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Yang YQ, Zhang Y, Liu Y, Lin F, Zhang H. White-Light Emission from a Host-Guest Composite between Carboxylatopillar[5]arene-Modified N-Doped Carbon Dots and Rhodamine 6G for Rutin Detection. ACS OMEGA 2024; 9:14429-14435. [PMID: 38559962 PMCID: PMC10975606 DOI: 10.1021/acsomega.4c00249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 02/14/2024] [Accepted: 02/22/2024] [Indexed: 04/04/2024]
Abstract
The construction of tunable white-light-emitting materials has garnered increasing attention in the scientific community. In this study, N-doped carbon dots (N-CDs) were surface-modified with carboxylatopillar[5]arene (CP[5]) using an EDC-NHS coupling reaction to create CCDs. CCDs were then conjugated with rhodamine 6G (R6G) through host-guest interactions to fabricate the CCDs-R6G composites. These composites produced two-color fluorescence emission peaks at 447 and 557 nm when excited by a wavelength of 340 nm. Excitingly, white-light emission (0.28, 0.30) can be readily achieved by varying the R6G concentration. To further explore potential applications, a new detection method for rutin (RT) based on the inner filter effect (IFE) was developed. Experimental results verify the practicality and reliability of the fluorescence sensor based on CCDs-R6G composites for RT detection in real samples.
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Affiliation(s)
- Yun-qiong Yang
- School of Environmental and
Chemical Engineering, Jiangsu Ocean University, Lianyungang 222005, P. R. China
| | - Yuan Zhang
- School of Environmental and
Chemical Engineering, Jiangsu Ocean University, Lianyungang 222005, P. R. China
| | - Yang Liu
- School of Environmental and
Chemical Engineering, Jiangsu Ocean University, Lianyungang 222005, P. R. China
| | - Feier Lin
- School of Environmental and
Chemical Engineering, Jiangsu Ocean University, Lianyungang 222005, P. R. China
| | - Hao Zhang
- School of Environmental and
Chemical Engineering, Jiangsu Ocean University, Lianyungang 222005, P. R. China
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2
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Li W, Wu M, Jiang H, Yang L, Liu C, Gong X. Carbon dots/ZnO quantum dots composite-based white phosphors for white light-emitting diodes. Chem Commun (Camb) 2022; 58:1910-1913. [PMID: 35015000 DOI: 10.1039/d1cc06180a] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
A facile synthetic approach to prepare environmentally friendly white fluorescent carbon dots (CDs)/ZnO quantum dots (QDs) composites through electrostatic force is described. This method can be used for fabrication of high-performance white light-emitting diodes (WLEDs). The fluorescence emission spectra of WLED devices covered a range from 425 nm to 750 nm. WLEDs had a CIE chromaticity coordinate of (0.30, 0.34) and a color temperature of 7093 K.
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Affiliation(s)
- Wenjing Li
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China.
| | - Min Wu
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Hang Jiang
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China.
| | - Longhui Yang
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China.
| | - Chao Liu
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China.
| | - Xiao Gong
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China.
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Biswas A, Kar U, Jana NR. Cytotoxicity of ZnO Nanoparticle Under Dark via Oxygen Vacancy Dependent Reactive Oxygen Species Generation. Phys Chem Chem Phys 2022; 24:13965-13975. [DOI: 10.1039/d2cp00301e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Antimicrobial and cytotoxic effect of zinc oxide nanomaterials are popularly thought due to zinc ion leaching, but the exact mechanism of cytotoxicity is controversial and not fully understood. Recent works...
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Ahanger FA, Nazir N, Lone MS, Afzal S, Dar AA. Emission Color Tuning and White Light Generation from a Trimolecular Cocktail in Cationic Micellar System with Promising Applicability in the Anticounterfeiting Technology. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:7730-7740. [PMID: 34128682 DOI: 10.1021/acs.langmuir.1c00785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The development of photoluminescent (PL) systems, displaying multiple stimuli-responsive emission color tuning, has been the pressing priority in the recent times due to their huge role in contemporary lighting and anticounterfeiting technologies. Acknowledging this importance, we present a simple and eco-friendly PL system showing emission color tuning in response to different stimuli, that is, the composition of the system, pH, excitation wavelength, and the temperature with the plus point of getting significantly pure white light emission (WLE). The novel system is fabricated from the aqueous mixture of three organic fluorophores, umbelliferone (UMB), fluorescein (FLU), and Rhodamine-B (RB). By varying the fluorophore composition in the mixture at pH 12, nearly pure WLE with a Commission Internationale d'Eclairage (CIE) 1931 profile of (0.33, 0.33) was obtained at the excitation wavelength of 365 nm, the sustainability of which was ensured by employing the micellar self-assemblies of tetradecyltrimethylammonium bromide (TTAB) molecules. Similar WLE was obtained under mildly acidic conditions (pH 6) but at the excitation wavelength of 330 nm. By proper tuning of pH and the wavelengths of the system to use it as a fluorescent ink, we found a remarkable and highly applicable phenomenon observed for the first time, that is, triple-mode orthogonal emission color tuning with white light ON/OFF switching. We validate the vital applicability of this phenomenon in protecting the authenticity of the document with its hard-to-counterfeit property. The applicability of this phenomenon is also explored by synthesizing PVA-based fluorescent films from the tri-fluorophore mixture. Moreover, the emission color of the PL system was explored lucidly for its temperature dependence owing to the thermal responsiveness of RB emission, where the PL system proves to be a full-color RGB system.
