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Patil AB, Chaudhary PL, Adhyapak PV. Carbon dots-cadmium sulfide quantum dots nanocomposite for 'on-off' fluorescence sensing of chromium(vi) ions. RSC Adv 2024; 14:12923-12934. [PMID: 38650690 PMCID: PMC11033546 DOI: 10.1039/d4ra00436a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Accepted: 04/15/2024] [Indexed: 04/25/2024] Open
Abstract
This work involves fluorescent probe which is composed of carbon dots (CD) and cadmium sulfide quantum dots (CdS QD) for the sensitive and selective fluorescence detection of chromium(vi) ions. The blue fluorescent carbon dots were synthesized by hydrothermal method from natural precursor apricot. The carbon dots-cadmium sulfide quantum dots (CD-CdS QD) nanocomposite was synthesized and all as-synthesized products were characterized using different characterization techniques. It showed white fluorescence under UV light which was quenched selectively in the presence of chromium(vi) ions due to the inner filter effect (IFE). The linear decrease in the white fluorescence was observed in the concentration range 2-120 μM of chromium(vi) ions with the limit of detection 2.07 μM. This is novel probe for the sensitive, selective and rapid detection of chromium(vi) ions.
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Affiliation(s)
- Anisha B Patil
- Centre for Materials for Electronics Technology (C-MET), (Scientific Society, Ministry of Electronics & Information Technology (MeitY), Govt. of India) Panchawati, off Pashan Road Pune 411008 India +91-20-25898180 +91-20-25899273
| | - Pooja L Chaudhary
- Centre for Materials for Electronics Technology (C-MET), (Scientific Society, Ministry of Electronics & Information Technology (MeitY), Govt. of India) Panchawati, off Pashan Road Pune 411008 India +91-20-25898180 +91-20-25899273
| | - Parag V Adhyapak
- Centre for Materials for Electronics Technology (C-MET), (Scientific Society, Ministry of Electronics & Information Technology (MeitY), Govt. of India) Panchawati, off Pashan Road Pune 411008 India +91-20-25898180 +91-20-25899273
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2
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Zetes M, Hada AM, Todea M, Gaina LI, Astilean S, Craciun AM. Dual-emissive solid-state histidine-stabilized gold nanoclusters for applications in white-light generation. NANOSCALE ADVANCES 2023; 5:5810-5818. [PMID: 37881697 PMCID: PMC10597560 DOI: 10.1039/d3na00555k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 09/13/2023] [Indexed: 10/27/2023]
Abstract
The majority of present-day white-light emitting devices (WLEDs) are built upon the use of rare-earth elements, which have a short supply, are expensive and can become extremely toxic. Thus, in this work, we synthesized an eco-friendly, efficient and cheap white-light emitting material (WLEM) based on solid-state histidine-stabilized gold nanoclusters (His-AuNCs), obtained through the lyophilization of microwave-synthesized photoluminescent His-AuNCs. Their morphological and structural characterization was followed by thorough evaluation of their intrinsic solid-state photoluminescence properties via steady-state and time-resolved fluorescence spectroscopy and microscopy, at multiple excitation wavelengths. A white-light emission was observed under UV light excitation due to the two-band broad emission, with maxima at 475 and 520 nm, covering a large area of the visible spectrum. In order to evaluate the purity of the white-light emission we calculated the chromaticity coordinates, at different wavelengths, and displayed them on a CIE (Commision Internationale d'Eclairage) diagram. An excellent value of (0.36, 0.33) was found at 420 nm excitation, which falls within the range of pure white-light emission. Moreover, the His-AuNCs show great photo- and thermo-stability, thus proving their ability to perform as a reliable WLEM with potential use in the development of eco-friendly WLEDs.
