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Chen R, Wang Z, Teng Q, Li C, Li J, Zeng L, Zhang R, Huang F, Lei L, Yuan F, Chen D. Binary Host-induced Exciplex Enabled High Color-Rendering Index of 94 for Carbon Quantum Dot-Based White Light-Emitting Diodes. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2404485. [PMID: 38872266 PMCID: PMC11321674 DOI: 10.1002/advs.202404485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2024] [Revised: 05/25/2024] [Indexed: 06/15/2024]
Abstract
White light-emitting diodes (WLEDs) with high color-rendering index (CRI, >90) are important for backlight displays and solid-state lighting applications. Although the well-developed colloidal quantum dots (QDs) based on heavy metals such as cadmium and lead are promising candidates for WLEDs, the low CRI still remains a significant limitation. In addition, the severe toxicity of heavy metals greatly limits their widespread use. Herein, the study demonstrates low-cost and environmentally friendly carbon quantum dots (CQDs)-based WLEDs that exhibit a high CRI of 94.33, surpassing that of conventional cadmium/lead-containing QD-based WLEDs. This achievement is attained through the employment of a binary host-induced exciplex strategy. The high hole/electron mobility and suitable energy levels of the donor and acceptor give rise to a broadband orange-yellow emission stemming from the exciplex. As the host, the binary exciplex is capable of contributing blue and orange-yellow emission components while efficiently mitigating the aggregation-induced quenching of CQDs. Meanwhile, CQDs effectively address the deep-red emission gap, enabling the realization of CQDs-based WLEDs with high CRI. These WLEDs also exhibit a remarkably low turn-on voltage of 2.8 V, a maximum luminance exceeding 2000 cd m- 2, a correlated color temperature of 4976 K, and Commission Internationale de l'Eclairage coordinates of (0.34, 0.32).
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Affiliation(s)
- Renjing Chen
- College of Physics and EnergyFujian Normal UniversityFujian Provincial Key Laboratory of Quantum Manipulation and New Energy MaterialsFuzhou350117P. R. China
| | - Zhibin Wang
- College of Physics and EnergyFujian Normal UniversityFujian Provincial Key Laboratory of Quantum Manipulation and New Energy MaterialsFuzhou350117P. R. China
| | - Qian Teng
- Key Laboratory of Theoretical & Computational Photochemistry of Ministry of EducationCollege of ChemistryBeijing Normal UniversityBeijing100875P. R. China
| | - Chenhao Li
- Key Laboratory of Theoretical & Computational Photochemistry of Ministry of EducationCollege of ChemistryBeijing Normal UniversityBeijing100875P. R. China
| | - Jinsui Li
- Key Laboratory of Theoretical & Computational Photochemistry of Ministry of EducationCollege of ChemistryBeijing Normal UniversityBeijing100875P. R. China
| | - Lingwei Zeng
- School of Chemistry and Chemical EngineeringHunan University of Science and TechnologyXiangtan411201P. R. China
| | - Ruidan Zhang
- College of Physics and EnergyFujian Normal UniversityFujian Provincial Key Laboratory of Quantum Manipulation and New Energy MaterialsFuzhou350117P. R. China
| | - Feng Huang
- College of Physics and EnergyFujian Normal UniversityFujian Provincial Key Laboratory of Quantum Manipulation and New Energy MaterialsFuzhou350117P. R. China
| | - Lei Lei
- Institute of Optoelectronic Materials and DevicesChina Jiliang UniversityHangzhou310018P. R. China
| | - Fanglong Yuan
- Key Laboratory of Theoretical & Computational Photochemistry of Ministry of EducationCollege of ChemistryBeijing Normal UniversityBeijing100875P. R. China
| | - Daqin Chen
- College of Physics and EnergyFujian Normal UniversityFujian Provincial Key Laboratory of Quantum Manipulation and New Energy MaterialsFuzhou350117P. R. China
- Fujian Provincial Collaborative Innovation Center for Advanced High‐Field Superconducting Materials and EngineeringFuzhou350117P. R. China
- Fujian Provincial Engineering Technology Research Center of Solar Energy Conversion and Energy StorageFuzhou350117P. R. China
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Bhowmick S, Mukherjee J, Ghosal M, Nayak C, Satpati B, Pramanik G, Karmakar P. Green to deep-red emissive carbon dot formation by C +ion implantation on nitrogen beam created self-masked nano-template. NANOTECHNOLOGY 2024; 35:125301. [PMID: 38086069 DOI: 10.1088/1361-6528/ad14b1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Accepted: 12/12/2023] [Indexed: 01/05/2024]
Abstract
We report the formation of green to red emissive arrays of carbon dot on silicon-nitride nano-templates by successive implantation of nitrogen and carbon broad ion beams. The patterned nano-templates are formed by 14 keV N2+ion-bombardment at grazing incident (70°) on Si. Subsequently, 5 keV C+ions are implanted at the selective sites of the pyramidal nano-template by taking advantage of the self-masking effect. The nano-pyramidal pattern and the implanted carbon dots at the specific sites are confirmed by atomic force microscopy and cross sectional transmission electron microscopy measurements. The developed carbon dots (CDs) are mostly amorphous and consists of SiC and graphitic nitrogen (CN). G-band and D-band carbons are identified by Raman spectroscopy, while the presence of SiC and CN are detected by XPS measurements. A change of band-gap is observed for C-implanted templates by the UV-vis spectroscopy. Excitation wavelength-dependent photoemission from the dots is found in the green to red region. Maximum intense PL is observed in the green-orange region for excitation wavelength of 425 nm and a redshift of PL with decreasing intensity is observed with the increase of excitation wavelength. The observed photoluminescence is described in terms of the combined effects of quantum confinement, graphitic nitrogen and defect induced additional states formation in the carbon dots. The potential applications of CDs are also addressed.
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Affiliation(s)
- Sudip Bhowmick
- Ion Beam Development and Application Section, RIBF Group, Variable Energy Cyclotron Centre, HBNI, 1/AF, Bidhannagar, Kolkata, 700064, India
| | - Joy Mukherjee
- Ion Beam Development and Application Section, RIBF Group, Variable Energy Cyclotron Centre, HBNI, 1/AF, Bidhannagar, Kolkata, 700064, India
| | - Manorama Ghosal
- Saha Institute of Nuclear Physics, HBNI, 1/AF, Bidhannagar, Kolkata, 700064, India
| | - Chumki Nayak
- J. C. Bose Institute, Acharya Prafulla Chandra Road, Kolkata, 700009, India
| | - Biswarup Satpati
- Saha Institute of Nuclear Physics, HBNI, 1/AF, Bidhannagar, Kolkata, 700064, India
| | - Goutam Pramanik
- UGC-DAE Consortium for Scientific Research, Kolkata Centre, LB-8, Bidhannagar, Kolkata, 700106, India
| | - Prasanta Karmakar
- Ion Beam Development and Application Section, RIBF Group, Variable Energy Cyclotron Centre, HBNI, 1/AF, Bidhannagar, Kolkata, 700064, India
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Shaik MAS, Samanta D, Sharma AK, Shaw M, Prodhan S, Basu R, Mondal I, Singh S, Dutta PK, Pathak A. White light emission from helically stacked humin-mimic based H-aggregates in heteroatom free carbon dots. NANOSCALE 2023; 15:19238-19254. [PMID: 37990573 DOI: 10.1039/d3nr04802k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2023]
Abstract
White light emission (WLE), particularly from heteroatom free carbon dots (CDs), is unusual. Besides, deciphering the origin of WLE from a H-aggregated molecular fluorophore in such kinds of CDs is a challenging task due to their non-fluorescent character resulting from a forbidden transition from a lower-energy excitonic state. Therefore, rigorous investigation on their elusive excited state photophysical properties along with their steady-state optical phenomena has to be carried out to shed light on the nature of distinct emissive states formed in the CDs. Herein, for the first time, we report WLE from imperfect H-aggregates of co-facially π-π stacked humin-like structures comprising furfural monomer units as a unique molecular fluorophore in CDs, as revealed from combined spectroscopic and microscopic studies, synthesized through hydrothermal treatment of the single precursor, dextrose. H-aggregates in CDs show a broad range of excitation-dependent emission spectra with color coordinates close to pure white light, i.e., CIE (0.35, 0.37) and a color temperature of 6000 K. Imperfect orientation between the transition dipole moments of adjacent monomer units in the H-aggregate's molecular arrangement is expected to cause ground state symmetry breaking, as confirmed by Circular Dichroism (CD) studies, which established helically stacked nature in molecular aggregates and produced significant oscillatory strength at lower energy excitonic states to enable fluorescence. TRES and TAS investigations have been performed to minimise the intricacies associated with excited state photophysics, which is regarded as an essential step in gaining a grasp on emissive states. Based on the observation of two isoemissive spots in the time-resolved area normalized emission spectra (TRANES), the existence of three oligomeric species in the excited state equilibrium of the pure/hybrid H-aggregates has been established. The exciton dynamics through electron relaxation from the higher to the lower excitonic states, charge transfer (CT) states, and surface trap mediated emission in excimer states of H-aggregates have also been endorsed as three distinct emissive states from femtosecond transient absorption spectroscopy (TAS) studies corroborating with their steady-state absorption and emission behavior. The results would demonstrate the usage of CDs as a cutting-edge fluorescent material for creating aggregate-induced white light emission.
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Affiliation(s)
- Md Abdus Salam Shaik
- Department of Chemistry, Indian Institute of Technology Kharagpur, West Bengal, 721302, India.
| | - Dipanjan Samanta
- Department of Chemistry, Indian Institute of Technology Kharagpur, West Bengal, 721302, India.
| | - Ankit Kumar Sharma
- Department of Chemistry, Indian Institute of Technology Kharagpur, West Bengal, 721302, India.
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur, West Bengal 741246, India
| | - Manisha Shaw
- Department of Chemistry, Indian Institute of Technology Kharagpur, West Bengal, 721302, India.
| | - Sayan Prodhan
- Department of Physics, Indian Institute of Technology Kharagpur, West Bengal, 721302, India
| | - Rajarshi Basu
- Department of Chemistry, Indian Institute of Technology Kharagpur, West Bengal, 721302, India.
| | - Imran Mondal
- Department of Chemistry, Indian Institute of Technology Kharagpur, West Bengal, 721302, India.
| | - Shailab Singh
- Department of Physics, Indian Institute of Technology Kharagpur, West Bengal, 721302, India
| | - Prasanta Kumar Dutta
- Department of Physics, Indian Institute of Technology Kharagpur, West Bengal, 721302, India
| | - Amita Pathak
- Department of Chemistry, Indian Institute of Technology Kharagpur, West Bengal, 721302, India.
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Benkowska-Biernacka D, Mucha SG, Firlej L, Formalik F, Bantignies JL, Anglaret E, Samoć M, Matczyszyn K. Strongly Emitting Folic Acid-Derived Carbon Nanodots for One- and Two-Photon Imaging of Lyotropic Myelin Figures. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 37366586 DOI: 10.1021/acsami.3c05656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/28/2023]
Abstract
Non-invasive imaging of morphological changes in biologically relevant lipidic mesophases is essential for the understanding of membrane-mediated processes. However, its methodological aspects need to be further explored, with particular attention paid to the design of new excellent fluorescent probes. Here, we have demonstrated that bright and biocompatible folic acid-derived carbon nanodots (FA CNDs) may be successfully applied as fluorescent markers in one- and two-photon imaging of bioinspired myelin figures (MFs). Structural and optical properties of these new FA CNDs were first extensively characterized; they revealed remarkable fluorescence performance in linear and non-linear excitation regimes, justifying further applications. Then, confocal fluorescence microscopy and two-photon excited fluorescence microscopy were used to investigate a three-dimensional distribution of FA CNDs within the phospholipid-based MFs. Our results showed that FA CNDs are effective markers for imaging various forms and parts of multilamellar microstructures.