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Affiliation(s)
- Firdaus Ahmad Ahanger
- Soft Matter Research Group, Physical Chemistry Section, Department of Chemistry, University of Kashmir, Hazratbal, Srinagar 190006, J&K, India
| | - Nighat Nazir
- Department of Chemistry, Islamia College of Science and Commerce, Hawal, Srinagar 190002, J&K, India
| | - Mohd Sajid Lone
- Soft Matter Research Group, Physical Chemistry Section, Department of Chemistry, University of Kashmir, Hazratbal, Srinagar 190006, J&K, India
| | - Saima Afzal
- Soft Matter Research Group, Physical Chemistry Section, Department of Chemistry, University of Kashmir, Hazratbal, Srinagar 190006, J&K, India
| | - Aijaz Ahmad Dar
- Soft Matter Research Group, Physical Chemistry Section, Department of Chemistry, University of Kashmir, Hazratbal, Srinagar 190006, J&K, India
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Singh P, Singh RK, Kumar R. Journey of ZnO quantum dots from undoped to rare-earth and transition metal-doped and their applications. RSC Adv 2021; 11:2512-2545. [PMID: 35424186 PMCID: PMC8693809 DOI: 10.1039/d0ra08670c] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Accepted: 12/05/2020] [Indexed: 12/20/2022] Open
Abstract
Currently, developments in the field of quantum dots (QDs) have attracted researchers worldwide. A large variety of QDs have been discovered in the few years, which have excellent optoelectronic, antibacterial, magnetic, and other properties. However, ZnO is the single known material that can exist in the quantum state and can hold all the above properties. There is a lot of work going on in this field and we will be shorthanded if we do not accommodate this treasure at one place. This manuscript will prove to be a milestone in this noble cause. Having a tremendous potential, there is a developing enthusiasm toward the application of ZnO QDs in diverse areas. Sol-gel method being the simplest is the widely-favored synthetic method. Synthesis via this method is largely affected by a number of factors such as the reaction temperature, duration of the reaction, type of solvent, pH of the solution, and the precipitating agent. Doping enhances the optical, magnetic, anti-bacterial, anti-microbial, and other properties of ZnO QDs. However, doping elements reside mostly on the surface of the QDs. The presence of doping elements inside the core is still a major challenge for doping techniques. In this review article, we have focused on pure, rare-earth, and transition metal-doped ZnO QD properties, and the various synthetic processes and applications. Quantum confinement effect is present in nearly every aspect of the QDs. The effect of quantum confinement has also been summarized in this manuscript. Furthermore, the doping of rare earth elements and transition metal, synthetic methods for different organic molecule-capped ZnO QDs, mechanisms for reactive oxygen species (ROS) generation, drug delivery system for cancer treatment, and many more application are discussed in this paper.