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Affiliation(s)
- Markus Zetes
- Nanobiophotonics and Laser Microspectroscopy Center, Interdisciplinary Research Institute in Bio-Nano-Sciences, Babes-Bolyai University 42 T. Laurian Str. 400271 Cluj-Napoca Romania
- Faculty of Physics, Babes-Bolyai University 1 M. Kogalniceanu Str. 400084 Cluj-Napoca Romania
| | - Alexandru-Milentie Hada
- Nanobiophotonics and Laser Microspectroscopy Center, Interdisciplinary Research Institute in Bio-Nano-Sciences, Babes-Bolyai University 42 T. Laurian Str. 400271 Cluj-Napoca Romania
- Faculty of Physics, Babes-Bolyai University 1 M. Kogalniceanu Str. 400084 Cluj-Napoca Romania
| | - Milica Todea
- Nanostructured Materials and Bio-Nano-Interfaces Center, Interdisciplinary Research Institute in Bio-Nano-Sciences, Babes-Bolyai University 42 T. Laurian Str. 400271 Cluj-Napoca Romania
- Department of Molecular Sciences, Faculty of Medicine, Iuliu Haţieganu University of Medicine and Pharmacy Cluj-Napoca 400349 Romania
| | - Luiza Ioana Gaina
- Research Center on Fundamental and Applied Heterochemistry, Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University 11 A. Janos Str. 400028 Cluj-Napoca Romania
| | - Simion Astilean
- Nanobiophotonics and Laser Microspectroscopy Center, Interdisciplinary Research Institute in Bio-Nano-Sciences, Babes-Bolyai University 42 T. Laurian Str. 400271 Cluj-Napoca Romania
- Faculty of Physics, Babes-Bolyai University 1 M. Kogalniceanu Str. 400084 Cluj-Napoca Romania
| | - Ana-Maria Craciun
- Nanobiophotonics and Laser Microspectroscopy Center, Interdisciplinary Research Institute in Bio-Nano-Sciences, Babes-Bolyai University 42 T. Laurian Str. 400271 Cluj-Napoca Romania
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Zhou J, Zou C, Huo D, Chu C, Liu S, Yang M, Zhang S, Wang X, Hou C. Synthesis of N,Si co-doped carbon dots to establish a fluorescent sensor for Hg(II) detection with triple signal output. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2023; 15:5181-5189. [PMID: 37767981 DOI: 10.1039/d3ay01344h] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/29/2023]
Abstract
Mercury is a heavy metal with extreme toxicity. Thus, it is of significance to develop an effective method for mercury ion detection with high performance. In this study, carbon dots doped with nitrogen and silicon (N,Si/CQDs) were successfully prepared from folic acid and N-[3-(trimethoxysily)propyl]-ethylenediamine. The N,Si/CQDs show an obvious cyan fluorescence of 460 nm with the radiation of 350 nm. The existence of mercury ions induces the fluorescence quenching of N,Si/CQDs due to photoinduced electron transfer, which was applied for the sensitive sensing of Hg(II). More importantly, the practical application of the N,Si/CQD probe was confirmed by measurements of Hg(II) in real samples of lake water, sorghum and rice. In addition, the N,Si/CQD nanoprobe was integrated on a sensing strip for specific detection of Hg(II). Quantitative measurement of Hg(II) was realized by the outstanding linearity between the diameter (or fluorescence intensity) of the fluorescence quenching ring and the concentration of mercury ions. The sensor shows potential for rapid detection with a triple signal readout on-site and represents a larger step towards practical applications.
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Affiliation(s)
- Jun Zhou
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, Bioengineering College of Chongqing University, Chongqing 400044, PR China.
- National Engineering Research Center of Solid-State Brewing, Luzhou Laojiao Group Co. Ltd., Luzhou 646000, PR China.
| | - Chengyue Zou
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, Bioengineering College of Chongqing University, Chongqing 400044, PR China.
| | - Danqun Huo
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, Bioengineering College of Chongqing University, Chongqing 400044, PR China.
| | - Chengxiang Chu
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, Bioengineering College of Chongqing University, Chongqing 400044, PR China.
| | - Shasha Liu
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, Bioengineering College of Chongqing University, Chongqing 400044, PR China.
| | - Mei Yang
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, Bioengineering College of Chongqing University, Chongqing 400044, PR China.
| | - Suyi Zhang
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, Bioengineering College of Chongqing University, Chongqing 400044, PR China.
- National Engineering Research Center of Solid-State Brewing, Luzhou Laojiao Group Co. Ltd., Luzhou 646000, PR China.
| | - Xianfeng Wang
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, Bioengineering College of Chongqing University, Chongqing 400044, PR China.
- Wuxi School of Medicine, Jiangnan University, Wuxi 214122, PR China.
| | - Changjun Hou
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, Bioengineering College of Chongqing University, Chongqing 400044, PR China.