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Affiliation(s)
- Dominika Benkowska-Biernacka
- Institute of Advanced Materials, Faculty of Chemistry, Wroclaw University of Science and Technology, 50-370 Wroclaw, Poland
| | - Sebastian G Mucha
- Laboratoire Charles Coulomb (L2C), UMR5221, Université de Montpellier (CNRS), 34095 Montpellier, France
| | - Lucyna Firlej
- Laboratoire Charles Coulomb (L2C), UMR5221, Université de Montpellier (CNRS), 34095 Montpellier, France
- Department of Physics and Astronomy, University of Missouri, Columbia, Missouri 65211, United States
| | - Filip Formalik
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, United States
- Department of Micro, Nano, and Bioprocess Engineering, Faculty of Chemistry, Wroclaw University of Science and Technology, 50-370 Wroclaw, Poland
| | - Jean-Louis Bantignies
- Laboratoire Charles Coulomb (L2C), UMR5221, Université de Montpellier (CNRS), 34095 Montpellier, France
| | - Eric Anglaret
- Laboratoire Charles Coulomb (L2C), UMR5221, Université de Montpellier (CNRS), 34095 Montpellier, France
| | - Marek Samoć
- Institute of Advanced Materials, Faculty of Chemistry, Wroclaw University of Science and Technology, 50-370 Wroclaw, Poland
| | - Katarzyna Matczyszyn
- Institute of Advanced Materials, Faculty of Chemistry, Wroclaw University of Science and Technology, 50-370 Wroclaw, Poland
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5
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Sarkar AN, Padhi S, Kumari S, Jagadevan S, Pal S. Facile Synthesis of Carbon Dot Deposited γ-FeOOH Nanosheet/Polypyrrole Composite: A Robust Photocatalyst for Degradation of Antibiotics under Sunlight Irradiation with Enhanced Antibacterial Activity. Ind Eng Chem Res 2023. [DOI: 10.1021/acs.iecr.2c03172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Abanindra Nath Sarkar
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (ISM), Dhanbad826004, India
| | - Satyajeet Padhi
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (ISM), Dhanbad826004, India
| | - Soni Kumari
- Department of Environmental Science and Engineering, Indian Institute of Technology (ISM), Dhanbad826004, India
| | - Sheeja Jagadevan
- Department of Environmental Science and Engineering, Indian Institute of Technology (ISM), Dhanbad826004, India
| | - Sagar Pal
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (ISM), Dhanbad826004, India
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Li N, Wu S, Luo D, Liang G, Xiao Y, Xu L, Wang R, Xiao Y, He P. A robust, stretchable, transparent, solvent‐resistant, and fluorescent composite: Anchoring carbon dots in polyurethane to obtain new photoluminescent emissions. POLYM ADVAN TECHNOL 2022. [DOI: 10.1002/pat.5787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Na Li
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province College of Chemistry and Chemical Engineering, China West Normal University Nanchong China
| | - Sha Wu
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province College of Chemistry and Chemical Engineering, China West Normal University Nanchong China
| | - Dan Luo
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province College of Chemistry and Chemical Engineering, China West Normal University Nanchong China
| | - Guangming Liang
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province College of Chemistry and Chemical Engineering, China West Normal University Nanchong China
| | - Yulong Xiao
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province College of Chemistry and Chemical Engineering, China West Normal University Nanchong China
| | - Lei Xu
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province College of Chemistry and Chemical Engineering, China West Normal University Nanchong China
| | - Rui Wang
- Chongqing Collaborative Innovation Center for Functional Food Chongqing University of Education Chongqing China
| | - Yao Xiao
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province College of Chemistry and Chemical Engineering, China West Normal University Nanchong China
| | - Ping He
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province College of Chemistry and Chemical Engineering, China West Normal University Nanchong China
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7
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Chen Y, Xiong G, Zhu L, Huang J, Chen X, Chen Y, Cao M. Enhanced Fluorescence and Environmental Stability of Red-Emissive Carbon Dots via Chemical Bonding with Cellulose Films. ACS OMEGA 2022; 7:6834-6842. [PMID: 35252677 PMCID: PMC8892658 DOI: 10.1021/acsomega.1c06426] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 02/08/2022] [Indexed: 05/16/2023]
Abstract
The development of red emission carbon dots with bright solid-state fluorescence would significantly broaden their application in optoelectronic devices and sensors. Herein, a red-emissive carbon dot-based nanocomposite has been synthesized through chemical bonding with cellulose films. The red emission originating from the surface states of carbon dots was maintained in the cellulose films. Due to the stable chemical bonding, the photoluminescence intensity and emission wavelength remained unchanged for 12 months, and the quantum yield of the composite was enhanced over 4 times. It also showed outstanding stability in water or weak acid-base environments under pHs ranging from 2 to 11. Therefore, the mechanism of chemical bonding that eliminated the defects and preserved the efficient radiative process through surface states was proposed.
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Affiliation(s)
- Yeqing Chen
- School
of Applied Physics and Materials, Wuyi University, No. 22, Dongcheng Village, Jiangmen 529020, Guangdong, P. R. China
| | - Gaoyang Xiong
- School
of Applied Physics and Materials, Wuyi University, No. 22, Dongcheng Village, Jiangmen 529020, Guangdong, P. R. China
| | - Lina Zhu
- School
of Applied Physics and Materials, Wuyi University, No. 22, Dongcheng Village, Jiangmen 529020, Guangdong, P. R. China
| | - Jie Huang
- School
of Applied Physics and Materials, Wuyi University, No. 22, Dongcheng Village, Jiangmen 529020, Guangdong, P. R. China
| | - Xueying Chen
- School
of Applied Physics and Materials, Wuyi University, No. 22, Dongcheng Village, Jiangmen 529020, Guangdong, P. R. China
| | - Yan Chen
- School
of Applied Physics and Materials, Wuyi University, No. 22, Dongcheng Village, Jiangmen 529020, Guangdong, P. R. China
| | - Mingxuan Cao
- Faculty
of Intelligent Manufacturing, Wuyi University, No. 22, Dongcheng Village, Jiangmen 529020, Guangdong, P. R. China
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Wang Z, Jiang N, Liu M, Zhang R, Huang F, Chen D. Bright Electroluminescent White-Light-Emitting Diodes Based on Carbon Dots with Tunable Correlated Color Temperature Enabled by Aggregation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2104551. [PMID: 34729915 DOI: 10.1002/smll.202104551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 09/03/2021] [Indexed: 05/09/2023]
Abstract
Carbon dots (CDs) as one of the most promising carbon-based nanomaterials are inspiring extensive research in optoelectronic applications. White-light-emitting diodes (WLEDs) with tunable correlated color temperatures (CCTs) are crucial for applications in white lighting. However, the development of high-performance CDs-based electroluminescent WLEDs, especially those with adjustable CCTs, remains a challenge. Herein, white CDs-LEDs with CCTs from 2863 to 11 240 K are successfully demonstrated by utilizing aggregation-induced emission red-shifting and broadening of CDs. As a result, a series of warm white, pure white, and cold white CDs-LEDs are realized with adjustable emissions in sequence along the blackbody radiation curve. These CDs-LEDs reach maximum brightness and external quantum efficiency up to 1414-4917 cd m-2 and 0.08-0.87%, respectively, which is among the best performances of white CDs-LEDs. To the best of the authors' knowledge, this is the first time that CCT-tunable white electroluminescent CDs-LEDs are demonstrated through controlling the aggregation degrees of CDs.
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Affiliation(s)
- Zhibin Wang
- College of Physics and Energy, Fujian Normal University, Fujian Provincial Collaborative Innovation Center for Advanced High-Field Superconducting Materials and Engineering, Fuzhou, 350117, China
- College of Physics and Energy, Fujian Normal University, Fujian Provincial Engineering Technology Research Center of Solar Energy Conversion and Energy Storage, Fuzhou, 350117, China
| | - Naizhong Jiang
- College of Physics and Energy, Fujian Normal University, Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials, Fuzhou, 350117, China
| | - Menglong Liu
- College of Physics and Energy, Fujian Normal University, Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials, Fuzhou, 350117, China
| | - Ruidan Zhang
- College of Physics and Energy, Fujian Normal University, Fujian Provincial Collaborative Innovation Center for Advanced High-Field Superconducting Materials and Engineering, Fuzhou, 350117, China
- College of Physics and Energy, Fujian Normal University, Fujian Provincial Engineering Technology Research Center of Solar Energy Conversion and Energy Storage, Fuzhou, 350117, China
| | - Feng Huang
- College of Physics and Energy, Fujian Normal University, Fujian Provincial Collaborative Innovation Center for Advanced High-Field Superconducting Materials and Engineering, Fuzhou, 350117, China
- College of Physics and Energy, Fujian Normal University, Fujian Provincial Engineering Technology Research Center of Solar Energy Conversion and Energy Storage, Fuzhou, 350117, China
| | - Daqin Chen
- College of Physics and Energy, Fujian Normal University, Fujian Provincial Collaborative Innovation Center for Advanced High-Field Superconducting Materials and Engineering, Fuzhou, 350117, China
- College of Physics and Energy, Fujian Normal University, Fujian Provincial Engineering Technology Research Center of Solar Energy Conversion and Energy Storage, Fuzhou, 350117, China
- College of Physics and Energy, Fujian Normal University, Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials, Fuzhou, 350117, China
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Han C, Chen R, Wu X, Shi N, Duan T, Xu K, Huang T. Fluorescence turn-on immunosensing of HE4 biomarker and ovarian cancer cells based on target-triggered metal-enhanced fluorescence of carbon dots. Anal Chim Acta 2021; 1187:339160. [PMID: 34753571 DOI: 10.1016/j.aca.2021.339160] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 10/06/2021] [Accepted: 10/07/2021] [Indexed: 12/20/2022]
Abstract
Rapid and sensitive detection of tumor biomarkers and cancer cells is of crucial importance for the early diagnosis and prognosis prediction of cancer. The present report describes a target-induced fluorescence enhancement immunosensor that utilizes the optical property of carbon dots (CDs) and the metal-enhanced fluorescence effect (MEF) property of silver nanoparticles (AgNPs) for the sensitive detection of the cancer biomarker human epididymis protein 4 (HE4) and ovarian cancer cells. Nitrogen and sulfur co-doped CDs with a quantum yield of 85.6% were prepared and served as the fluorophore in MEF. The HE4 antibody (Ab) specific to the HE4 antigen was linked covalently to the surface of the synthesized CDs as the capture. The HE4 Ab-conjugated AgNPs (AgNPs-Ab) were prepared and utilized as signal amplification elements. In the presence of the target HE4, composite sandwich structures were formed between the labeled CDs-Ab and AgNPs-Ab, which brought the CDs and AgNPs into proximity, resulting in the fluorescence of CDs enhancement owing to MEF. The intensity of fluorescence enhancement was positively correlated with the HE4 concentration in the clinically important range of 0.01-200 nM with a limit detection of 2.3 pM. Moreover, the immunosensor was also successfully applied to specific fluorescence labeling and quantitative determination of HE4-positive ovarian cancer cells. The proposed target-triggered MEF sensor platform demonstrated high sensitivity, excellent anti-interference ability, along with successful validation in complex biological matrices, providing a new approach for HE4 detection in early diagnosis and therapeutic monitoring.
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Affiliation(s)
- Cuiping Han
- School of Medical Imaging, Xuzhou Medical University, Xuzhou, 221004, China; Department of Radiology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, 221004, China.
| | - Ruoyu Chen
- School of Medical Imaging, Xuzhou Medical University, Xuzhou, 221004, China
| | - Xueqing Wu
- School of Medical Imaging, Xuzhou Medical University, Xuzhou, 221004, China
| | - Nian Shi
- School of Medical Imaging, Xuzhou Medical University, Xuzhou, 221004, China
| | - Tengfei Duan
- School of Medical Imaging, Xuzhou Medical University, Xuzhou, 221004, China
| | - Kai Xu
- Department of Radiology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, 221004, China
| | - Tonghui Huang
- School of Pharmacy, Xuzhou Medical University, Xuzhou, 221004, China.
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Mohapatra D, Pratap R, Pandey V, Dubey PK, Agrawal AK, Parmar AS, Sahu AN. Tinospora cordifolia Leaves Derived Carbon dots for Cancer Cell Bioimaging, Free radical Scavenging, and Fe 3+ Sensing Applications. J Fluoresc 2021; 32:275-292. [PMID: 34773523 DOI: 10.1007/s10895-021-02846-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 10/26/2021] [Indexed: 11/29/2022]
Abstract
Herein, we report the fabrication of Tinospora cordifolia leaves-derived carbon dots (TCLCDs) from aqueous extract of leaves as carbon source via simple, environmentally friendly, hydrothermal carbonization (HTC) technique. The synthesized TCLCDs were characterized for their physicochemical properties and further explored for in-vitro cancer cell bioimaging, radical scavenging, and metal ion sensing. The synthesized TCLCDs showed excitation-dependent emission property with maximum emission at 435 nm under the excitation of 350 nm. The High-Resolution Transmission Electron Microscopy (HRTEM) results revealed a roughly spherical shape with an average diameter of 5.47 nm. The diffused ring pattern of Selected Area Electron Diffraction (SAED) and halo diffraction pattern of X-ray diffraction (XRD) disclosed their amorphous nature. The Energy Dispersive X-ray (EDX) showed the existence of C, N, and O. The Fourier-transform infrared spectroscopy (FTIR) revealed the presence of -OH, -NH, -CN, and -CH groups. The TCLCDs showed excellent cellular biocompatibility with dose-dependent bioimaging results in melanoma (B16F10) and cervical cancer (SiHa) cell lines. Also, they exhibited excellent scavenging of free radicals with an IC50 value of 0.524 mg/mL & selective Fe3+ ion sensing with a detection limit of 0.414 µM. Further, they exerted excellent bacterial biocompatibility, photostability, and thermal stability. The overall results reflected their potential for in-vitro cancer cell bioimaging, free radical scavenging, and selective Fe3+ ion sensing.
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Affiliation(s)
- Debadatta Mohapatra
- Phytomedicine Research Lab., Department of Pharmaceutical Engineering & Technology, IIT (BHU), Uttar Pradesh, Varanasi, 221005, India
| | - Ravi Pratap
- Department of Physics, IIT (BHU), Uttar Pradesh, Varanasi, 221005, India
| | - Vivek Pandey
- Centre for Genetics Disorders, Institute of Science, Banaras Hindu University, Uttar Pradesh, Varanasi, 221005, India
| | - Pawan K Dubey
- Centre for Genetics Disorders, Institute of Science, Banaras Hindu University, Uttar Pradesh, Varanasi, 221005, India
| | - Ashish K Agrawal
- Phytomedicine Research Lab., Department of Pharmaceutical Engineering & Technology, IIT (BHU), Uttar Pradesh, Varanasi, 221005, India
| | - Avanish S Parmar
- Department of Physics, IIT (BHU), Uttar Pradesh, Varanasi, 221005, India
| | - Alakh N Sahu
- Phytomedicine Research Lab., Department of Pharmaceutical Engineering & Technology, IIT (BHU), Uttar Pradesh, Varanasi, 221005, India.