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Affiliation(s)
- Pushpendra Singh
- Department of Physics, Dr Harisingh Gour Central University Sagar 470003 M. P. India +91 9425635731
| | - Rajan Kumar Singh
- Department of Physics, Dr Harisingh Gour Central University Sagar 470003 M. P. India +91 9425635731
- Department of Chemical Engineering, National Taiwan University Taipei Taiwan ROC
| | - Ranveer Kumar
- Department of Physics, Dr Harisingh Gour Central University Sagar 470003 M. P. India +91 9425635731
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Nandimath M, Bhajantri RF, Naik J. Spectroscopic and color chromaticity analysis of rhodamine 6G dye-doped PVA polymer composites for color tuning applications. Polym Bull (Berl) 2020. [DOI: 10.1007/s00289-020-03332-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Bhandari S, Roy S, Pramanik S, Chattopadhyay A. Chemical Reactions Involving the Surface of Metal Chalcogenide Quantum Dots. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:14399-14413. [PMID: 31288518 DOI: 10.1021/acs.langmuir.9b01285] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
This invited feature article focuses on the chemical reactions involving the surface ions of colloidal quantum dots (Qdots). Emphasis is placed on ion-exchange, redox, and complexation reactions. The pursuit of reactions involving primarily the cations on the surface results in changes in the optical properties of the Qdots and also may confer new properties owing to the newly formed surface species. For example, the cation-exchange reaction, leading to systematic removal of the cations present on the as-synthesized Qdots, enhances the photoluminescence quantum yield. On the other hand, redox reactions, involving the dopant cations in the Qdots, could not only modulate the photoluminescence quantum yield but also give rise to new emission not present in the as-synthesized Qdots. Importantly, the cations present on the surface could be made to react with external organic ligands to form inorganic complexes, thus providing a new species defined as the quantum dot complex (QDC). In the QDC, the properties of Qdots and the inorganic complex are not only present but also enhanced. Furthermore, by varying reaction conditions such as the concentrations of the species and using a mixture of ligands, the properties could be further tuned and multifunctionalization of the Qdot could be achieved. Thus, chemical, magnetic, and optical properties could be simultaneously conferred on the same Qdot. This has helped in externally controlled bioimaging, white light generation involving individual quantum dots, and highly sensitive molecular sensing. Understanding the species (i.e., the newly formed inorganic complex) on the surface of the Qdot and its chemical reactivity provide unique options for futuristic technological applications involving a combination of an inorganic complex and a Qdot.
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Affiliation(s)
- Satyapriya Bhandari
- Department of Chemistry and Centre for Nanotechnology , Indian Institute of Technology Guwahati , Guwahati, Assam 781039 , India
| | - Shilaj Roy
- Department of Chemistry and Centre for Nanotechnology , Indian Institute of Technology Guwahati , Guwahati, Assam 781039 , India
| | - Sabyasachi Pramanik
- Department of Chemistry and Centre for Nanotechnology , Indian Institute of Technology Guwahati , Guwahati, Assam 781039 , India
| | - Arun Chattopadhyay
- Department of Chemistry and Centre for Nanotechnology , Indian Institute of Technology Guwahati , Guwahati, Assam 781039 , India
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Roy S, Pramanik S, Mandal P, Manna M, Bhandari S. Hue- and Chromaticity-Based Exploration of Surface Complexation-Induced Tunable Emission from Non-Luminescent Quantum Dots. Chem Asian J 2019; 14:3823-3829. [PMID: 31532886 DOI: 10.1002/asia.201901107] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 09/16/2019] [Indexed: 12/19/2022]
Abstract
Herein we report the use of a hue parameter of HSV (Hue, Saturation and Value) color space-in combination with chromaticity color coordinates-for exploring the complexation-induced luminescence color changes, ranging from blue to green to yellow to white, from a non-luminescent Fe-doped ZnS quantum dot (QD). Importantly, the surface complexation reaction helped a presynthesized non-luminescent Fe-doped ZnS QD to glow with different luminescence colors (such as blue, cyan, green, greenish-yellow, yellow) by virtue of the formation of various luminescent inorganic complexes (using different external organic ligands), while the simultaneous blue- and yellow-emitting complex formation on the surface of non-luminescent Fe-doped ZnS QD led to the generation of white light emission, with a hue mean value of 85 and a chromaticity of (0.28,0.33). Furthermore, the surface complexation-assisted incorporation of luminescence properties to a non-luminescent QD not only overcomes their restricted luminescence-based applications such as light-emitting, biological and sensing applications but also bring newer avenues towards unravelling the surface chemistry between QDs and inorganic complexes and the advantage of having an inorganic complex with QD for their aforementioned useful applications.