- Chongqing Key Laboratory of Bio-perception & Intelligent Information Processing, School of Microelectronics and Communication Engineering, Chongqing University, Chongqing, 400044, PR China
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Hourdakis E, Bardakas A, Segkos A, Tsilivaki S, Gardelis S, Tsamis C. Tunable and white light photoluminescence from ZnO on porous Si with the addition of carbon quantum dots. NANOTECHNOLOGY 2023; 34:455202. [PMID: 37536299 DOI: 10.1088/1361-6528/aced0f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 08/03/2023] [Indexed: 08/05/2023]
Abstract
In this work we demonstrate a two-pixel solid-state photoluminescent device able to emit white light covering the entire visible spectrum from 380 nm up to 800 nm. The device is based on a combination of porous Si, hydrothermally grown ZnO and carbon quantum dots, in a two-pixel formation, with porous Si and ZnO acting independently while the carbon quantum dots are deposited on top of the entire device. All processing is done using standard Si processing techniques. Moreover, the device design allows for tunability of the emitted spectrum simply by choosing the desired combination of the materials. Overall, the demonstrated device is low cost, environmentally safe and biocompatible.
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Affiliation(s)
- E Hourdakis
- Institute of Nanoscience and Nanotechnology, NCSR Demokritos, Athens, Greece
| | - A Bardakas
- Institute of Nanoscience and Nanotechnology, NCSR Demokritos, Athens, Greece
| | - A Segkos
- Institute of Nanoscience and Nanotechnology, NCSR Demokritos, Athens, Greece
| | - S Tsilivaki
- Institute of Nanoscience and Nanotechnology, NCSR Demokritos, Athens, Greece
- Department of Physics, National Kapodistrian University of Athens, Athens, Greece
| | - S Gardelis
- Department of Physics, National Kapodistrian University of Athens, Athens, Greece
| | - C Tsamis
- Institute of Nanoscience and Nanotechnology, NCSR Demokritos, Athens, Greece
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Mohandoss S, Ahmad N, Khan MR, Velu KS, Palanisamy S, You S, Kumar AJ, Lee YR. Nitrogen and sulfur co-doped photoluminescent carbon dots for highly selective and sensitive detection of Ag + and Hg 2+ ions in aqueous media: Applications in bioimaging and real sample analysis. ENVIRONMENTAL RESEARCH 2023; 228:115898. [PMID: 37054837 DOI: 10.1016/j.envres.2023.115898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 03/17/2023] [Accepted: 04/11/2023] [Indexed: 05/16/2023]
Abstract
In this study, we report the synthesis of photoluminescent (PL) nitrogen (N) and sulfur (S) co-doped carbon dots (NS-CDs) from nitazoxanide and 3-mercaptopropionic acid as a precursors via a one-pot hydrothermal methods. N and S co-doped materials allows more active sites in the CDs surface resulting in an enhancement of their PL properties. NS-CDs show bright blue PL, excellent optical properties, good water solubility, and a high quantum yield (QY) of 32.1%. The as-prepared NS-CDs were confirmed by UV-Visible, photoluminescence, FTIR, XRD and TEM analysis. An optimized excitation at 345 nm, the NS-CDs exhibited strong PL emission at 423 nm with an average size of 3.53 ± 0.25 nm. Under optimized conditions, the NS-CDs PL probe shows high selectivity with Ag+/Hg2+ ions detected, while other cations no significant changes the PL signal. The PL intensity of NS-CDs linearly quenching and enhancement with Ag+ and Hg2+ ions from 0 to 50 × 10-6 M, with the detection limit of 2.15 × 10-6 M and 6.77 × 10-7 M (S/N = 3). More interestingly, as-synthesized NS-CDs shows a strong binding to Ag+/Hg2+ ions with the PL quenching and enhancement to precise and quantitative detection of Ag+/Hg2+ ions in living cells. The proposed system was effectively utilized for the sensing of Ag+/Hg2+ ions in real samples resulting in high sensitivity and good recoveries (98.4-109.7%).
