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Sebastian A, P K, Aarya, Sen Mojumdar S. Temperature-Induced Luminescence Intensity Fluctuation of Protein-Protected Copper Nanoclusters: Role of Scaffold Conformation vs Nonradiative Transition. ACS OMEGA 2024; 9:21520-21527. [PMID: 38764622 PMCID: PMC11097160 DOI: 10.1021/acsomega.4c02223] [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: 03/06/2024] [Revised: 04/03/2024] [Accepted: 04/23/2024] [Indexed: 05/21/2024]
Abstract
Protein-scaffolded atomically precise metal nanoclusters (NCs) have emerged as a promising class of biofriendly nanoprobes at the forefront of modern research, particularly in the area of sensing. The photoluminescence (PL) intensity of several nanoclusters showed a systematic temperature-dependent fluctuation, but the mechanism remains ambiguous and is poorly understood. We tried to shed some light on this mechanistic aspect by testing a couple of hypotheses: (i) conformational fluctuation of the protein scaffold-mediated PL intensity fluctuation and (ii) PL intensity fluctuation due to the variation in the radiative and nonradiative transition rates. Herein, the PL intensity of the lysozyme-capped copper nanocluster (Lys-Cu NC) showed excellent temperature dependency; upon increasing the temperature, the PL intensity gradually decreased. However, contrasting effects can be seen when the nanocluster is exposed to a chemical denaturant (guanidine hydrochloride (GdnHCl)); the PL intensity increased with the increase in the GdnHCl concentration due to the change in the ionic strength of the medium. This discrepancy clearly suggests that the thermal PL intensity fluctuation cannot be explained by a change in the scaffold conformation. Furthermore, upon closer investigation, we observed a 2-fold increase in the nonradiative decay rate of the Lys-Cu NC at the elevated temperature, which could reasonably explain the decrease in the PL intensity of the nanocluster at the higher temperature. Additionally, from the result, it was evident that the protein scaffold-metal core interaction played a key role here in stabilizing each other; hence, the scaffold structure remained unaffected even in the presence of chemical denaturants.
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Affiliation(s)
- Anna Sebastian
- Department of Chemistry, Indian Institute of Technology Palakkad, Palakkad 678623, Kerala, India
| | - Kavya P
- Department of Chemistry, Indian Institute of Technology Palakkad, Palakkad 678623, Kerala, India
| | - Aarya
- Department of Chemistry, Indian Institute of Technology Palakkad, Palakkad 678623, Kerala, India
| | - Supratik Sen Mojumdar
- Department of Chemistry, Indian Institute of Technology Palakkad, Palakkad 678623, Kerala, India
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2
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Pang L, Pi X, Zhao Q, Man C, Yang X, Jiang Y. Optical nanosensors based on noble metal nanoclusters for detecting food contaminants: A review. Compr Rev Food Sci Food Saf 2024; 23:e13295. [PMID: 38284598 DOI: 10.1111/1541-4337.13295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 12/02/2023] [Accepted: 12/16/2023] [Indexed: 01/30/2024]
Abstract
Food contaminants present a significant threat to public health. In response to escalating global concerns regarding food safety, there is a growing demand for straightforward, rapid, and sensitive detection technologies. Noble metal nanoclusters (NMNCs) have garnered considerable attention due to their superior attributes compared to other optical materials. These attributes include high catalytic activity, excellent biocompatibility, and outstanding photoluminescence properties. These features render NMNCs promising candidates for crafting nanosensors for food contaminant detection, offering the potential for the development of uncomplicated, swift, sensitive, user-friendly, and cost-effective detection approaches. This review investigates optical nanosensors based on NMNCs, including the synthesis methodologies of NMNCs, sensing strategies, and their applications in detecting food contaminants. Furthermore, it involves a comparative assessment of the applications of NMNCs in optical sensing and their performance. Ultimately, this paper imparts fresh perspectives on the forthcoming challenges. Hitherto, optical (particularly fluorescent) nanosensors founded on NMNCs have demonstrated exceptional sensing capabilities in the realm of food contaminant detection. To enhance sensing performance, future research should prioritize atomically precise NMNCs synthesis, augmentation of catalytic activity and optical properties, development of high-throughput and multimode sensing, integration of NMNCs with microfluidic devices, and the optimization of NMNCs storage, shelf life, and transportation conditions.
