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Islam SU, Latief U, Ali J, Khan MS. Long wavelength emissive ZnO/CQDs phosphor with high color purity and its application in sensitive detection of cadmium (II). SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 304:123292. [PMID: 37625198 DOI: 10.1016/j.saa.2023.123292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 08/07/2023] [Accepted: 08/21/2023] [Indexed: 08/27/2023]
Abstract
Production of color-tunable emission via simple method for upcoming displays and lighting technologies, and their exceptional luminescence provide considerable potential in sensing application. As environmental pollution and diseases brought by cadmium have always been global issues, therefore, it is imperative to develop an inexpensive, quick, easy, and selective approach for detecting trace cadmium. Herein, we describe the preperation of ZnO/carbon quantum dots (ZnO/CQDs) nanocomposite that emits strongly in the yellow-orange zone with the chromaticity coordinates (0.51, 0.47) and a high color purity (CP) value of 94.3%. The as-produced ZnO/CQDs are used as a fluorescence sensor for Cd2+ via quenching mechanism due to competitive coordination between ZnO/CQDs and Cd2+ with the limit of detection (LOD) of 0.14 μM. Additionally, the suggested method can successfully detect Cd2+ in water samples, demonstrating the feasibility and potential uses of the sensing platform. This study may pave the way for the development of environmentally safe, high-performing, and inexpensive color-tunable phosphor for white LEDs and sensing applications.
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Affiliation(s)
- Shafi Ul Islam
- Department of Physics, Jamia Millia Islamia, New Delhi 110025, India
| | - Urosa Latief
- Department of Physics, Jamia Millia Islamia, New Delhi 110025, India
| | - Javid Ali
- Department of Physics, Jamia Millia Islamia, New Delhi 110025, India
| | - Mohd Shahid Khan
- Department of Physics, Jamia Millia Islamia, New Delhi 110025, India.
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Sun S, Xiao QR, Ye CF, Jiang Y. Biomacromolecular fluorescent nanoparticles co-assembled by bovine serum albumin and DNA segments for living cell imaging. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125255] [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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3
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DNAzyme-functionalized porous carbon nanospheres serve as a fluorescent nanoprobe for imaging detection of microRNA-21 and zinc ion in living cells. Mikrochim Acta 2020; 187:249. [DOI: 10.1007/s00604-020-04226-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 03/16/2020] [Indexed: 02/07/2023]
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A ratiometric fluorescent core-shell nanoprobe for sensing and imaging of zinc(II) in living cell and zebrafish. Mikrochim Acta 2018; 185:523. [DOI: 10.1007/s00604-018-3066-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Accepted: 10/20/2018] [Indexed: 12/29/2022]
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Methionine-Capped Gold Nanoclusters as a Fluorescence-Enhanced Probe for Cadmium(II) Sensing. SENSORS 2018; 18:s18020658. [PMID: 29473911 PMCID: PMC5855495 DOI: 10.3390/s18020658] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 02/05/2018] [Accepted: 02/05/2018] [Indexed: 12/14/2022]
Abstract
Gold nanoclusters (Au NCs) have been considered as novel heavy metal ions sensors due to their ultrafine size, photo-stability and excellent fluorescent properties. In this study, a green and facile method was developed for the preparation of fluorescent water-soluble gold nanoclusters with methionine as a stabilizer. The nanoclusters emit orange fluorescence with excitation/emission peaks at 420/565 nm and a quantum yield of about 1.46%. The fluorescence of the Au NCs is selectively and sensitively enhanced by addition of Cd(II) ions attributed to the Cd(II) ion-induced aggregation of nanoclusters. This finding was further used to design a fluorometric method for the determination of Cd(II) ions, which had a linear response in the concentration range from 50 nM to 35 μM and a detection limit of 12.25 nM. The practicality of the nanoprobe was validated in various environmental water samples and milk powder samples, with a fairly satisfactory recovery percent.
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Wu Q, Zhou M, Shi J, Li Q, Yang M, Zhang Z. Synthesis of Water-Soluble Ag2S Quantum Dots with Fluorescence in the Second Near-Infrared Window for Turn-On Detection of Zn(II) and Cd(II). Anal Chem 2017; 89:6616-6623. [DOI: 10.1021/acs.analchem.7b00777] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Qian Wu
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, People’s Republic of China
| | - Ming Zhou
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, People’s Republic of China
| | - Jing Shi
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, People’s Republic of China
| | - Qijun Li
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, People’s Republic of China
| | - Mingyang Yang
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, People’s Republic of China
| | - Zhixun Zhang
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, People’s Republic of China
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Khani R, Ghiamati E, Boroujerdi R, Rezaeifard A, Zaryabi MH. A new and highly selective turn-on fluorescent sensor with fast response time for the monitoring of cadmium ions in cosmetic, and health product samples. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 163:120-126. [PMID: 27045784 DOI: 10.1016/j.saa.2016.03.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Revised: 03/09/2016] [Accepted: 03/11/2016] [Indexed: 06/05/2023]
Abstract
Cadmium (Cd) which is an extremely toxic could be found in many products like plastics, fossil fuel combustion, cosmetics, water resources, and wastewaters. It is capable of causing serious environmental and health problems such as lung, prostate, renal cancers and the other disorders. So, the development of a sensor to continually monitor cadmium is considerably demanding. Tetrakis(4-nitrophenyl)porphyrin, T(4-NO2-P)P, was synthesized and used as a new and highly selective fluorescent probe for monitoring cadmium ions in the "turn-on" mode. There was a linear relationship between fluorescence intensity and the concentration of Cd(II) in the range of 1.0×10(-6) to 1.0×10(-5)molL(-1) with a detection limit of 0.276μM. To examine the most important parameters involved and their interactions in the sensor optimization procedure, a four-factor central composite design (CCD) combined with response surface modeling (RSM) was implemented. The practical applicability of the developed sensor was investigated using real cosmetic, and personal care samples.