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Affiliation(s)
- Sonaimuthu Mohandoss
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea.
| | - Naushad Ahmad
- Department of Chemistry, College of Science, King Saud University, Riyadh, 11451, Kingdom of Saudi Arabia
| | - Mohammad Rizwan Khan
- Department of Chemistry, College of Science, King Saud University, Riyadh, 11451, Kingdom of Saudi Arabia
| | - Kuppu Sakthi Velu
- SSN, Research Centre, SSN College of Engineering, Anna University, Tamilnadu, India
| | - Subramanian Palanisamy
- Department of Marine Food Science and Technology, Gangneung-Wonju National University, 120 Gangneungdaehangno, Gangneung, Gangwon, 25457, Republic of Korea
| | - SangGuan You
- Department of Marine Food Science and Technology, Gangneung-Wonju National University, 120 Gangneungdaehangno, Gangneung, Gangwon, 25457, Republic of Korea
| | | | - Yong Rok Lee
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea.
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Atulbhai SV, Singhal RK, Basu H, Kailasa SK. Perspectives of different colour-emissive nanomaterials in fluorescent ink, LEDs, cell imaging, and sensing of various analytes. LUMINESCENCE 2023; 38:867-895. [PMID: 35501299 DOI: 10.1002/bio.4272] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Revised: 03/19/2022] [Accepted: 04/18/2022] [Indexed: 11/06/2022]
Abstract
In the past 2 decades, multicolour light-emissive nanomaterials have gained significant interest in chemical and biological sciences because of their unique optical properties. These materials have drawn much attention due to their unique characteristics towards various application fields. The development of novel nanomaterials has become the pinpoint for different application areas. In this review, the recent progress in the area of multicolour-emissive nanomaterials is summarized. The different emissions (white, orange, green, red, blue, and multicolour) of nanostructure materials (metal nanoclusters, quantum dots, carbon dots, and rare earth-based nanomaterials) are briefly discussed. The potential applications of different colour-emissive nanomaterials in the development of fluorescent inks, light-emitting diodes, cell imaging, and sensing devices are briefly summarized. Finally, the future perspectives of multicolour-emissive nanomaterials are discussed.
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Affiliation(s)
- Sadhu Vibhuti Atulbhai
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology, Surat, Gujarat, India
| | - Rakesh Kumar Singhal
- Analytical Chemistry Division, Bhabha Atomic Research Center, Trombay, Mumbai, India
| | - Hirakendu Basu
- Analytical Chemistry Division, Bhabha Atomic Research Center, Trombay, Mumbai, India
| | - Suresh Kumar Kailasa
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology, Surat, Gujarat, India
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7
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Srivastava P, Verma VK, Sabbarwal S, Singh M, Sahoo K, Koch B, Kumar M. White light-emitting, biocompatible, water-soluble metallic magnesium nanoclusters for bioimaging applications. NANOTECHNOLOGY 2022; 34:105702. [PMID: 36537740 DOI: 10.1088/1361-6528/aca545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 11/23/2022] [Indexed: 06/17/2023]
Abstract
Ultra-small (1.6 nm), water-soluble, white light-emitting (WLE), highly stable (∼8 months) BSA templated metallic (Mg0) nanoclusters (fluorescent magnesium nanoclusters = FMNCs) is developed using the green and facile route. Synthesis was facilitated by the reduction of magnesium salt, where template bovine serum albumin is utilized as a reducing agent and ascorbic acid act as a capping agent to impart stability in water, thereby obtaining stabilized Mg0nanoclusters In solution, stabilized Mg0nanoclusters produce white light (450-620 nm with FWHM ∼120 nm) upon 366 nm light excitation. This white light emission was found to have a CIE coordinate of 0.30, 0.33 [pure white light CIE (0.33, 0.33)]. Taking advantage of WLE and ultrasmall size, FMNCs were used forin vitrofluorescence imaging of HaCaT cell lines, yielding blue (τ= 2.94 ns, with a relative of QY = 1.2 % w.r.t QS), green (τ= 3.07 ns; relative quantum yield of 4.6% w.r.t R6G) and red (τ= 0.3 ns) images. Further, incubation of FMNCs with HEK293 (Human embryonic kidney cell) and cancerous MDA-MB-231 (Breast cancer cell line) human cell lines yielded 100 % cell viability. Current work is envisioned to contribute significantly in the area of science, engineering, and nanomedicine.