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11
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Zuo Y, Gou Z, Quan W, Lin W. Silicon-assisted unconventional fluorescence from organosilicon materials. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.213887] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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12
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Yang Q, Zhu JC, Li ZX, Chen XS, Jiang YX, Luo ZW, Wang P, Xie HL. Luminescent Liquid Crystals Based on Carbonized Polymer Dots and Their Polarized Luminescence Application. ACS APPLIED MATERIALS & INTERFACES 2021; 13:26522-26532. [PMID: 34057832 DOI: 10.1021/acsami.1c08641] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Traditional luminescent liquid crystals (LLCs) suffer from fluorescence quenching caused by aggregation, which greatly limits their further application. In this work, a kind of novel LLCs (named carbonized polymer dot liquid crystals (CPD-LCs)) are designed and successfully synthesized through grafting the rod-shaped liquid crystal (LC) molecules of 4'-cyano-4-(4″-bromohexyloxy) biphenyl on the surface of CPDs. The peripheral LC molecules not only increase the distance between different CPDs to prevent them from aggregating and reduce intermolecular energy resonance transfer but also make this LLC have an ordered arrangement. Thus, the obtained CPD-LCs show good LC property and excellent high luminous efficiency with an absolute photoluminescence quantum yield of 14.52% in the aggregated state. Furthermore, this kind of CPD-LC is used to fabricate linearly polarized devices. The resultant linearly polarized dichroic ratio (N) and polarization ratio (ρ) are 2.59 and 0.44, respectively. Clearly, this type of CPD-LC shows promising applications for optical devices.
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Affiliation(s)
- Qian Yang
- Key Lab of Environment-friendly Chemistry and Application in Ministry of Education, and Key Laboratory of Advanced Functional Polymer Materials of Colleges, Universities of Hunan Province and College of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, China
| | - Ji-Chun Zhu
- Key Lab of Environment-friendly Chemistry and Application in Ministry of Education, and Key Laboratory of Advanced Functional Polymer Materials of Colleges, Universities of Hunan Province and College of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, China
| | - Zhen-Xing Li
- Key Lab of Environment-friendly Chemistry and Application in Ministry of Education, and Key Laboratory of Advanced Functional Polymer Materials of Colleges, Universities of Hunan Province and College of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, China
| | - Xiao-Shuai Chen
- Key Lab of Environment-friendly Chemistry and Application in Ministry of Education, and Key Laboratory of Advanced Functional Polymer Materials of Colleges, Universities of Hunan Province and College of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, China
| | - Yu-Xing Jiang
- Key Lab of Environment-friendly Chemistry and Application in Ministry of Education, and Key Laboratory of Advanced Functional Polymer Materials of Colleges, Universities of Hunan Province and College of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, China
| | - Zhi-Wang Luo
- Key Lab of Environment-friendly Chemistry and Application in Ministry of Education, and Key Laboratory of Advanced Functional Polymer Materials of Colleges, Universities of Hunan Province and College of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, China
| | - Ping Wang
- Key Lab of Environment-friendly Chemistry and Application in Ministry of Education, and Key Laboratory of Advanced Functional Polymer Materials of Colleges, Universities of Hunan Province and College of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, China
| | - He-Lou Xie
- Key Lab of Environment-friendly Chemistry and Application in Ministry of Education, and Key Laboratory of Advanced Functional Polymer Materials of Colleges, Universities of Hunan Province and College of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, China
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13
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Langmuir and Langmuir Blodgett films of zinc oxide (ZnO) nanocrystals coated with polyhedral oligomeric silsesquioxanes (POSS). J Colloid Interface Sci 2021; 600:784-793. [PMID: 34051466 DOI: 10.1016/j.jcis.2021.05.085] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 05/03/2021] [Accepted: 05/15/2021] [Indexed: 11/22/2022]
Abstract
HYPOTHESIS The type and properties of ligands capping nanoparticles affect the characteristics of corresponding Langmuir and Langmuir-Blodgett films. When ligands are firmly anchored to the surface, as in zinc oxide nanocrystallites (ZnO NCs), compression at the air/water interface might cause ligands interdigitation and then the formation of supra-structures. Here, we evaluate how the introduction of bulky ligands, namely polyhedral oligomeric silsesquioxanes (POSSs), influences the self-assembly of POSS@ZnO NCs and the properties of corresponding thin films. EXPERIMENTS ZnO NCs capped with asymmetrical POSS derivatives are prepared via a one-pot two-step self-supporting organometallic (OSSOM) method. POSS@ZnO NCs are characterized by employing STEM, DLS, TGA, NMR, IR, UV-VIS, and photoluminescence spectroscopy. Changes in surface pressure, surface potential, and morphology (using BAM) are recorded upon compression at the air/water interface. Films transferred onto solid substrates are examined utilizing XRR and AFM. FINDINGS All studied POSS@ZnO NCs form stable Langmuir films. POSSs prevent the interdigitation of ligands capping neighboring NCs. Thus, POSS@ZnO NCs films resemble those composed of classical amphiphiles but without any visible structural source of amphiphilicity. We suggest that the core provides enough hydrophilicity to anchor NCs at the air/water interface. POSS ligands provide enough hydrophobicity for the NCs not to disperse into the subphase upon compression.
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Kalytchuk S, Zdražil L, Bad'ura Z, Medved' M, Langer M, Paloncýová M, Zoppellaro G, Kershaw SV, Rogach AL, Otyepka M, Zbořil R. Carbon Dots Detect Water-to-Ice Phase Transition and Act as Alcohol Sensors via Fluorescence Turn-Off/On Mechanism. ACS NANO 2021; 15:6582-6593. [PMID: 33724779 DOI: 10.1021/acsnano.0c09781] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Highly fluorescent carbon nanoparticles called carbon dots (CDs) have been the focus of intense research due to their simple chemical synthesis, nontoxic nature, and broad application potential including optoelectronics, photocatalysis, biomedicine, and energy-related technologies. Although a detailed elucidation of the mechanism of their photoluminescence (PL) remains an unmet challenge, the CDs exhibit robust, reproducible, and environment-sensitive PL signals, enabling us to monitor selected chemical phenomena including phase transitions or detection of ultralow concentrations of molecular species in solution. Herein, we report the PL turn-off/on behavior of aqueous CDs allowing the reversible monitoring of the water-ice phase transition. The bright PL attributable to molecular fluorophores present on the CD surface was quenched by changing the liquid aqueous environment to solid phase (ice). Based on light-induced electron paramagnetic resonance (LEPR) measurements and density functional theory (DFT) calculations, the proposed kinetic model assuming the presence of charge-separated trap states rationalized the observed sensitivity of PL lifetimes to the environment. Importantly, the PL quenching induced by freezing could be suppressed by adding a small amount of alcohols. This was attributed to a high tendency of alcohol to increase its concentration at the CD/solvent interface, as revealed by all-atom molecular dynamics simulations. Based on this behavior, a fluorescence "turn-on" alcohol sensor for exhaled breath condensate (EBC) analysis has been developed. This provided an easy method to detect alcohols among other common interferents in EBC with a low detection limit (100 ppm), which has a potential to become an inexpensive and noninvasive clinically useful diagnostic tool for early stage lung cancer screening.
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Affiliation(s)
- Sergii Kalytchuk
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacký University Olomouc, Šlechtitelů 27, Olomouc 783 71, Czech Republic
| | - Lukáš Zdražil
- Regional Centre of Advanced Technologies and Materials, Faculty of Science, Palacký University Olomouc, Šlechtitelů 27, Olomouc 783 71, Czech Republic
- Department of Physical Chemistry, Faculty of Science, Palacký University Olomouc, 17. listopadu 12, Olomouc 771 46, Czech Republic
| | - Zdeněk Bad'ura
- Regional Centre of Advanced Technologies and Materials, Faculty of Science, Palacký University Olomouc, Šlechtitelů 27, Olomouc 783 71, Czech Republic
- Department of Experimental Physics, Faculty of Science, Palacký University Olomouc, 17. listopadu 12, Olomouc 786 41, Czech Republic
| | - Miroslav Medved'
- Regional Centre of Advanced Technologies and Materials, Faculty of Science, Palacký University Olomouc, Šlechtitelů 27, Olomouc 783 71, Czech Republic
| | - Michal Langer
- Regional Centre of Advanced Technologies and Materials, Faculty of Science, Palacký University Olomouc, Šlechtitelů 27, Olomouc 783 71, Czech Republic
- Department of Physical Chemistry, Faculty of Science, Palacký University Olomouc, 17. listopadu 12, Olomouc 771 46, Czech Republic
| | - Markéta Paloncýová
- Regional Centre of Advanced Technologies and Materials, Faculty of Science, Palacký University Olomouc, Šlechtitelů 27, Olomouc 783 71, Czech Republic
| | - Giorgio Zoppellaro
- Regional Centre of Advanced Technologies and Materials, Faculty of Science, Palacký University Olomouc, Šlechtitelů 27, Olomouc 783 71, Czech Republic
| | - Stephen V Kershaw
- Department of Materials Science and Engineering, and Center for Functional Photonics (CFP), City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong S.A.R., China
| | - Andrey L Rogach
- Department of Materials Science and Engineering, and Center for Functional Photonics (CFP), City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong S.A.R., China
| | - Michal Otyepka
- Regional Centre of Advanced Technologies and Materials, Faculty of Science, Palacký University Olomouc, Šlechtitelů 27, Olomouc 783 71, Czech Republic
| | - Radek Zbořil
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacký University Olomouc, Šlechtitelů 27, Olomouc 783 71, Czech Republic
- Nanotechnology Centre, VŠB-Technical University of Ostrava, 17. listopadu 2172/15, Ostrava-Poruba 708 00, Czech Republic
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15
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Ma Y, Zhang N, Yang L. Long-wavelength emissive solid-state carbon dots in nanoporous glass with excellent thermal stability. J Colloid Interface Sci 2021; 599:686-693. [PMID: 33984762 DOI: 10.1016/j.jcis.2021.04.060] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 04/04/2021] [Accepted: 04/12/2021] [Indexed: 01/19/2023]
Abstract
Fluorescent solid-state carbon dots have drawn significant attention because of their intriguing optical properties, e.g., broad absorption, stable fluorescence, etc. However, obtaining the fluorescent solid-state carbon dots with a long-wavelength emission is still a challenging problem due to the notorious aggregation-induced quenching problem. In this paper, a technically feasible and low-cost approach for preparing fluorescent solid-state carbon dots is presented. The carbon dots are encapsulated in the nanoporous glass using the solution-phase-doping method. The size of nanoporous glass is tuned to 4.95 nm by regulating the ratio of boron to silicon to match the prepared CDs. Owing to the physical isolation and chemical connection of the -C-O-Si functional groups, the CDs are dispersed uniformly into the nanochannels of nanoporous glass. In this way, the aggregation-induced quenching problem of carbon dots is solved. The experiment results show that the photoluminescence has the excitation-independent emission at 609 nm, i.e., the prepared solid-state carbon dots are with orange fluorescence. More importantly, the solid-state carbon dots preserve orange fluorescence after heating treatment (400 °C) in the ambient atmosphere.
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Affiliation(s)
- Yunxiu Ma
- School of Materials Science and Engineering, State Key Laboratory of Material Processing & Die and Mould Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Ning Zhang
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Luyun Yang
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China.
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16
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Liu Y, Liu B, Huang P, Wu FY, Ma L. Concentration-dependent photoluminescence carbon dots for visual recognition and detection of three tetracyclines. Anal Bioanal Chem 2021; 413:2565-2575. [PMID: 33651120 DOI: 10.1007/s00216-021-03221-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Accepted: 02/03/2021] [Indexed: 10/22/2022]
Abstract
Concentration-dependent photoluminescence carbon dots (CDs) have been successfully synthesized through the one-step hydrothermal treatment of o-phthalic acid and ethylenediamine. The CDs possessed higher fluorescence quantum yield, up to 39.22%, exhibiting distinguished optical property, water solubility, and stability. The CDs that emit strong blue-green fluorescence can visually identify and determine tetracycline (TC), oxytetracycline (OTC), and chlortetracycline (CTC). TC quenched the fluorescence of CDs at 500 nm owing to the inner filter effect; OTC behaved similarly, but the emission wavelength of CDs was red-shifted to 515 nm. Inversely, once CTC was introduced to CDs solution, the fluorescence increased and the emission peak was blue-shifted to 450 nm. Bandgap transition and electrostatic interaction were proposed to be the mechanisms for the detection of OTC and CTC by CDs. Wide linear relationships were established for TC, OTC, and CTC with the limits of detection to be 50 nM, 36 nM, and 373 nM, respectively. Furthermore, the nanoscale probe constructed by this system has been applied to detect tetracyclines (TCs) in complex samples with satisfying recoveries (93.2-114%) and was designed as a portable test strip sensor for visually on-site TCs of honey sample screening. Accordingly, the preparation process of the nano fluorescent probe is simple and environmentally friendly, and the probe has a specific recognition ability for tetracyclines. The synthesized CDs in this work provide a new orientation for fast, effective, and visual real-time detection of tetracycline in actual samples.
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Affiliation(s)
- Ying Liu
- College of Chemistry, Nanchang University, Nanchang, 330031, Jiangxi, China
| | - Bowen Liu
- College of Chemistry, Nanchang University, Nanchang, 330031, Jiangxi, China
| | - Pengcheng Huang
- College of Chemistry, Nanchang University, Nanchang, 330031, Jiangxi, China. .,Jiangxi Province Key Laboratory of Modern Analytical Science, Nanchang University, Nanchang, 330031, Jiangxi, China.
| | - Fang-Ying Wu
- College of Chemistry, Nanchang University, Nanchang, 330031, Jiangxi, China. .,Jiangxi Province Key Laboratory of Modern Analytical Science, Nanchang University, Nanchang, 330031, Jiangxi, China.
| | - Lihua Ma
- College of Science and Engineering, University of Houston at Clear Lake, 2700 Bay Area Blvd, Houston, TX, 77058, USA.