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Affiliation(s)
- Shilaj Roy
- Centre for Nanotechnology, Indian Institute of Technology Guwahati, Guwahati-, 781039, Assam, India.,Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-, 781039, Assam, India
| | - Sabyasachi Pramanik
- Centre for Nanotechnology, Indian Institute of Technology Guwahati, Guwahati-, 781039, Assam, India.,Department of Chemistry, National Institute of Technology Sikkim, Sikkim-, 737139, India
| | - Prasenjit Mandal
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-, 781039, Assam, India
| | - Mihir Manna
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-, 781039, Assam, India
| | - Satyapriya Bhandari
- Centre for Nanotechnology, Indian Institute of Technology Guwahati, Guwahati-, 781039, Assam, India.,Centre for Nano and Material Sciences, Jain University, Bangalore, 562112, India.,Physics Discipline, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar, 382355, India
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9
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Bhandari S, Mondal D, Nataraj SK, Balakrishna RG. Biomolecule-derived quantum dots for sustainable optoelectronics. NANOSCALE ADVANCES 2019; 1:913-936. [PMID: 36133200 PMCID: PMC9473190 DOI: 10.1039/c8na00332g] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Accepted: 12/27/2018] [Indexed: 05/06/2023]
Abstract
The diverse chemical functionalities and wide availability of biomolecules make them essential and cost-effective resources for the fabrication of zero-dimensional quantum dots (QDs, also known as bio-dots) with extraordinary properties, such as high photoluminescence quantum yield, tunable emission, photo and chemical stability, excellent aqueous solubility, scalability, and biocompatibility. The additional advantages of scalability, tunable optical features and presence of heteroatoms make them suitable alternatives to conventional metal-based semiconductor QDs in the field of bioimaging, biosensing, drug delivery, solar cells, photocatalysis, and light-emitting devices. Furthermore, a recent focus of the scientific community has been on QD-based sustainable optoelectronics due to the primary concern of partially mitigating the current energy demand without affecting the environment. Hence, it is noteworthy to focus on the sustainable optoelectronic applications of biomolecule-derived QDs, which have tunable optical features, biocompatibility and the scope of scalability. This review addresses the recent advances in the synthesis, properties, and optoelectronic applications of biomolecule-derived QDs (especially, carbon- and graphene-based QDs (C-QDs and G-QDs, respectively)) and discloses their merits and disadvantages, challenges and future prospects in the field of sustainable optoelectronics. In brief, the current review focuses on two major issues: (i) the advantages of two families of carbon nanomaterials (i.e. C-QDs and G-QDs) derived from biomolecules of various categories, for instance (a) plant extracts including fruits, flowers, leaves, seeds, peels, and vegetables; (b) simple sugars and polysaccharides; (c) different amino acids and proteins; (d) nucleic acids, bacteria and fungi; and (e) biomasses and their waste and (ii) their applications as light-emitting diodes (LEDs), display systems, solar cells, photocatalysts and photo detectors. This review will not only bring a new paradigm towards the construction of advanced, sustainable and environment-friendly optoelectronic devices using natural resources and waste, but also provides critical insights to inspire researchers ranging from material chemists and chemical engineers to biotechnologists to search for exciting developments of this field and consequently make an advance step towards future bio-optoelectronics.
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Affiliation(s)
- Satyapriya Bhandari
- Centre for Nano and Material Sciences, JAIN (Deemed to be University) Jain Global Campus Bangalore 562112 India
| | - Dibyendu Mondal
- Centre for Nano and Material Sciences, JAIN (Deemed to be University) Jain Global Campus Bangalore 562112 India
| | - S K Nataraj
- Centre for Nano and Material Sciences, JAIN (Deemed to be University) Jain Global Campus Bangalore 562112 India
| | - R Geetha Balakrishna
- Centre for Nano and Material Sciences, JAIN (Deemed to be University) Jain Global Campus Bangalore 562112 India
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Pramanik S, Bhandari S, Pan UN, Roy S, Chattopadhyay A. A White Light-Emitting Quantum Dot Complex for Single Particle Level Interaction with Dopamine Leading to Changes in Color and Blinking Profile. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1800323. [PMID: 29665212 DOI: 10.1002/smll.201800323] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Revised: 02/19/2018] [Indexed: 06/08/2023]
Abstract
The interaction of the neurotransmitter dopamine is reported with a single particle white light-emitting (WLE) quantum dot complex (QDC). The QDC is composed of yellow emitting ZnO quantum dots (Qdots) and blue emitting Zn(MSA)2 complex (MSA = N-methylsalicylaldimine) synthesized on their surfaces. Sensing is achieved by the combined changes in the visual luminescence color from white to blue, chromaticity color coordinates from (0.31, 0.33) to (0.24, 0.23) and the ratio of the exponents (αon /αoff ) of on/off probability distribution (from 0.24 to 3.21) in the blinking statistics of WLE QDC. The selectivity of dopamine toward ZnO Qdots, present in WLE QDC, helps detect ≈13 dopamine molecules per Qdot. Additionally, the WLE QDC exhibits high sensitivity, with a limit of detection of 3.3 × 10-9 m (in the linear range of 1-100 × 10-9 m) and high selectivity in presence of interfering biological species. Moreover, the single particle on-off bilking statistics based detection strategy may provide an innovative way for ultrasensitive detection of analytes.
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Affiliation(s)
- Sabyasachi Pramanik
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India
| | - Satyapriya Bhandari
- Centre for Nanotechnology, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India
| | - Uday Narayan Pan
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India
| | - Shilaj Roy
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India
| | - Arun Chattopadhyay
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India
- Centre for Nanotechnology, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India
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