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Affiliation(s)
- Prachi Srivastava
- Nano2Micro Material Design Lab, IIT (BHU), Varanasi, India
- School of Biomedical Engineering, IIT (BHU), Varanasi-221005, India
| | - Vivek Kumar Verma
- Nano2Micro Material Design Lab, IIT (BHU), Varanasi, India
- School of Biomedical Engineering, IIT (BHU), Varanasi-221005, India
| | - Shivesh Sabbarwal
- Nano2Micro Material Design Lab, IIT (BHU), Varanasi, India
- Department of Chemical Engineering & Technology, IIT (BHU), Varanasi-221005, India
| | - Mamata Singh
- Department of Zoology, Banaras Hindu University, Varanasi-221005, India
| | - Kedar Sahoo
- Nano2Micro Material Design Lab, IIT (BHU), Varanasi, India
- Department of Chemical Engineering & Technology, IIT (BHU), Varanasi-221005, India
| | - Biplob Koch
- Department of Zoology, Banaras Hindu University, Varanasi-221005, India
| | - Manoj Kumar
- Nano2Micro Material Design Lab, IIT (BHU), Varanasi, India
- Department of Chemical Engineering & Technology, IIT (BHU), Varanasi-221005, India
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8
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Berthou M, Clarot I, Gouyon J, Steyer D, Monat MA, Boudier A, Pallotta A. Thiol sensing: From current methods to nanoscale contribution. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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9
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Lu CH, Yeh YC. Synthesis and Processing of Dynamic Covalently Crosslinked Polydextran/Carbon Dot Nanocomposite Hydrogels with Tailorable Microstructures and Properties. ACS Biomater Sci Eng 2022; 8:4289-4300. [PMID: 36075100 DOI: 10.1021/acsbiomaterials.2c00873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Using functionalized nanoparticles to crosslink hydrophilic polymers is a growing theme of directly constructing nanocomposite (NC) hydrogels. Employing dynamic covalent chemistry at the nanoparticle-polymer interface is particularly attractive due to the spontaneous formation and reversible manner of dynamic covalent bonds. However, the structure and property modulation of the dynamic covalently crosslinked NC hydrogels has not been thoroughly discussed. Here, we fabricated NC hydrogels by using amine-functionalized carbon dots (CDs) to crosslink polydextran aldehyde (PDA) polymers through imine bond formation. The role of PDA with different oxidation degrees (i.e., PDA10, PDA30, and PDA50) in affecting the microstructures and properties of PDA@CD hydrogels was systematically investigated, showing that the PDA50@CD hydrogel presented the densest structure and the highest mechanical strength among the three PDA@CD hydrogels. The pH-responsiveness, 3D printing, electrospinning, and biocompatibility of PDA@CD hydrogels were also demonstrated, showing the great promise of using PDA@CD hydrogels for applications in biomedicine and biofabrication.
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Affiliation(s)
- Cheng-Hsun Lu
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Yi-Cheun Yeh
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei 10617, Taiwan
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10
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Chiu NC, Smith KT, Stylianou KC. Metal-organic frameworks for white light emission: From synthesis to device fabrication. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214441] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Biranje A, Azmi N, Tiwari A, Chaskar A. Quantum Dots Based Fluorescent Probe for the Selective Detection of Heavy Metal Ions. J Fluoresc 2021; 31:1241-1250. [PMID: 34181146 DOI: 10.1007/s10895-021-02755-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 05/20/2021] [Indexed: 11/27/2022]
Abstract
Heavy metal ions are one of the primary causes of environmental pollution. A marshal effect of heavy metal ions is a paramount ultimatum to humans, aquatic animals and other organisms present in nature. Multitude arrays of materials have been proclaimed for sensing of heavy metal ions and also many methodologies are applied for heavy metal ion sensing. Due to their toxicity and non-biodegradability, it is required to be perceived immediately prior to its manifestation of harmful effects. Quantum Dots (QDs) are zero-dimensional nanomaterial particles and owing to their distinctive optical and electronic properties, they are utilized as nanosensors. QDs have enriched fluorescence properties which includes broad excitation spectrum, narrow emission spectrum and photostability. QDs offer eclectic and sensitive detection of heavy metal ions due to presence of discrete capping agents and different functional groups present on the surface of the QDs. These capping layers and functional groups attune the sensing capability of the QDs, which leverages the interactions of QDs with various analytes by different mechanisms. This review, comprising of papers from 2011 to 2020,focuses on heavy metal ions sensing potential of various quantum dots and its applicability as a nanosensor for on field heavy metal ions detection in water. Quantum Dots (QDs) based Heavy Metal Detection.