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17
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Bahari D, Babamiri B, Salimi A, Salimizand H. Ratiometric fluorescence resonance energy transfer aptasensor for highly sensitive and selective detection of Acinetobacter baumannii bacteria in urine sample using carbon dots as optical nanoprobes. Talanta 2020; 221:121619. [PMID: 33076147 DOI: 10.1016/j.talanta.2020.121619] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 08/28/2020] [Accepted: 08/31/2020] [Indexed: 11/20/2022]
Abstract
Development of sensitive and selective analytical method for accurate diagnosis of Acinetobacter baumannii (Ab) bacteria in biological samples is a challenge. Herein, we developed an ingenious ratiometric fluorescent aptasensor for sensitive and selective detection of (Ab) bacteria based on fluorescence resonance energy transfer (FRET) between ortho-phenylenediamines carbon dot (o-CD), nitrogen-doped carbon nanodots (NCND) as donor's species and graphene oxide (GO) as acceptor. NCND that assembled onto the edge of graphene oxide (GO) exhibited quenched photoluminescence emission, and with the absorption of the modified o-CD with aptamer (o-CD-ssDNA) onto the graphene oxide surface the fluorescence of o-CD was efficiently quenched. The aptamer (ssDNA) as a biorecognition element is bound with A. baumannii specifically which releases the o-CD-ssDNA from GO and the recovery of the fluorescence signal of o-CD, while the fluorescence intensity of NCND only slightly altered and acted as the reference signal in ratiometric fluorescence assay. The fluorescence intensity ratio (I550 nm/I440nm) varied from 2.0 to 10.0 with the concentration of bacteria changing from 2.0 × 103 to 4.5 × 107 cfu/mL and the low detection limit of 3.0 × 102 cfu/mL (S/N = 3). The feasibility of the developed aptasensor for selective detection of A. baumannii in urine sample with satisfactory results was also demonstrated.
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Affiliation(s)
- Delnia Bahari
- Department of Chemistry, University of Kurdistan, 66177-15175, Sanandaj, Iran
| | - Bahareh Babamiri
- Department of Chemistry, University of Kurdistan, 66177-15175, Sanandaj, Iran
| | - Abdollah Salimi
- Department of Chemistry, University of Kurdistan, 66177-15175, Sanandaj, Iran; Research Center for Nanotechnology, University of Kurdistan, 66177-15175, Sanandaj, Iran.
| | - Himen Salimizand
- Department of Microbiology, Kurdistan University of Medical Sciences, 66177-13446, Sanandaj, Iran
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18
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Wang L, Wang Y, Wang H, Xu G, Döring A, Daoud WA, Xu J, Rogach AL, Xi Y, Zi Y. Carbon Dot-Based Composite Films for Simultaneously Harvesting Raindrop Energy and Boosting Solar Energy Conversion Efficiency in Hybrid Cells. ACS NANO 2020; 14:10359-10369. [PMID: 32686934 DOI: 10.1021/acsnano.0c03986] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Energy harvesting has drawn worldwide attention as a sustainable technology, while combining several approaches in a single device to maximize the overall energy output holds great promise to offer valuable technologies able to alleviate the energy crisis. Here, we present a hybrid cell composed of a silicon solar cell and a water-droplet-harvesting triboelectric nanogenerator (WH-TENG) with the capacity of harvesting both solar and raindrop energies. A transparent and solution processable carbon dot-based composite film is introduced as a dual-functional layer, acting as the transmittance enhancement layer of the solar cell as well as an ionic conductor of the WH-TENG. At an optimal loading of carbon dots in the composite, the significant enhancement of transmittance in visible spectral range increases the short-circuit current density of the solar cell, which results in an increase of its power conversion efficiency from 13.6% to 14.6%. In addition, the transparent WH-TENG consisting of fluorinated ethylene propylene as a triboelectrification layer can generate a maximum power of 13.9 μW by collecting raindrop energy. This study provides a promising strategy to boost the energy conversion through multiple sources with the aid of a dual-functional layer for enhancing solar cell performance as well as harvesting raindrop energy.
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Affiliation(s)
- Lingyun Wang
- Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Yu Wang
- Department of Materials Science and Engineering and Centre for Functional Photonics (CFP), City University of Hong Kong, Kowloon, Hong Kong SAR, China
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Han Wang
- Department of Electronic Engineering, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Guoqiang Xu
- Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Aaron Döring
- Department of Materials Science and Engineering and Centre for Functional Photonics (CFP), City University of Hong Kong, Kowloon, Hong Kong SAR, China
| | - Walid A Daoud
- School of Energy and Environment, City University of Hong Kong, Kowloon, Hong Kong SAR, China
| | - Jianbin Xu
- Department of Electronic Engineering, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Andrey L Rogach
- Department of Materials Science and Engineering and Centre for Functional Photonics (CFP), City University of Hong Kong, Kowloon, Hong Kong SAR, China
- Shenzhen Research Institute, City University of Hong Kong, Shenzhen 518057, China
| | - Yi Xi
- College of Physics, Chongqing University, Chongqing 401331, China
| | - Yunlong Zi
- Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
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Feng T, Tao S, Yue D, Zeng Q, Chen W, Yang B. Recent Advances in Energy Conversion Applications of Carbon Dots: From Optoelectronic Devices to Electrocatalysis. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2001295. [PMID: 32529773 DOI: 10.1002/smll.202001295] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 05/06/2020] [Indexed: 05/19/2023]
Abstract
Exploitation and utilization of sustainable energy sources has increasingly become the common theme of global social development, which has promoted tremendous development of energy conversion devices/technologies. Owing to excellent and unique optical/electrical properties, carbon dots (CDs) have attracted extensive research interest for numerous energy conversion applications. Strong absorption, downconversion photoluminescence, electron acceptor/donor characteristics, and excellent electron conductivity endow CDs with enormous potential for applications in optoelectronic devices. Furthermore, excellent electron transfers/transport capacities and easily manipulable structural defects of CDs offer distinct advantages for electrocatalytic applications. Recent advances in CD-based energy conversion applications, including optoelectronic devices such as light-emitting diodes and solar cells, and electrocatalytic reactions including the hydrogen evolution reaction, oxygen evolution reaction, oxygen reduction reaction, and carbon dioxide reduction reaction, are summarized. Finally, current challenges and future prospects for CD-based energy conversion applications are proposed, highlighting the importance of controllable structural design and modifications.
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Affiliation(s)
- Tanglue Feng
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, China
| | - Songyuan Tao
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, China
| | - Da Yue
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, China
| | - Qingsen Zeng
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, China
| | - Weihua Chen
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, University of Science and Technology of China, Changchun, 130022, China
| | - Bai Yang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, China
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20
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Zhang K, Shi Y, Jia Y, Li P, Zhang X, Feng X, Zhu L, Sun Y, Hu W, Zhao G. Tunable dual fluorescence emissions with high photoluminescence quantum yields modulated by Na ion dispersion method for purely solid state N-doped carbon dots. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112548] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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21
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Kumar R, Kumar VB, Gedanken A. Sonochemical synthesis of carbon dots, mechanism, effect of parameters, and catalytic, energy, biomedical and tissue engineering applications. ULTRASONICS SONOCHEMISTRY 2020; 64:105009. [PMID: 32106066 DOI: 10.1016/j.ultsonch.2020.105009] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2019] [Revised: 01/28/2020] [Accepted: 02/06/2020] [Indexed: 05/27/2023]
Abstract
Carbon-based nanomaterials are gaining more and more interest because of their wide range of applications. Carbon dots (CDs) have shown exclusive interest due to unique and novel physicochemical, optical, electrical, and biological properties. Since their discovery, CDs became a promising material for wide range of research applications from energy to biomedical and tissue engineering applications. At same time several new methods have been developed for the synthesis of CDs. Compared to many of these methods, the sonochemical preparation is a green method with advantages such as facile, mild experimental conditions, green energy sources, and feasibility to formulate CDs and doped CDs with controlled physicochemical properties and lower toxicity. In the last five years, the sonochemically synthesized CDs were extensively studied in a wide range of applications. In this review, we discussed the sonochemical assisted synthesis of CDs, doped CDs and their nanocomposites. In addition to the synthetic route, we will discuss the effect of various experimental parameters on the physicochemical properties of CDs; and their applications in different research areas such as bioimaging, drug delivery, catalysis, antibacterial, polymerization, neural tissue engineering, dye absorption, ointments, electronic devices, lithium ion batteries, and supercapacitors. This review concludes with further research directions to be explored for the applications of sonochemical synthesized CDs.
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Affiliation(s)
- Raj Kumar
- Faculty of Engineering, Bar-Ilan University, Ramat Gan 52900, Israel; Bar Ilan Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat Gan 52900, Israel
| | - Vijay Bhooshan Kumar
- Bar Ilan Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat Gan 52900, Israel; Department of Chemistry, Bar-Ilan University, Ramat Gan 52900, Israel.
| | - Aharon Gedanken
- Bar Ilan Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat Gan 52900, Israel; Department of Chemistry, Bar-Ilan University, Ramat Gan 52900, Israel.
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Hu G, Xu X, Lei B, Zhuang J, Zhang X, Zhang H, Hu C, Liu X, He Y, Liu Y. Self-formed C-dot-based 2D polysiloxane with high photoluminescence quantum yield and stability. NANOSCALE 2020; 12:10771-10780. [PMID: 32391838 DOI: 10.1039/d0nr00743a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
C-Dots and composites based on them face the challenges of poor stability, especially under photo-radiation, and low solid-state photoluminescence quantum yields (PLQYs), which hinder their application in optical devices. Herein, a novel 2-dimensional hybrid material of polysiloxane embedded with Si-doped carbon dots (P-E-Si-CDs) was synthesized by a self-assembly approach, and the hybrid composite exhibited broadband blue-green fluorescence emission, outstanding photostability, high thermal stability, and a high PLQY of 82.8%. Moreover, the dual fluorescent emissions were demonstrated the creation of two closed-loop fluorophores. Using the as-prepared hybrid fluorescent material, fabricated light-emitting diodes (LEDs) based on UV and blue-emitting LED chips present safe warm white light emission and adjustable white emission with a high color rendering index of up to 91, respectively. This work provides a novel strategy for the design and realization of Si-CD-based hybrid composites, thus promising their prospective use commercially in LED lighting.
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Affiliation(s)
- Guangqi Hu
- School of Photoelectric Engineering, Guangdong Polytechnic Normal University, Guangzhou 510665, China.
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23
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Pramanik A, Biswas S, Tiwary CS, Kumbhakar P, Sarkar R, Kumbhakar P. Forster resonance energy transfer assisted white light generation and luminescence tuning in a colloidal graphene quantum dot-dye system. J Colloid Interface Sci 2020; 565:326-336. [DOI: 10.1016/j.jcis.2020.01.019] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 12/28/2019] [Accepted: 01/08/2020] [Indexed: 01/04/2023]
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Lian F, Wang C, Wu Q, Yang M, Wang Z, Zhang C. In situ synthesis of stretchable and highly stable multi-color carbon-dots/polyurethane composite films for light-emitting devices. RSC Adv 2020; 10:1281-1286. [PMID: 35494692 PMCID: PMC9047167 DOI: 10.1039/c9ra06729a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Accepted: 12/28/2019] [Indexed: 12/04/2022] Open
Abstract
Multi-color-emissive fluorescent polymer nanocomposite films have potential applications in optoelectronic devices. Herein, stretchable, mechanically stable multi-color carbon-dots-based films are in situ fabricated by condensation and aging of carboxylated polyurethane in the presence of various carbon sources. As-prepared CDs/PU films emit different colors covering from blue (414 nm) to red (620 nm) by tuning reaction conditions. Moreover, CDs are fixed and have good dispersion in the PU matrix due to the interactions of amine groups from the carbon sources with the carboxylate group of PU. Thus, phase separation of composite films can be avoided. And, more than 90% of their emission intensity is preserved after soaking in water for 30 days, aging for up to 6 h at 100 °C, and subjecting to several cycles of stretching and natural recovery. These advantages are encouraging for the use of CDs/PU composite films in solid-state lighting applications. Remote multi-color LEDs have been fabricated by placing a down-conversion layer of CDs/PU films separated through coating them on the same chips (emission at 365 nm), with Commission Internationale de l'Eclairage color coordinates of (0.22, 0.23), (0.43, 0.53), (0.49, 0.46), and (0.41, 0.28), respectively. Stretchable, mechanically stable multi-color carbon-dots-based polymer films are in situ fabricated, and showed potential for application in optoelectronic devices.![]()
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Affiliation(s)
- Fei Lian
- Institute of Environmental Processes and Pollution Control, School of Environmental and Civil Engineering, Jiangnan University Wuxi 214122 China .,Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs Tianjin 300191 China
| | - Chuanxi Wang
- Institute of Environmental Processes and Pollution Control, School of Environmental and Civil Engineering, Jiangnan University Wuxi 214122 China
| | - Qian Wu
- International Joint Research Center for Photoresponsive Molecules and Materials, School of Chemical & Material Engineering, Jiangnan University Wuxi 214122 P. R. China
| | - Minghui Yang
- Institute of New Energy Technology, Ningbo Institute of Industrial Technology, Chinese Academy of Sciences Ningbo 315201 P. R. China
| | - Zhenyu Wang
- Institute of Environmental Processes and Pollution Control, School of Environmental and Civil Engineering, Jiangnan University Wuxi 214122 China
| | - Chi Zhang
- International Joint Research Center for Photoresponsive Molecules and Materials, School of Chemical & Material Engineering, Jiangnan University Wuxi 214122 P. R. China.,School of Chemical Science and Engineering, Tongji University 1239 Siping Road Shanghai 200092 P. R. China
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Hu G, Sun Y, Zhuang J, Zhang X, Zhang H, Zheng M, Xiao Y, Liang Y, Dong H, Hu H, Lei B, Hu C, Liu Y. Enhancement of Fluorescence Emission for Tricolor Quantum Dots Assembled in Polysiloxane toward Solar Spectrum-Simulated White Light-Emitting Devices. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e1905266. [PMID: 31782905 DOI: 10.1002/smll.201905266] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 11/08/2019] [Indexed: 06/10/2023]
Abstract
Commercial white light-emitting diodes (LEDs) have the undesirable characteristics of blue-rich emission and low color rendering index (CRI), while the constituent quantum dots (QDs) suffer from aggregation-induced fluorescence quenching and poor stability. Herein, a strategy is developed to assemble tricolor QDs into a polysiloxane matrix using a polymer-mediated hybrid approach whereby the hybrid composite exhibits a significant enhancement of aggregation-dispersed emission, outstanding photostability, high thermal stability, and outstanding fluorescence recovery. Using the as-prepared hybrid fluorescent materials, the fabricated LEDs exhibit solar spectrum-simulated emission with adjustable Commission Internationale de L'Eclairage coordinates, correlated color temperature, and a recorded CRI of 97. Furthermore, they present no ultraviolet emission and weak blue emission, thus indicating an ideal healthy and high-CRI white LED lighting source.