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Affiliation(s)
- Lidong Pang
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, Harbin, China
| | - Xiaowen Pi
- College of Food Science, Southwest University, Chongqing, China
| | - Qianyu Zhao
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, Harbin, China
| | - Chaoxin Man
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, Harbin, China
| | - Xinyan Yang
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, Harbin, China
| | - Yujun Jiang
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, Harbin, China
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3
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Loya M, Ghosh S, Atta AK. A review on dual detection of Cu2+ and Ni2+ ions by using single fluorometric and colorimetric organic molecular probes. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2023.134949] [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]
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4
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Cai ZF, Wang XS, Li HY, Cao PL, Han XR, Guo PY, Cao FY, Liu JX, Sun XX, Li T, Wu Y, Zhang S. One-step synthesis of blue emission copper nanoclusters for the detection of furaltadone and temperature. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 279:121408. [PMID: 35617839 DOI: 10.1016/j.saa.2022.121408] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Revised: 05/01/2022] [Accepted: 05/16/2022] [Indexed: 06/15/2023]
Abstract
Polyvinyl pyrrolidone (PVP), playing roles as a templating agent, can be applied to prepare blue-emitting copper nanoclusters (Cu NCs@PVP) on the basis of a rapid chemical reduction synthesis method. The Cu NCs@PVP displayed a blue emission wavelength at 430 nm and the corresponding quantum yield (QY) could reach 10.4%. Subsequently, the as-synthesized Cu NCs@PVP were used for the trace analysis of furaltadone based on the inner filter effect (IFE) between Cu NCs@PVP and furaltadone, which caused the fluorescence to be effectively quenched. Additionally, this proposed determination platform based on the Cu NCs@PVP for furaltadone sensing possessed an excellent linear range from 0.5 to 100 μM with a lower detection limit of 0.045 μM (S/N = 3). Meanwhile, the Cu NCs@PVP also could be applied for the sensing of temperature. Furthermore, the practicability of the sensing platform has been successfully verified by measuring furaltadone in real samples, affirming its potential to increase fields for the determination of furaltadone.
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Affiliation(s)
- Zhi-Feng Cai
- Department of Chemistry, Taiyuan Normal University, Jinzhong 030619, China.
| | - Xian-Song Wang
- Chongqing Key Laboratory of Environmental Materials & Remediation Technologies, College of Chemistry and Environmental Engineering, Chongqing University of Arts and Sciences, Yongchuan 402160, China
| | - Hao-Yang Li
- Department of Chemistry, Taiyuan Normal University, Jinzhong 030619, China
| | - Peng-Li Cao
- Department of Chemistry, Taiyuan Normal University, Jinzhong 030619, China
| | - Xin-Rui Han
- Department of Chemistry, Taiyuan Normal University, Jinzhong 030619, China
| | - Peng-Yu Guo
- Department of Chemistry, Taiyuan Normal University, Jinzhong 030619, China
| | - Fang-Yu Cao
- Department of Chemistry, Taiyuan Normal University, Jinzhong 030619, China
| | - Jia-Xi Liu
- Department of Chemistry, Taiyuan Normal University, Jinzhong 030619, China
| | - Xue-Xue Sun
- Department of Chemistry, Taiyuan Normal University, Jinzhong 030619, China
| | - Tong Li
- Department of Chemistry, Taiyuan Normal University, Jinzhong 030619, China
| | - Ying Wu
- Department of Chemistry, Taiyuan Normal University, Jinzhong 030619, China.