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Affiliation(s)
- Akshaya Biranje
- National Centre for Nanoscience and Nanotechnology, University of Mumbai, Vidyanagari, Kalina, Santacruz (East), Mumbai, 400098, India
| | - Namrah Azmi
- National Centre for Nanoscience and Nanotechnology, University of Mumbai, Vidyanagari, Kalina, Santacruz (East), Mumbai, 400098, India
| | - Abhishekh Tiwari
- National Centre for Nanoscience and Nanotechnology, University of Mumbai, Vidyanagari, Kalina, Santacruz (East), Mumbai, 400098, India.
| | - Atul Chaskar
- National Centre for Nanoscience and Nanotechnology, University of Mumbai, Vidyanagari, Kalina, Santacruz (East), Mumbai, 400098, India.
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Jagannathan M, Dhinasekaran D, Soundharraj P, Rajendran S, Vo DVN, Prakasarao A, Ganesan S. Green synthesis of white light emitting carbon quantum dots: Fabrication of white fluorescent film and optical sensor applications. JOURNAL OF HAZARDOUS MATERIALS 2021; 416:125091. [PMID: 33866289 DOI: 10.1016/j.jhazmat.2021.125091] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 11/17/2020] [Accepted: 01/06/2021] [Indexed: 06/12/2023]
Abstract
In this work, we have reported on the facile synthesis of white light-emitting carbon quantum dots (CQD) from corncob by hydrothermal method. This CQD has a broad emission from 380 nm to 650 nm with high photoluminescence intensity even after three months of shelf-life and stable at variable pH conditions. The presence of Si and N impurities in the biomass gives a greater advantage in producing white light emission with high quantum yield (54%) and enhanced lifetime at ambient conditions. The CQD is highly sensitive towards DNA, paracetamol, Pb2+, Cu2+, Fe3+, and Cr3+ fluorescence sensing and signifies its application as a multi-modal fluorescence sensor. The results of optical sensitivity calculated from the linear range of 1-10 ng/mL, 0.10-0.30 mg/mL, 2.5446 ng/mL, 0.0694 mg/mL, 0.3103-1.5515 μM/mL, 0.4299-4.7293 μM/mL, 1.3010 μM/mL and 0.05-2.5 μM/mL. The limit of detection is 2.5446 ng/mL, 0.0694 mg/mL, 0.8641 μM/mL, 1.2454 μM/mL, 1.3010 μM/m, 0.8550 μM/mL and 2.8562 μM/mL, respectively. And also, the relative standard deviation values of 2.30%, 4.46%, 1.79%, 1.84%, 0.26%, 1.23% and 0.35% are evidences its possibility of development towards potential optical sensor applications. Flexible white light-emitting sheets were fabricated from the CQD, illuminates uniform brightness, and has good color reproducibility and higher stability under various UV light excitation.
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Affiliation(s)
- Mohanraj Jagannathan
- Department of Medical Physics, CEG Campus, Anna University, Chennai 600025, India
| | | | - Prabha Soundharraj
- Department of Medical Physics, CEG Campus, Anna University, Chennai 600025, India
| | - Saravanan Rajendran
- Laboratorio de Investigaciones Ambientales Zonas Áridas, Departamento de Ingeniería Mecánica, Facultad de Ingeniería, Universidad de Tarapacá, Avda. General Velásquez 1775, Arica, Chile
| | - Dai-Viet N Vo
- Center of Excellence for Green Energy and Environmental Nanomaterials (CE@GrEEN), Nguyen Tat Thanh University, 300A Nguyen Tat Thanh, District 4, Ho Chi Minh City 755414, Viet Nam
| | - Aruna Prakasarao
- Department of Medical Physics, CEG Campus, Anna University, Chennai 600025, India
| | - Singaravelu Ganesan
- Department of Medical Physics, CEG Campus, Anna University, Chennai 600025, India
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13
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Manna M, Roy S, Bhandari S, Chattopadhyay A. A Ratiometric and Visual Sensing of Phosphate by White Light Emitting Quantum Dot Complex. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:5506-5512. [PMID: 33928783 DOI: 10.1021/acs.langmuir.1c00194] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Ratiometric and visual sensing of phosphate by using a white light emitting quantum dot complex (WLE QDC) is reported herein. The WLE QDC comprised of Mn2+-doped ZnS quantum dot (with λem = 585 nm) and surface zinc quinolate (ZnQS2) complex (with λem= 480 nm). The limit of detection was estimated to be of 5.9 nM in the linear range of 16.6-82.6 nM. This was accomplished by monitoring the variations in the photoluminescence color, intensity ratio (I480/I585), chromaticity and hue of the WLE QDC in the presence of phosphate. The high selectivity and sensitivity of WLE QDC toward phosphate was observed. The chemical interaction of ZnQS2 (present in WLE QDC) with phosphate might have led to the observed specificity in photoluminescence changes. The presented WLE QDC was successfully employed for the quantification of phosphate in samples prepared using environmental water and commercial fertilizer.