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Affiliation(s)
- Guangqi Hu
- Guangdong Provincial Engineering Technology Research Center for Optical Agriculture, College of Materials and Energy, South China Agricultural University, Guangzhou, 510642, China
| | - Yuqiong Sun
- Guangdong Provincial Engineering Technology Research Center for Optical Agriculture, College of Materials and Energy, South China Agricultural University, Guangzhou, 510642, China
| | - Jianle Zhuang
- Guangdong Provincial Engineering Technology Research Center for Optical Agriculture, College of Materials and Energy, South China Agricultural University, Guangzhou, 510642, China
| | - Xuejie Zhang
- Guangdong Provincial Engineering Technology Research Center for Optical Agriculture, College of Materials and Energy, South China Agricultural University, Guangzhou, 510642, China
| | - Haoran Zhang
- Guangdong Provincial Engineering Technology Research Center for Optical Agriculture, College of Materials and Energy, South China Agricultural University, Guangzhou, 510642, China
| | - Mingtao Zheng
- Guangdong Provincial Engineering Technology Research Center for Optical Agriculture, College of Materials and Energy, South China Agricultural University, Guangzhou, 510642, China
| | - Yong Xiao
- Guangdong Provincial Engineering Technology Research Center for Optical Agriculture, College of Materials and Energy, South China Agricultural University, Guangzhou, 510642, China
| | - Yeru Liang
- Guangdong Provincial Engineering Technology Research Center for Optical Agriculture, College of Materials and Energy, South China Agricultural University, Guangzhou, 510642, China
| | - Hanwu Dong
- Guangdong Provincial Engineering Technology Research Center for Optical Agriculture, College of Materials and Energy, South China Agricultural University, Guangzhou, 510642, China
| | - Hang Hu
- Guangdong Provincial Engineering Technology Research Center for Optical Agriculture, College of Materials and Energy, South China Agricultural University, Guangzhou, 510642, China
| | - Bingfu Lei
- Guangdong Provincial Engineering Technology Research Center for Optical Agriculture, College of Materials and Energy, South China Agricultural University, Guangzhou, 510642, China
| | - Chaofan Hu
- Guangdong Provincial Engineering Technology Research Center for Optical Agriculture, College of Materials and Energy, South China Agricultural University, Guangzhou, 510642, China
| | - Yingliang Liu
- Guangdong Provincial Engineering Technology Research Center for Optical Agriculture, College of Materials and Energy, South China Agricultural University, Guangzhou, 510642, China
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Song H, Liu X, Wang B, Tang Z, Lu S. High production-yield solid-state carbon dots with tunable photoluminescence for white/multi-color light-emitting diodes. Sci Bull (Beijing) 2019; 64:1788-1794. [PMID: 36659538 DOI: 10.1016/j.scib.2019.10.006] [Citation(s) in RCA: 88] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2019] [Revised: 09/29/2019] [Accepted: 10/02/2019] [Indexed: 01/21/2023]
Abstract
Plastic waste is generally resistant to natural degradation and has become a major environmental pollution problem globally. The pollution of ecosystems seriously affects the health and survival of organisms, including humans. Much attention has been paid to finding suitable ways to convert plastic waste into high-value-added carbon materials. To this end, we report the high production yield (60%-85%) of carbon dots (CDs) for solid-state fluorescence (SSF) obtained by a one-step solvothermal method using waste expanded polystyrene as the precursor. The SSF mechanism of the CDs was also explored. Their emission wavelength, with a large full width at half maximum of 150-200 nm, exhibited tunable photoluminescence from white to yellow and orange. CDs powder was used to fabricate single-component white and multi-colour light-emitting diodes on UV chips. Overall, plastic waste was converted into tunable solid-state fluorescent CDs powder, which has promising applications in carbon-based lighting, by a simple solvothermal method that provides a viable method for recycling plastic waste.
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Affiliation(s)
- Haoqiang Song
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Xuejian Liu
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Boyang Wang
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Zhiyong Tang
- Henan Institute of Advanced Technology, Zhengzhou University, Zhengzhou 450001, China; CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
| | - Siyu Lu
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China; Henan Institute of Advanced Technology, Zhengzhou University, Zhengzhou 450001, China.
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Progress in the Synthesis of Bifunctionalized Polyhedral Oligomeric Silsesquioxane. Polymers (Basel) 2019; 11:polym11122098. [PMID: 31847358 PMCID: PMC6960853 DOI: 10.3390/polym11122098] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 12/10/2019] [Accepted: 12/11/2019] [Indexed: 01/29/2023] Open
Abstract
Polyhedral oligomeric silsesquioxane (POSS) has been considered as one of the most promising nanofillers in academic and industrial research due to its unique multifunctional nanostructure, easy functionalization, hybrid nature, and high processability. The progress of POSS has been extensive, particularly applications based on single- or multiple-armed POSS. In polymer hybrids, in order to enhance the properties, bifunctional POSS has been incorporated into the backbone chain of the polymer. This review summarizes recent developments in the synthesis, modification, and application of bifunctional POSS-containing composite materials. This includes amino-POSS, hydroxyl-POSS, aromatic ring-POSS, ether-POSS, and vinyl groups-POSS and their applications, exemplified by polyurethanes (PUs) and polyimides (PIs). In addition, the review highlights the enhancement of thermal, mechanical, and optical properties of the composites.
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28
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Xiong Y, Zhang X, Richter AF, Li Y, Döring A, Kasák P, Popelka A, Schneider J, Kershaw SV, Yoo SJ, Kim JG, Zhang W, Zheng W, Ushakova EV, Feldmann J, Rogach AL. Chemically Synthesized Carbon Nanorods with Dual Polarized Emission. ACS NANO 2019; 13:12024-12031. [PMID: 31589022 DOI: 10.1021/acsnano.9b06263] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We realized the synthesis of carbon nanorods-monodisperse colloidal particles with a length of 50 nm and a width of 20 nm-which can be considered an addition to the family of light-emitting carbon-based nanostructures. Their anisotropic shape is determined by the use of the surfactant aminopropylisobutyl polyhedral oligomeric silsesquioxane, and their optical properties originate from domains of polycyclic aromatic hydrocarbons incorporated within an inorganic framework. The nanorods show dual polarized emission with a quantum yield of 15-20% and emission anisotropy of ∼0.3, which changes from blue (460 nm) to yellow (565 nm) depending on the excitation wavelength. These carbon nanorods expand the range of light-emitting carbon nanomaterials available for optoelectronic and biolabeling applications.
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Affiliation(s)
- Yuan Xiong
- Department of Materials Science and Engineering and Center for Functional Photonics (CFP) , City University of Hong Kong , 83 Tat Chee Avenue , Kowloon , Hong Kong S.A.R
| | - Xiaoyu Zhang
- School of Materials Science and Engineering , Jilin University , Changchun 130012 , P.R. China
| | - Alexander F Richter
- Chair for Photonics and Optoelectronics, Nano-Institute Munich, Department of Physics , Ludwig-Maximilians-Universität (LMU) , Königinstr. 10 , 80539 Munich , Germany
- Nanosystems Initiative Munich (NIM) and Center for NanoScience (CeNS) , Ludwig-Maximilians-Universität (LMU) , Schellingstr. 4 , 80799 Munich , Germany
| | - Yanxiu Li
- Department of Materials Science and Engineering and Center for Functional Photonics (CFP) , City University of Hong Kong , 83 Tat Chee Avenue , Kowloon , Hong Kong S.A.R
| | - Aaron Döring
- Department of Materials Science and Engineering and Center for Functional Photonics (CFP) , City University of Hong Kong , 83 Tat Chee Avenue , Kowloon , Hong Kong S.A.R
| | - Peter Kasák
- Center for Advanced Materials , Qatar University , PO Box 2713, Doha Qatar
| | - Anton Popelka
- Center for Advanced Materials , Qatar University , PO Box 2713, Doha Qatar
| | - Julian Schneider
- Department of Materials Science and Engineering and Center for Functional Photonics (CFP) , City University of Hong Kong , 83 Tat Chee Avenue , Kowloon , Hong Kong S.A.R
| | - Stephen V Kershaw
- Department of Materials Science and Engineering and Center for Functional Photonics (CFP) , City University of Hong Kong , 83 Tat Chee Avenue , Kowloon , Hong Kong S.A.R
| | - Seung Jo Yoo
- Electron Microscopy Research Center , Korea Basic Science Institute , Daejeon 34133 , South Korea
| | - Jin-Gyu Kim
- Electron Microscopy Research Center , Korea Basic Science Institute , Daejeon 34133 , South Korea
| | - Wei Zhang
- School of Materials Science and Engineering , Jilin University , Changchun 130012 , P.R. China
| | - Weitao Zheng
- School of Materials Science and Engineering , Jilin University , Changchun 130012 , P.R. China
| | - Elena V Ushakova
- Department of Materials Science and Engineering and Center for Functional Photonics (CFP) , City University of Hong Kong , 83 Tat Chee Avenue , Kowloon , Hong Kong S.A.R
- Center of Information Optical Technologies , ITMO University , 49 Kronverkskii pr. , Saint Petersburg 197101 , Russia
| | - Jochen Feldmann
- Chair for Photonics and Optoelectronics, Nano-Institute Munich, Department of Physics , Ludwig-Maximilians-Universität (LMU) , Königinstr. 10 , 80539 Munich , Germany
- Nanosystems Initiative Munich (NIM) and Center for NanoScience (CeNS) , Ludwig-Maximilians-Universität (LMU) , Schellingstr. 4 , 80799 Munich , Germany
| | - Andrey L Rogach
- Department of Materials Science and Engineering and Center for Functional Photonics (CFP) , City University of Hong Kong , 83 Tat Chee Avenue , Kowloon , Hong Kong S.A.R
- Center of Information Optical Technologies , ITMO University , 49 Kronverkskii pr. , Saint Petersburg 197101 , Russia
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29
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Zhai Y, Shen F, Zhang X, Jing P, Li D, Yang X, Zhou D, Xu X, Qu S. Synthesis of green emissive carbon dots@montmorillonite composites and their application for fabrication of light-emitting diodes and latent fingerprints markers. J Colloid Interface Sci 2019; 554:344-352. [DOI: 10.1016/j.jcis.2019.07.022] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 07/07/2019] [Accepted: 07/08/2019] [Indexed: 01/06/2023]
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30
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Tepliakov NV, Kundelev EV, Khavlyuk PD, Xiong Y, Leonov MY, Zhu W, Baranov AV, Fedorov AV, Rogach AL, Rukhlenko ID. sp 2-sp 3-Hybridized Atomic Domains Determine Optical Features of Carbon Dots. ACS NANO 2019; 13:10737-10744. [PMID: 31411860 DOI: 10.1021/acsnano.9b05444] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Carbon dots (CDots) are a promising biocompatible nanoscale source of light, yet the origin of their emission remains under debate. Here, we show that all the distinctive optical properties of CDots, including the giant Stokes shift of photoluminescence and the strong dependence of emission color on excitation wavelength, can be explained by the linear optical response of the partially sp2-hybridized carbon domains located on the surface of the CDots' sp3-hybridized amorphous cores. Using a simple quantum chemical approach, we show that the domain hybridization factor determines the localization of electrons and the electronic bandgap inside the domains and analyze how the distribution of this factor affects the emission properties of CDots. Our calculation data fully agree with the experimental optical properties of CDots, confirming the overall theoretical picture underlying the model. It is also demonstrated that fabrication of CDots with large hybridization factors of carbon domains shifts their emission to the red side of the visible spectrum, without a need to modify the size or shape of the CDots. Our theoretical model provides a useful tool for experimentalists and may lead to extending the applications of CDots in biophysics, optoelectronics, and photovoltaics.