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Affiliation(s)
- Rouhollah Khani
- Department of Chemistry, Faculty of Science, University of Birjand, P.O. Box 414, Birjand, Iran
| | - Ebrahim Ghiamati
- Department of Chemistry, Faculty of Science, University of Birjand, P.O. Box 414, Birjand, Iran.
| | - Ramin Boroujerdi
- Department of Chemistry, Faculty of Science, University of Birjand, P.O. Box 414, Birjand, Iran
| | - Abdolreza Rezaeifard
- Department of Chemistry, Faculty of Science, University of Birjand, P.O. Box 414, Birjand, Iran
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Abstract
This article gives an overview of the various kinds of nanoparticles (NPs) that are widely used for purposes of fluorescent imaging, mainly of cells and tissues. Following an introduction and a discussion of merits of fluorescent NPs compared to molecular fluorophores, labels and probes, the article assesses the kinds and specific features of nanomaterials often used in bioimaging. These include fluorescently doped silicas and sol-gels, hydrophilic polymers (hydrogels), hydrophobic organic polymers, semiconducting polymer dots, quantum dots, carbon dots, other carbonaceous nanomaterials, upconversion NPs, noble metal NPs (mainly gold and silver), various other nanomaterials, and dendrimers. Another section covers coatings and methods for surface modification of NPs. Specific examples on the use of nanoparticles in (a) plain fluorescence imaging of cells, (b) targeted imaging, (c) imaging of chemical species, and (d) imaging of temperature are given next. A final section covers aspects of multimodal imaging (such as fluorescence/nmr), imaging combined with drug and gene delivery, or imaging combined with therapy or diagnosis. The electronic supplementary information (ESI) gives specific examples for materials and methods used in imaging, sensing, multimodal imaging and theranostics such as imaging combined with drug delivery or photodynamic therapy. The article contains 273 references in the main part, and 157 references in the ESI.
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Affiliation(s)
- Otto S Wolfbeis
- Institute of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, 93040 Regensburg, Germany.
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Huang S, Yang BZ, Jiang XF, Ren AM. Computational design of zinc-ion-responsive two-photon fluorescent probes with conjugated multi-structures. J Mol Model 2016; 22:34. [PMID: 26781662 DOI: 10.1007/s00894-015-2887-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Accepted: 12/10/2015] [Indexed: 11/28/2022]
Abstract
A series of conjugated multi-structured fluorescent probe molecules based on a salen ligand were designed and investigated in dimethyl sulfoxide solvent using a quantum-chemical method. The results indicate that the one-photon absorption and fluorescence emission spectra (λ (O) and λ (EM)) of these molecules generally show redshifts (of 23.1-74.5 and 22.7-116.6 nm, respectively) upon the coordination of the molecules to Zn(2+). Large Stokes shifts (1511.2-11744.1 cm(-1)) were found for the molecules, meaning that interference between λ (O) and λ (EM) can be avoided for these molecules. The two-photon absorption spectra of the molecules usually present blueshifts, but the two-photon absorption cross-section (δ) greatly increases (by 221.5-868.0 GM) upon the coordination of the molecules with Zn(2+). Most of the molecules show strong two-photon absorption peaks in the range 678.2-824.4 nm, i.e., in the near-infrared region. In a word, the expanded π-conjugated frameworks of these molecules lead to redshifted λ (O) and λ (EM) and enhanced δ values. Moreover, (L-phenyl)2 and (L-phenyl-ethynyl)2 are the most suitable of the multi-structured molecules examined in this work for use as two-photon fluorescent probes for zinc ion detection in vivo. Graphical Abstract Scheme of the calculated transition energies (E0k and E0n) and the transition dipole moments (M0k and Mkn). NTO 109, NTO 197 and NTO 228 of Zn(L-phenyl-ethynyl), Zn2(L-phenyl-ethynyl)2 and Zn3(L-phenyl)3 for one-photon absorption, respectively.
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Affiliation(s)
- Shuang Huang
- School of Mathematics and Physics, Changzhou University, Changzhou, 213164, People's Republic of China.,State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, Hangzhou, People's Republic of China
| | - Bao-Zhu Yang
- School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, People's Republic of China.
| | - Xing-Fang Jiang
- School of Mathematics and Physics, Changzhou University, Changzhou, 213164, People's Republic of China.,State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, Hangzhou, People's Republic of China
| | - Ai-Min Ren
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun, 130023, People's Republic of China
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Abstract
Recent progress in quantum dot (QD) based chemo- and biosensors for various applications is summarized.
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Affiliation(s)
- Lei Cui
- College of Science
- School of Environment and Architecture
- University of Shanghai for Science and Technology
- Shanghai 200293
- PR China
| | - Xiao-Peng He
- Key Laboratory for Advanced Materials & Institute of Fine Chemicals
- East China University of Science and Technology (ECUST)
- Shanghai 200237
- PR China
| | - Guo-Rong Chen
- Key Laboratory for Advanced Materials & Institute of Fine Chemicals
- East China University of Science and Technology (ECUST)
- Shanghai 200237
- PR China
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