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Affiliation(s)
| | | | - Satyapriya Bhandari
- Department of Chemistry, University of North Bengal, Raja Rammohunpur, Darjeeling, West Bengal 734013, India
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14
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Mohd Yusof Chan NN, Idris A, Zainal Abidin ZH, Tajuddin HA, Abdullah Z. White light employing luminescent engineered large (mega) Stokes shift molecules: a review. RSC Adv 2021; 11:13409-13445. [PMID: 35423891 PMCID: PMC8697633 DOI: 10.1039/d1ra00129a] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 05/14/2021] [Accepted: 03/03/2021] [Indexed: 12/14/2022] Open
Abstract
Large (mega) Stokes shift molecules have shown great potential in white light emission for optoelectronic applications, such as flat panel display technology, light-emitting diodes, photosensitizers, molecular probes, cellular and bioimaging, and other applications. This review aims to summarize recent developments of white light generation that incorporate a large Stokes shift component, key approaches to designing large Stokes shift molecules, perspectives on future opportunities, and remaining challenges confronting this emerging research field. After a brief introduction of feasible pathways in generating white light, exemplifications of large Stokes shift molecules as white light candidates from organic and inorganic-based materials are illustrated. Various possible ways to design such molecules have been revealed by integrating the photophysical mechanisms that are essential to produce red-shifted emission upon photoexcitation, such as excited state intramolecular proton transfer (ESIPT), intramolecular charge transfer (ICT), excited state geometrical relaxation or structural deformation, aggregation-induced emission (AIE) alongside the different formations of aggregates, interplay between monomer and excimer emission, host-guest interaction, and lastly metal to ligand charge transfer (MLCT) via harvesting triplet state. Furthermore, previously reported fluorescent materials are described and categorized based on luminescence behaviors on account of the Stokes shifts value. This review will serve as a rationalized introduction and reference for researchers who are interested in exploring large or mega Stokes shift molecules, and will motivate new strategies along with instigation of persistent efforts in this prominent subject area with great avenues.
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Affiliation(s)
- Nadia Nabihah Mohd Yusof Chan
- Department of Chemistry, Faculty of Science, University of Malaya 50603 Kuala Lumpur Malaysia
- Centre for Ionics University of Malaya, Department of Physics, Faculty of Science, University of Malaya 50603 Kuala Lumpur Malaysia
| | - Azila Idris
- Department of Chemistry, Faculty of Science, University of Malaya 50603 Kuala Lumpur Malaysia
| | - Zul Hazrin Zainal Abidin
- Centre for Ionics University of Malaya, Department of Physics, Faculty of Science, University of Malaya 50603 Kuala Lumpur Malaysia
| | - Hairul Anuar Tajuddin
- Department of Chemistry, Faculty of Science, University of Malaya 50603 Kuala Lumpur Malaysia
| | - Zanariah Abdullah
- Department of Chemistry, Faculty of Science, University of Malaya 50603 Kuala Lumpur Malaysia
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15
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Hazarika D, Karak N. Environmentally Benign Hydrophobic Hyperbranched Waterborne Polyester/SiO2–Carbon Dot Nanocomposite as an Efficient Photocatalyst and White-Light Emitter. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b04725] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Deepshikha Hazarika
- Advanced Polymer and Nanomaterial Laboratory, Department of Chemical Sciences, Tezpur University, Napaam, Tezpur 784028, Assam, India
| | - Niranjan Karak
- Advanced Polymer and Nanomaterial Laboratory, Department of Chemical Sciences, Tezpur University, Napaam, Tezpur 784028, Assam, India
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