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Affiliation(s)
- Nikita V Tepliakov
- Information Optical Technologies Center , ITMO University , Saint Petersburg 197101 , Russia
| | - Evgeny V Kundelev
- Information Optical Technologies Center , ITMO University , Saint Petersburg 197101 , Russia
| | - Pavel D Khavlyuk
- Information Optical Technologies Center , ITMO University , Saint Petersburg 197101 , Russia
| | - Yuan Xiong
- Department of Materials Science and Engineering and Centre for Functional Photonics (CFP) , City University of Hong Kong , Kowloon , Hong Kong SAR , China
| | - Mikhail Yu Leonov
- Information Optical Technologies Center , ITMO University , Saint Petersburg 197101 , Russia
| | - Weiren Zhu
- Department of Electronic Engineering , Shanghai Jiao Tong University , Shanghai 200240 , China
| | - Alexander V Baranov
- Information Optical Technologies Center , ITMO University , Saint Petersburg 197101 , Russia
| | - Anatoly V Fedorov
- Information Optical Technologies Center , ITMO University , Saint Petersburg 197101 , Russia
| | - Andrey L Rogach
- Information Optical Technologies Center , ITMO University , Saint Petersburg 197101 , Russia
- Department of Materials Science and Engineering and Centre for Functional Photonics (CFP) , City University of Hong Kong , Kowloon , Hong Kong SAR , China
| | - Ivan D Rukhlenko
- Information Optical Technologies Center , ITMO University , Saint Petersburg 197101 , Russia
- Institute of Photonics and Optical Science (IPOS), School of Physics , The University of Sydney , Camperdown 2006 , NSW , Australia
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31
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Chen X, Bai J, Ma Y, Yuan G, Mei J, Zhang L, Ren L. Multifunctional sensing applications of biocompatible N-doped carbon dots as pH and Fe3+ sensors. Microchem J 2019. [DOI: 10.1016/j.microc.2019.103981] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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32
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Song SY, Liu KK, Wei JY, Lou Q, Shang Y, Shan CX. Deep-Ultraviolet Emissive Carbon Nanodots. NANO LETTERS 2019; 19:5553-5561. [PMID: 31276414 DOI: 10.1021/acs.nanolett.9b02093] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Deep-ultraviolet (DUV) emissive carbon nanodots (CNDs) have been designed theoretically and demonstrated experimentally based on the results of first-principles calculations using the density functional theory method. The emission of the CNDs is located in the range from 280 to 300 nm, which coincides well with the results of theoretical calculation results. The photoluminescence (PL) quantum yield (QY) of the CNDs is up to 31.6%, and the strong emission of the CNDs originates from core-state (π-π*) carriers' radiative recombination and surface passivation. Benefiting from the core-state emission and surface group passivation, the emission of the CNDs is independent of the excitation wavelength and ambient solvent. DUV light-emitting diodes (LEDs) have been fabricated based on the DUV emissive CNDs, and the LEDs can be used as the excitation source to excite blue, green, and red CNDs, indicating their potential application in DUV light sources. This work may provide a clue for the designing and realizing of DUV emissive CNDs, thus promising the potential application of CNDs in DUV light-emitting sources.
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Affiliation(s)
- Shi-Yu Song
- Henan Key Laboratory of Diamond Optoelectronic Materials and Devices, Key Laboratory of Material Physics, Ministry of Education, School of Physics , Zhengzhou University , Zhengzhou 450052 , China
| | - Kai-Kai Liu
- Henan Key Laboratory of Diamond Optoelectronic Materials and Devices, Key Laboratory of Material Physics, Ministry of Education, School of Physics , Zhengzhou University , Zhengzhou 450052 , China
| | - Jian-Yong Wei
- Henan Key Laboratory of Diamond Optoelectronic Materials and Devices, Key Laboratory of Material Physics, Ministry of Education, School of Physics , Zhengzhou University , Zhengzhou 450052 , China
| | - Qing Lou
- Henan Key Laboratory of Diamond Optoelectronic Materials and Devices, Key Laboratory of Material Physics, Ministry of Education, School of Physics , Zhengzhou University , Zhengzhou 450052 , China
| | - Yuan Shang
- Super Computer Center, Smart City Institute , Zhengzhou University , Zhengzhou 450001 , China
| | - Chong-Xin Shan
- Henan Key Laboratory of Diamond Optoelectronic Materials and Devices, Key Laboratory of Material Physics, Ministry of Education, School of Physics , Zhengzhou University , Zhengzhou 450052 , China
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Wang C, Hu T, Chen Y, Xu Y, Song Q. Polymer-Assisted Self-Assembly of Multicolor Carbon Dots as Solid-State Phosphors for Fabrication of Warm, High-Quality, and Temperature-Responsive White-Light-Emitting Devices. ACS APPLIED MATERIALS & INTERFACES 2019; 11:22332-22338. [PMID: 31203602 DOI: 10.1021/acsami.9b04345] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
White-light-emitting devices (WLEDs) are considered to be a promising illumination source; especially, the WLEDs based on carbon dots (CDs) with white fluorescence have attracted extensive research interest. Herein, we report the design and implementation of solid white-light-emitting phosphors (WCDs@PS), which combine blue and orange emissive CDs (BCDs and OCDs) assisted by polystyrene (PS) through a self-assembly technique. Based on these phosphors (OCDs/BCDs = 1.2:1), the obtained WLEDs display a warm white light with International Commission on Illumination (CIE) coordinates of (0.35, 0.36), a high color rendering index of 93.2, a low correlated color temperature of 4075 K, and a luminous efficiency of up to 14.8 lm·W-1. Interestingly, these WLEDs exhibit temperature-dependent emission performance, whose light-emission spectrum can be adjusted in situ from white (λ ∼ 400-730 nm) to blue (λ ∼ 440 nm) in the range of 20-80 °C. A change in CIE coordinates from (0.35, 0.36) to (0.32, 0.23) was also observed. The temperature-driven tunable LEDs as a thermochromism device could broaden the application of CDs-based lighting systems in special displays.
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Affiliation(s)
- Chan Wang
- Key Laboratory of Synthetic and Biological Colloids, Ministey of Education, International Joint Research Center for Photoresponsive Molecules and Materials, School of Chemical & Material Engineering , Jiangnan University , Wuxi 214122 , P. R. China
| | - Tantan Hu
- Key Laboratory of Synthetic and Biological Colloids, Ministey of Education, International Joint Research Center for Photoresponsive Molecules and Materials, School of Chemical & Material Engineering , Jiangnan University , Wuxi 214122 , P. R. China
| | - Yueyue Chen
- Key Laboratory of Synthetic and Biological Colloids, Ministey of Education, International Joint Research Center for Photoresponsive Molecules and Materials, School of Chemical & Material Engineering , Jiangnan University , Wuxi 214122 , P. R. China
| | - Yalan Xu
- Key Laboratory of Synthetic and Biological Colloids, Ministey of Education, International Joint Research Center for Photoresponsive Molecules and Materials, School of Chemical & Material Engineering , Jiangnan University , Wuxi 214122 , P. R. China
| | - Qijun Song
- Key Laboratory of Synthetic and Biological Colloids, Ministey of Education, International Joint Research Center for Photoresponsive Molecules and Materials, School of Chemical & Material Engineering , Jiangnan University , Wuxi 214122 , P. R. China
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A Facile Approach to Solid-State White Emissive Carbon Dots and Their Application in UV-Excitable and Single-Component-Based White LEDs. NANOMATERIALS 2019; 9:nano9050725. [PMID: 31083426 PMCID: PMC6566165 DOI: 10.3390/nano9050725] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 05/05/2019] [Accepted: 05/07/2019] [Indexed: 11/16/2022]
Abstract
Large-scale applications of conventional rare-earth phosphors in white light-emitting diodes (W-LEDs) are restricted by the non-renewable raw material sources and high energy consumption during the production process. Recently, carbon dots (CDs) have been proposed as promising alternatives to rare-earth phosphors and present bright prospects in white lighting. However, the use of CDs in W-LEDs still has two major obstacles, i.e., solid-state quenching and lack of single-component white emissive products. In this work, a facile, rapid, and scalable method for the preparation of solid-state white emissive CDs (W-CDs) is reported via microwave-irradiation heating of L-aspartic acid (AA) in the presence of ammonia. The W-CDs exhibit blue photoluminescence (PL) in dilute aqueous dispersion and their emission spectra gradually broaden (emerging new emissions at orange-yellow regions) with concentration increases. Interestingly, the W-CDs powder displays a very broad PL spectrum covering nearly the whole visible-light region under ultraviolet (UV) excitation, which is responsible for the observed white emission. Further studies revealed that the self-quenching-resistance feature of the W-CDs is probably due to a covering of polymer-like structures on their surface, thus avoiding the close contact of nanoparticles with each other. PL emission of the W-CDs is reasonably ascribed to a cross-linked enhanced effect (CEE) of the sub-fluorophores contained in the material (e.g., –NH2 and C=O). Finally, applications of the W-CDs in fabricating single-component-based W-LEDs using commercially available UV chips were attempted and shown to exhibit satisfactory performances including high white light-emitting purity, high color rendering index (CRI), and tunable correlated color temperature (CCT), thus rendering great promise for W-CDs in the field of white lighting.
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Chen B, Xie H, Wang S, Guo Z, Hu Y, Xie H. UV light‐tunable fluorescent inks and polymer hydrogel films based on carbon nanodots and lanthanide for enhancing anti‐counterfeiting. LUMINESCENCE 2019; 34:437-443. [DOI: 10.1002/bio.3636] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 02/24/2019] [Accepted: 03/31/2019] [Indexed: 11/08/2022]
Affiliation(s)
- Bing Chen
- Faculty of Materials Science and Chemical Engineering, State Key Laboratory Base of Novel Functional Materials and Preparation ScienceNingbo University Ningbo People's Republic of China
| | - Houpeng Xie
- Faculty of Materials Science and Chemical Engineering, State Key Laboratory Base of Novel Functional Materials and Preparation ScienceNingbo University Ningbo People's Republic of China
| | - Sui Wang
- Faculty of Materials Science and Chemical Engineering, State Key Laboratory Base of Novel Functional Materials and Preparation ScienceNingbo University Ningbo People's Republic of China
| | - Zhiyong Guo
- Faculty of Materials Science and Chemical Engineering, State Key Laboratory Base of Novel Functional Materials and Preparation ScienceNingbo University Ningbo People's Republic of China
| | - Yufang Hu
- Faculty of Materials Science and Chemical Engineering, State Key Laboratory Base of Novel Functional Materials and Preparation ScienceNingbo University Ningbo People's Republic of China
| | - Hongzhen Xie
- Faculty of Materials Science and Chemical Engineering, State Key Laboratory Base of Novel Functional Materials and Preparation ScienceNingbo University Ningbo People's Republic of China
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36
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Hu T, Wen Z, Wang C, Thomas T, Wang C, Song Q, Yang M. Temperature-controlled spectral tuning of full-color carbon dots and their strongly fluorescent solid-state polymer composites for light-emitting diodes. NANOSCALE ADVANCES 2019; 1:1413-1420. [PMID: 36132618 PMCID: PMC9417643 DOI: 10.1039/c8na00329g] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Accepted: 01/17/2019] [Indexed: 05/09/2023]
Abstract
The development of full-color/white carbon-dot-based light-emitting diodes (LEDs) has been achieved, which show promising applications in full-color and flexible displays, backlights, and novel lighting sources. The gram-level synthesis of these full-color carbon dots (CDs) from citric acid by controlling the temperature has been achieved. By increasing the temperature from 120 to 180 °C, two, four, and six light-emitting CDs can be obtained, for which the emission wavelength shifts from 440 to 585 nm. This result reveals that temperature has a huge impact on the evolution of surface states, that is, increasing the temperature brings about enhanced surface functionalization and passivation, resulting in a red shift of the emission wavelength and enhancement of quantum yield. Then, full-color CDs/polymer composite phosphors are fabricated for efficient phosphor-based LED devices with quench-resistant solid-state fluorescence. By regulating the proportion of various CDs/polymer phosphors, white LEDs are realized with Commission Internationale de L'Eclairage coordinates of (0.32, 0.33) and a color rendering index of 82.7. The as-prepared CD-based full/white color LEDs can prove to be promising candidates for alternative light sources.
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Affiliation(s)
- Tantan Hu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, International Joint Research Center for Photoresponsive Molecules and Materials, School of Chemical & Material Engineering, Jiangnan University Wuxi 214122 P. R. China
| | - Zhuoqi Wen
- Institute of New Energy Technology, Ningbo Institute of Industrial Technology, Chinese Academy of Sciences Ningbo 315201 P. R. China
| | - Chan Wang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, International Joint Research Center for Photoresponsive Molecules and Materials, School of Chemical & Material Engineering, Jiangnan University Wuxi 214122 P. R. China
| | - Tiju Thomas
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras Chennai 600036 Tamil Nadu India
| | - Chuanxi Wang
- Institute of New Energy Technology, Ningbo Institute of Industrial Technology, Chinese Academy of Sciences Ningbo 315201 P. R. China
| | - Qijun Song
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, International Joint Research Center for Photoresponsive Molecules and Materials, School of Chemical & Material Engineering, Jiangnan University Wuxi 214122 P. R. China
| | - Minghui Yang
- Institute of New Energy Technology, Ningbo Institute of Industrial Technology, Chinese Academy of Sciences Ningbo 315201 P. R. China
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37
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Zhou D, Jing P, Wang Y, Zhai Y, Li D, Xiong Y, Baranov AV, Qu S, Rogach AL. Carbon dots produced via space-confined vacuum heating: maintaining efficient luminescence in both dispersed and aggregated states. NANOSCALE HORIZONS 2019; 4:388-395. [PMID: 32254091 DOI: 10.1039/c8nh00247a] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Aggregation-induced quenching (AIQ) of emission is an obstacle for the development of carbon dots (CDots) for solid-state luminescent devices. In this work, we introduce a method to avoid AIQ and to produce highly luminescent CDots through a space-confined vacuum heating synthesis. In the presence of CaCl2, a mixture of citric acid and urea forms an inflated foam under vacuum heating at 120 °C. Upon gradually increasing the heating temperature to 250 °C, blue emissive molecular species are first formed, and are then transformed into uniform-sized green emissive CDots through dehydration and carbonization processes taking place in the confined ultrathin spaces of the foam walls. The green luminescence of these CDots originates from conjugated sp2 domains, and these CDots exhibit a high photoluminescence quantum yield (PLQY) of 72% in ethanol solution. Remarkably, due to the existence of only one type of recombination center in these nanoparticles, AIQ does not take place in CDot-based close-packed films, which show strong emission with a PLQY of 65%. Utilizing the differences in the emission properties of vacuum heating produced CDots, CDots synthesized through microwave-assisted heating, and commercial green fluorescent organic ink (namely, excitation-dependent vs. excitation-independent emission, and different stability against photobleaching), multilevel data encryption has been demonstrated.
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Affiliation(s)
- Ding Zhou
- State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, P. R. China
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38
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Tian Z, Tian P, Zhou X, Zhou G, Mei S, Zhang W, Zhang X, Li D, Zhou D, Guo R, Qu S, Rogach AL. Ultraviolet-pumped white light emissive carbon dot based phosphors for light-emitting devices and visible light communication. NANOSCALE 2019; 11:3489-3494. [PMID: 30742186 DOI: 10.1039/c9nr00224c] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Herein, we report UV-pumped white light emissive carbon dot (CD)-based phosphors to prevent blue light hazard in phosphor-converted WLEDs. Then, UV-pumped WLEDs with a color rendering index exceeding 85 and VLC with a modulation bandwidth of 75 MHz and a data transmission rate of 224 Mbps have been realized.
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Affiliation(s)
- Zhen Tian
- State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China and University of Chinese Academy of Sciences, Beijing 100049, China
| | - Pengfei Tian
- Engineering Research Center of Advanced Lighting Technology, Ministry of Education, Institute of Future Lighting, Academy for Engineering and Technology, Fudan University, Shanghai 200433, China.
| | - Xiaojie Zhou
- Engineering Research Center of Advanced Lighting Technology, Ministry of Education, Institute of Future Lighting, Academy for Engineering and Technology, Fudan University, Shanghai 200433, China.
| | - Gufan Zhou
- Engineering Research Center of Advanced Lighting Technology, Ministry of Education, Institute of Future Lighting, Academy for Engineering and Technology, Fudan University, Shanghai 200433, China.
| | - Shiliang Mei
- Engineering Research Center of Advanced Lighting Technology, Ministry of Education, Institute of Future Lighting, Academy for Engineering and Technology, Fudan University, Shanghai 200433, China.
| | - Wanlu Zhang
- Engineering Research Center of Advanced Lighting Technology, Ministry of Education, Institute of Future Lighting, Academy for Engineering and Technology, Fudan University, Shanghai 200433, China.
| | - Xutao Zhang
- State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China and University of Chinese Academy of Sciences, Beijing 100049, China
| | - Di Li
- State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
| | - Ding Zhou
- State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
| | - Ruiqian Guo
- Engineering Research Center of Advanced Lighting Technology, Ministry of Education, Institute of Future Lighting, Academy for Engineering and Technology, Fudan University, Shanghai 200433, China.
| | - Songnan Qu
- State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China and Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau, China.
| | - Andrey L Rogach
- Department of Materials Science and Engineering, Centre for Functional Photonics (CFP), City University of Hong Kong, Kowloon, Hong Kong SAR, China
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39
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Kalytchuk S, Wang Y, Poláková K, Zbořil R. Carbon Dot Fluorescence-Lifetime-Encoded Anti-Counterfeiting. ACS APPLIED MATERIALS & INTERFACES 2018; 10:29902-29908. [PMID: 30085654 DOI: 10.1021/acsami.8b11663] [Citation(s) in RCA: 97] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Carbon dots (CDs) rank among the most promising luminescent nanomaterials for anti-counterfeiting application owing to their high fluorescence quantum yield and nontoxicity. Herein, we report a novel, high-level security performance anti-counterfeiting strategy achieved by fluorescence-lifetime-encoded CD fluorescent inks. CD-inks have identical steady-state emission properties, but they have distinctive and well-separated fluorescence lifetimes, allowing authentication of security tags using exclusively fluorescence lifetime imaging. A proof-of-concept anti-counterfeiting tag using CD-based lifetime-encoded inks is demonstrated. The developed CD lifetime-based anti-counterfeit technology is awaited to be applicable to a wide spectrum of security-protecting purposes. Furthermore, the presented method can be easily extended to integrate fluorescence-lifetime-encoded CDs in multichannel bioimaging, high-throughput flow cytometry, and optical data storage.
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Affiliation(s)
- Sergii Kalytchuk
- Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science , Palacký University Olomouc , Šlechtitelů 27 , 783 71 Olomouc , Czech Republic
| | - Yu Wang
- Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science , Palacký University Olomouc , Šlechtitelů 27 , 783 71 Olomouc , Czech Republic
| | - Kateřina Poláková
- Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science , Palacký University Olomouc , Šlechtitelů 27 , 783 71 Olomouc , Czech Republic
| | - Radek Zbořil
- Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science , Palacký University Olomouc , Šlechtitelů 27 , 783 71 Olomouc , Czech Republic
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40
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Zhou Z, Tian P, Liu X, Mei S, Zhou D, Li D, Jing P, Zhang W, Guo R, Qu S, Rogach AL. Hydrogen Peroxide-Treated Carbon Dot Phosphor with a Bathochromic-Shifted, Aggregation-Enhanced Emission for Light-Emitting Devices and Visible Light Communication. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2018; 5:1800369. [PMID: 30128244 PMCID: PMC6097149 DOI: 10.1002/advs.201800369] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 05/19/2018] [Indexed: 05/18/2023]
Abstract
It is demonstrated that treatment of blue-emissive carbon dots (CDs) with aqueous hydrogen peroxide (H2O2) results in the green emissive solid state CD phosphor with photoluminescence quantum yield of 25% and short luminescence lifetime of 6 ns. The bathochromic-shifted, enhanced green emission of H2O2-treated CDs in the powder is ascribed to surface state changes occurring in the aggregated material. Using the green emissive H2O2-treated CD phosphor, down-conversion white-light-emitting devices with cool, pure, and warm white light are fabricated. Moreover, using the green emissive CD phosphor as a color converter, a laser-based white-light source is realized, and visible light communication with a high modulation bandwidth of up to 285 MHz and data transmission rate of ≈435 Mbps is demonstrated.
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Affiliation(s)
- Zhengjie Zhou
- State Key Laboratory of Luminescence and ApplicationsChangchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of SciencesChangchun130033P. R. China
- University of Chinese Academy of SciencesBeijing100049P. R. China
| | - Pengfei Tian
- Engineering Research Center of Advanced Lighting TechnologyMinistry of EducationInstitute for Electric Light SourcesFudan UniversityShanghai200433P. R. China
| | - Xiaoyan Liu
- Engineering Research Center of Advanced Lighting TechnologyMinistry of EducationInstitute for Electric Light SourcesFudan UniversityShanghai200433P. R. China
| | - Shiliang Mei
- Engineering Research Center of Advanced Lighting TechnologyMinistry of EducationInstitute for Electric Light SourcesFudan UniversityShanghai200433P. R. China
| | - Ding Zhou
- State Key Laboratory of Luminescence and ApplicationsChangchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of SciencesChangchun130033P. R. China
| | - Di Li
- State Key Laboratory of Luminescence and ApplicationsChangchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of SciencesChangchun130033P. R. China
| | - Pengtao Jing
- State Key Laboratory of Luminescence and ApplicationsChangchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of SciencesChangchun130033P. R. China
| | - Wanlu Zhang
- Engineering Research Center of Advanced Lighting TechnologyMinistry of EducationInstitute for Electric Light SourcesFudan UniversityShanghai200433P. R. China
| | - Ruiqian Guo
- Engineering Research Center of Advanced Lighting TechnologyMinistry of EducationInstitute for Electric Light SourcesFudan UniversityShanghai200433P. R. China
| | - Songnan Qu
- State Key Laboratory of Luminescence and ApplicationsChangchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of SciencesChangchun130033P. R. China
| | - Andrey L. Rogach
- Department of Materials Science and Engineering, and Centre for Functional PhotonicsCity University of Hong KongKowloonHong Kong SARP. R. China
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41
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Zhi B, Cui Y, Wang S, Frank BP, Williams DN, Brown RP, Melby ES, Hamers RJ, Rosenzweig Z, Fairbrother DH, Orr G, Haynes CL. Malic Acid Carbon Dots: From Super-resolution Live-Cell Imaging to Highly Efficient Separation. ACS NANO 2018; 12:5741-5752. [PMID: 29883099 DOI: 10.1021/acsnano.8b01619] [Citation(s) in RCA: 82] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
As-synthesized malic acid carbon dots are found to possess photoblinking properties that are outstanding and superior compared to those of conventional dyes. Considering their excellent biocompatibility, malic acid carbon dots are suitable for super-resolution fluorescence localization microscopy under a variety of conditions, as we demonstrate in fixed and live trout gill epithelial cells. In addition, during imaging experiments, the so-called "excitation wavelength-dependent" emission was not observed for individual as-made malic acid carbon dots, which motivated us to develop a time-saving and high-throughput separation technique to isolate malic acid carbon dots into fractions of different particle size distributions using C18 reversed-phase silica gel column chromatography. This post-treatment allowed us to determine how particle size distribution influences the optical properties of malic acid carbon dot fractions, that is, optical band gap energies and photoluminescence behaviors.
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Affiliation(s)
- Bo Zhi
- Department of Chemistry , University of Minnesota-Twin Cities , Minneapolis , Minnesota 55455 , United States
| | - Yi Cui
- Environmental Molecular Sciences Laboratory , Pacific Northwest National Laboratory , Richland , Washington 99354 , United States
| | - Shengyang Wang
- Department of Chemistry , University of Minnesota-Twin Cities , Minneapolis , Minnesota 55455 , United States
| | - Benjamin P Frank
- Department of Chemistry , The Johns Hopkins University , Baltimore , Maryland 21218 , United States
| | - Denise N Williams
- Department of Chemistry and Biochemistry , University of Maryland, Baltimore County , Baltimore , Maryland 21250 , United States
| | - Richard P Brown
- Department of Chemistry and Biochemistry , University of Maryland, Baltimore County , Baltimore , Maryland 21250 , United States
| | - Eric S Melby
- Environmental Molecular Sciences Laboratory , Pacific Northwest National Laboratory , Richland , Washington 99354 , United States
| | - Robert J Hamers
- Department of Chemistry , University of Wisconsin-Madison , Madison , Wisconsin 53706 , United States
| | - Zeev Rosenzweig
- Department of Chemistry and Biochemistry , University of Maryland, Baltimore County , Baltimore , Maryland 21250 , United States
| | - D Howard Fairbrother
- Department of Chemistry , The Johns Hopkins University , Baltimore , Maryland 21218 , United States
| | - Galya Orr
- Environmental Molecular Sciences Laboratory , Pacific Northwest National Laboratory , Richland , Washington 99354 , United States
| | - Christy L Haynes
- Department of Chemistry , University of Minnesota-Twin Cities , Minneapolis , Minnesota 55455 , United States
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42
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Zhang T, Zhao F, Li L, Qi B, Zhu D, Lü J, Lü C. Tricolor White-Light-Emitting Carbon Dots with Multiple-Cores@Shell Structure for WLED Application. ACS APPLIED MATERIALS & INTERFACES 2018; 10:19796-19805. [PMID: 29792664 DOI: 10.1021/acsami.8b03529] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The past few years have witnessed the rapid development of carbon dots (CDs) due to their outstanding optical properties and a wide range of applications. However, the design and control of CDs with long-wavelength multicolor emission are still huge challenges to be addressed for their practical use in different fields. Here, novel nitrogen-doped multiple-core@shell-structured AC-CDs with tricolor emissions of red, green, and blue were constructed via one-pot hydrothermal method from 5-amino-1,10-phenanthroline and citric acid as reactants and the growth process of AC-CDs was monitored with the reaction time in the synthetic system. The origin of different fluorescence emissions was explored using the unique coordination ability of the surface groups of AC-CDs. An obvious concentration dependence of fluorescent properties was observed for the as-prepared AC-CDs, and a highly fluorescent quantum yield (QY) of 67% for red emission at 630 nm can be obtained by adjusting concentration of AC-CDs. The pure white-light emission (0.33, 0.33; Commission Internationale de l'Elcairage coordinate) was carried out from single carbon dot with QY of 29% through regulation of the excitation and concentration of multiple-core@shell-structured AC-CDs. In addition, because of their excellent photoluminescent properties, the white-emitting AC-CDs as emitting phosphor can be easily used in the fabrication of white-light-emitting diode with good anti-photobleaching and temperature stability.
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Affiliation(s)
- Tianyi Zhang
- College of Chemistry , Northeast Normal University , Changchun 130024 , P. R. China
| | - Feifei Zhao
- College of Chemistry , Northeast Normal University , Changchun 130024 , P. R. China
| | - Li Li
- College of Chemistry , Northeast Normal University , Changchun 130024 , P. R. China
| | - Bin Qi
- College of Chemistry , Northeast Normal University , Changchun 130024 , P. R. China
| | - Dongxia Zhu
- College of Chemistry , Northeast Normal University , Changchun 130024 , P. R. China
| | - Jianhua Lü
- College of Chemistry , Northeast Normal University , Changchun 130024 , P. R. China
| | - Changli Lü
- College of Chemistry , Northeast Normal University , Changchun 130024 , P. R. China
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43
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Red carbon dots-based phosphors for white light-emitting diodes with color rendering index of 92. J Colloid Interface Sci 2018; 528:281-288. [PMID: 29859453 DOI: 10.1016/j.jcis.2018.05.101] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 05/07/2018] [Accepted: 05/28/2018] [Indexed: 01/05/2023]
Abstract
Exploration of solid-state efficient red emissive carbon dots (CDs) phosphors is strongly desired for the development of high performance CDs-based white light-emitting diodes (WLEDs). In this work, enhanced red emissive CDs-based phosphors with photoluminescence quantum yields (PLQYs) of 25% were prepared by embedding red emissive CDs (PLQYs of 23%) into polyvinyl pyrrolidone (PVP). Because of the protection of PVP, the phosphors could preserve strong luminescence under long-term UV excitation or being mixed with conventional packaging materials. By applying the red emissive phosphors as the color conversion layer, WLEDs with high color rendering index of 92 and color coordinate of (0.33, 0.33) are fabricated.
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44
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Feng T, Zhu S, Zeng Q, Lu S, Tao S, Liu J, Yang B. Supramolecular Cross-Link-Regulated Emission and Related Applications in Polymer Carbon Dots. ACS APPLIED MATERIALS & INTERFACES 2018; 10:12262-12277. [PMID: 29164859 DOI: 10.1021/acsami.7b14857] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Involvement of clear photoluminescence (PL) mechanism in specific chemical structure is at the forefront of carbon dots (CDs). Supramolecular interaction exists in plenty of materials, offering an inherent way to administrate the optical and photophysical properties, especially in terms of newly developed polymer carbon dots (PCDs). However, supramolecular-interaction-derived PL regulation is always ignored in the shadow of many kinds of PL factors, and we still have a limited understanding on the distinct chemical structure and mechanism of supramolecular effect in PCDs. Herein, several distinct photoluminescent phenomena of PCDs under aqueous and solid state are reviewed in terms of supramolecular cross-linking, with highly emphasizing the importance of supramolecular cross-link-enhanced emission (SCEE) effects, and the regulated function of supramolecular interaction's intensity and types between PCDs for special PL behaviors of PCDs. In addition, we categorize the photoluminescent phenomena in PCDs into the following aspects: supramolecular cross-link-enhanced dilute-solution-state emission, concentration-controlled multicolor emission, supramolecular regulation for quenching-resistant solid-state fluorescence, as well as supramolecular cross-link-assisted room-temperature- phosphorescence (RTP) under solid states. Furthermore, the applications of PCDs in light-emitting diodes (LED), solar cells, and anticounterfeiting and data encryption, etc., are presented, based on the distinct supramolecular cross-link-regulated photoluminescent phenomena, especially the solid-state emission. Finally, a brief outlook is given, highlighting the currently existing problems and development direction of supramolecular cross-link-regulated emission in PCDs.
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Affiliation(s)
- Tanglue Feng
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry , Jilin University , Changchun 130012 , P. R. China
| | - Shoujun Zhu
- Laboratory of Molecular Imaging and Nanomedicine, National Institute of Biomedical Imaging and Bioengineering , National Institutes of Health , 35 Convent Drive , Bethesda , Maryland 20892 , United States
| | - Qingsen Zeng
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry , Jilin University , Changchun 130012 , P. R. China
| | - Siyu Lu
- College of Chemistry and Molecular Engineering , Zhengzhou University , 100 Kexue Road , Zhengzhou 450001 , China
| | - Songyuan Tao
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry , Jilin University , Changchun 130012 , P. R. China
| | - Junjun Liu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry , Jilin University , Changchun 130012 , P. R. China
| | - Bai Yang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry , Jilin University , Changchun 130012 , P. R. China
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45
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Abstract
Carbon dots are an emerging class of carbon-based nanostructures produced by low-cost raw materials which exhibit a widely-tunable photoluminescence and a high quantum yield. The potential of these nanomaterials as a substitute of semiconductor quantum dots in optoelectronics and biomedicine is very high, however they need a customized chemistry to be integrated in host-guest systems or functionalized in core-shell structures. This review is focused on recent advances of the sol-gel chemistry applied to the C-dots technology. The surface modification, the fine tailoring of the chemical composition and the embedding into a complex nanostructured material are the main targets of combining sol-gel processing with C-dots chemistry. In addition, the synergistic effect of the sol-gel precursor combined with the C-dots contribute to modify the intrinsic chemo-physical properties of the dots, empowering the emission efficiency or enabling the tuning of the photoluminescence over a wide range of the visible spectrum.
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Affiliation(s)
- Luca Malfatti
- LMNT- Laboratory of Materials Science and Nanotechnology, CR-INSTM, Department of Chemistry and Pharmacy, Via Vienna 2, 07040, Sassari, University of Sassari, Italy
| | - Plinio Innocenzi
- LMNT- Laboratory of Materials Science and Nanotechnology, CR-INSTM, Department of Chemistry and Pharmacy, Via Vienna 2, 07040, Sassari, University of Sassari, Italy
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46
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Du Q, Zheng J, Wang J, Yang Y, Liu X. The synthesis of green fluorescent carbon dots for warm white LEDs. RSC Adv 2018; 8:19585-19595. [PMID: 35541015 PMCID: PMC9080646 DOI: 10.1039/c8ra02226g] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 05/23/2018] [Indexed: 12/24/2022] Open
Abstract
Green emissive carbon dots synthesized by solvothermal method is used for warm white light-emitting devices.
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Affiliation(s)
- Qin Du
- Key Laboratory of Interface Science and Engineering in Advanced Materials (Taiyuan University of Technology)
- Ministry of Education
- Taiyuan 030024
- China
- College of Chemistry and Chemical Engineering
| | - Jingxia Zheng
- Key Laboratory of Interface Science and Engineering in Advanced Materials (Taiyuan University of Technology)
- Ministry of Education
- Taiyuan 030024
- China
- Research Center of Advanced Materials Science and Technology
| | - Junli Wang
- Key Laboratory of Interface Science and Engineering in Advanced Materials (Taiyuan University of Technology)
- Ministry of Education
- Taiyuan 030024
- China
- Research Center of Advanced Materials Science and Technology
| | - Yongzhen Yang
- Key Laboratory of Interface Science and Engineering in Advanced Materials (Taiyuan University of Technology)
- Ministry of Education
- Taiyuan 030024
- China
- Research Center of Advanced Materials Science and Technology
| | - Xuguang Liu
- Key Laboratory of Interface Science and Engineering in Advanced Materials (Taiyuan University of Technology)
- Ministry of Education
- Taiyuan 030024
- China
- College of Materials Science and Engineering
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47
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Liu W, Xu S, Guan S, Liang R, Wei M, Evans DG, Duan X. Confined Synthesis of Carbon Nitride in a Layered Host Matrix with Unprecedented Solid-State Quantum Yield and Stability. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:1704376. [PMID: 29178148 DOI: 10.1002/adma.201704376] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 09/28/2017] [Indexed: 06/07/2023]
Abstract
Fluorescent carbon nanomaterials have drawn tremendous attention for their intriguing optical performances, but their employment in solid-state luminescent devices is rather limited as a result of aggregation-induced photoluminescence quenching. Herein, ultrathin carbon nitride (CN) is synthesized within the 2D confined region of layered double hydroxide (LDH) via triggering the interlayer condensation reaction of citric acid and urea. The resulting CN/LDH phosphor emits strong cyan light under UV-light irradiation with an absolute solid-state quantum yield (SSQY) of 95.9 ± 2.2%, which is, to the best of our knowledge, the highest value of carbon-based fluorescent materials ever reported. Furthermore, it exhibits a strong luminescence stability toward temperature, environmental pH, and photocorrosion. Both experimental studies and theoretical calculations reveal that the host-guest interactions between the rigid LDH matrix and interlayer carbon nitride give the predominant contribution to the unprecedented SSQY and stability. In addition, prospective applications of the CN/LDH material are demonstrated in both white light-emitting diodes and upconversion fluorescence imaging of cancer cells.
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Affiliation(s)
- Wendi Liu
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Simin Xu
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Shanyue Guan
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Ruizheng Liang
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Min Wei
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - David G Evans
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Xue Duan
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
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48
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Xu Q, Zhang M, Liu Y, Cai W, Yang W, He Z, Sun X, Luo Y, Liu F. Synthesis of multi-functional green fluorescence carbon dots and their applications as a fluorescent probe for Hg2+ detection and zebrafish imaging. NEW J CHEM 2018. [DOI: 10.1039/c8nj01639a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Green fluorescence carbon dots for mercury detection and zebrafish imaging.
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Affiliation(s)
- Quan Xu
- State Key Laboratory of Heavy Oil Processing
- China University of Petroleum (Beijing)
- Beijing
- China
| | - Miaoran Zhang
- State Key Laboratory of Heavy Oil Processing
- China University of Petroleum (Beijing)
- Beijing
- China
| | - Yao Liu
- Research Institute for New Materials Technology
- Chongqing University of Arts and Sciences
- Chongqing 402160
- China
| | - Wei Cai
- State Key Laboratory of Heavy Oil Processing
- China University of Petroleum (Beijing)
- Beijing
- China
| | - Wenjing Yang
- State Key Laboratory of Heavy Oil Processing
- China University of Petroleum (Beijing)
- Beijing
- China
| | - Ziying He
- State Key Laboratory of Heavy Oil Processing
- China University of Petroleum (Beijing)
- Beijing
- China
| | - Xiuli Sun
- Dalian Medical University
- Dalian
- China
| | - Yan Luo
- Department of Chemical Engineering
- West Virginia University
- Morgantown
- USA
| | - Fang Liu
- Department of Chemical Engineering
- University of Santa Barbara
- Santa Barbara
- USA
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Wang Z, Yuan F, Li X, Li Y, Zhong H, Fan L, Yang S. 53% Efficient Red Emissive Carbon Quantum Dots for High Color Rendering and Stable Warm White-Light-Emitting Diodes. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1702910. [PMID: 28758696 DOI: 10.1002/adma.201702910] [Citation(s) in RCA: 288] [Impact Index Per Article: 41.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Revised: 07/07/2017] [Indexed: 05/22/2023]
Abstract
Red emissive carbon quantum dots (R-CQDs) with quantum yield of 53% is successfully prepared. An ultraviolet (UV)-pumped CQD phosphors-based warm white light-emitting diode (WLED) is realized for the first time and achieves a color rendering index of 97. This work provides a new avenue for the exploration of low cost, environment-friendly, and high-performance CQD phosphors-based warm WLEDs.
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Affiliation(s)
- Zifei Wang
- Department of Chemistry, Beijing Normal University, Beijing, 100875, China
| | - Fanglong Yuan
- Department of Chemistry, Beijing Normal University, Beijing, 100875, China
| | - Xiaohong Li
- Department of Chemistry, Beijing Normal University, Beijing, 100875, China
| | - Yunchao Li
- Department of Chemistry, Beijing Normal University, Beijing, 100875, China
| | - Haizheng Zhong
- Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Louzhen Fan
- Department of Chemistry, Beijing Normal University, Beijing, 100875, China
| | - Shihe Yang
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
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Choi Y, Jo S, Chae A, Kim YK, Park JE, Lim D, Park SY, In I. Simple Microwave-Assisted Synthesis of Amphiphilic Carbon Quantum Dots from A 3/B 2 Polyamidation Monomer Set. ACS APPLIED MATERIALS & INTERFACES 2017; 9:27883-27893. [PMID: 28742324 DOI: 10.1021/acsami.7b06066] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Highly fluorescent and amphiphilic carbon quantum dots (CQDs) were prepared by microwave-assisted pyrolysis of citric acid and 4,7,10-trioxa-1,13-tridecanediamine (TTDDA), which functioned as an A3 and B2 polyamidation type monomer set. Gram quantities of fluorescent CQDs were easily obtained within 5 min of microwave heating using a household microwave oven. Because of the dual role of TTDDA, both as a constituting monomer and as a surface passivation agent, TTDDA-based CQDs showed a high fluorescence quantum yield of 29% and amphiphilic solubility in various polar and nonpolar solvents. These properties enable the wide application of TTDDA-based CQDs as nontoxic bioimaging agents, nanofillers for polymer composites, and down-converting layers for enhancing the efficiency of Si solar cells.
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Affiliation(s)
- Yujin Choi
- Department of IT Convergence (Brain Korea PLUS 21), ‡Department of Polymer Science and Engineering, §Department of Chemical and Biological Engineering, and ∥Department of Electronic Engineering, Korea National University of Transportation , Chungju 27909, Republic of Korea
| | - Seongho Jo
- Department of IT Convergence (Brain Korea PLUS 21), ‡Department of Polymer Science and Engineering, §Department of Chemical and Biological Engineering, and ∥Department of Electronic Engineering, Korea National University of Transportation , Chungju 27909, Republic of Korea
| | - Ari Chae
- Department of IT Convergence (Brain Korea PLUS 21), ‡Department of Polymer Science and Engineering, §Department of Chemical and Biological Engineering, and ∥Department of Electronic Engineering, Korea National University of Transportation , Chungju 27909, Republic of Korea
| | - Young Kwang Kim
- Department of IT Convergence (Brain Korea PLUS 21), ‡Department of Polymer Science and Engineering, §Department of Chemical and Biological Engineering, and ∥Department of Electronic Engineering, Korea National University of Transportation , Chungju 27909, Republic of Korea
| | - Jeong Eun Park
- Department of IT Convergence (Brain Korea PLUS 21), ‡Department of Polymer Science and Engineering, §Department of Chemical and Biological Engineering, and ∥Department of Electronic Engineering, Korea National University of Transportation , Chungju 27909, Republic of Korea
| | - Donggun Lim
- Department of IT Convergence (Brain Korea PLUS 21), ‡Department of Polymer Science and Engineering, §Department of Chemical and Biological Engineering, and ∥Department of Electronic Engineering, Korea National University of Transportation , Chungju 27909, Republic of Korea
| | - Sung Young Park
- Department of IT Convergence (Brain Korea PLUS 21), ‡Department of Polymer Science and Engineering, §Department of Chemical and Biological Engineering, and ∥Department of Electronic Engineering, Korea National University of Transportation , Chungju 27909, Republic of Korea
| | - Insik In
- Department of IT Convergence (Brain Korea PLUS 21), ‡Department of Polymer Science and Engineering, §Department of Chemical and Biological Engineering, and ∥Department of Electronic Engineering, Korea National University of Transportation , Chungju 27909, Republic of Korea
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