| | - Shen Zhang
- Department of Chemistry, Taiyuan Normal University, Jinzhong 030619, China
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5
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Li G, Lu M, Li S, Yang M, Zhang Y, Zhang Y, Wang H, Yang W. A novel fluorescent "OFF-ON" sensing strategy for Hg (II) in water based on functionalized gold nanoparticles. CHEMOSPHERE 2022; 303:135174. [PMID: 35649443 DOI: 10.1016/j.chemosphere.2022.135174] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 05/23/2022] [Accepted: 05/27/2022] [Indexed: 06/15/2023]
Abstract
Mercury ion (Hg2+) is a heavy metal pollutant that can affect the safety of water environment and endanger human health. A novel detection strategy (GNPs-L-Cys-Rh6G2) for Hg2+ based on a fluorescence "OFF-ON" was proposed. Gold nanoparticles (GNPs) were assembled with l-cysteine (L-Cys), which was used as a "bridge" to link with rhodamine 6G derivatives (Rh6G2). The fluorescence state transition of GNPs-L-Cys-Rh6G2 switching from "OFF"-"ON" was observed because Hg2+ opened the spirolactam ring through a catalytic hydrolysis mechanism. The fluorescence signal of the GNPs-L-Cys-Rh6G2 system mixed with Hg2+ in the concentration range of 10-100 μM was analyzed and determined with a limit of detection (LOD) of 2 μM (S/N = 3). Moreover, the spiked Hg2+ concentration in real water samples were successfully quantified by GNPs-L-Cys-Rh6G2, which was in line with the ideal average recovery rate and relative standard deviation. The proposed strategy exhibited high specificity, sensitivity and stability, providing a novel sensing platform for heavy metal ions detection in water environment.
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Affiliation(s)
- Gufeng Li
- School of Chemistry and Environment, Yunnan Minzu University, Kunming, 650500, PR China.
| | - Mingrong Lu
- School of Chemistry and Environment, Yunnan Minzu University, Kunming, 650500, PR China.
| | - Shaoqing Li
- School of Chemistry and Environment, Yunnan Minzu University, Kunming, 650500, PR China.
| | - Min Yang
- School of Chemistry and Environment, Yunnan Minzu University, Kunming, 650500, PR China.
| | - Yuanling Zhang
- School of Chemistry and Environment, Yunnan Minzu University, Kunming, 650500, PR China.
| | - Yanli Zhang
- School of Chemistry and Environment, Yunnan Minzu University, Kunming, 650500, PR China.
| | - Hongbin Wang
- School of Chemistry and Environment, Yunnan Minzu University, Kunming, 650500, PR China.
| | - Wenrong Yang
- School of Life and Environmental Sciences, Deakin University, Waurn Ponds, Victoria, 3216, Australia.
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6
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Cai ZF, Li HY, Wang XS, Min C, Wen JQ, Fu RX, Dai ZY, Chen J, Guo MZ, Yang HJ, Bai PP, Lu XM, Wu T, Wu Y. Highly luminescent copper nanoclusters as temperature sensors and “turn off” detection of oxytetracycline. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129202] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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7
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Zhang S, Wang Z, Pang Y, Jing Z, Li Z, Peng F, Zhao Y, Guo Y. Highly fluorescent carbon dots from coix seed for the determination of furazolidone and temperature. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 260:119969. [PMID: 34051636 DOI: 10.1016/j.saa.2021.119969] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 05/15/2021] [Accepted: 05/16/2021] [Indexed: 06/12/2023]
Abstract
In this work, blue emission fluorescent carbon dots (CDs) were fabricated by using the hydrothermal strategy from coix seed for the first time. We found that the prepared CDs possessed many excellent characteristics including excitation-dependent properties, good solubility and strong photostability. The optimal excitation and emission wavelength of CDs were 363 and 435 nm, respectively. Unbelievably, the fluorescence of CDs was selectively and effectively quenched with the addition of furazolidone (Fu). The quenching mechanisms might be assumed to the static quenching and inner filter effect (IFE). Based on this principle, a novel fluorescence probe was developed for the determination of Fu. At the same time, the proposed probe showed excellent sensitivity and selectivity towards Fu with a wide linear range from 0.5 to 100 μM, and the corresponding detection limit was 0.096 μM. Moreover, the CDs also could be applied for the sensing of temperature. The practical application of the CDs for Fu detection in real samples was also confirmed with the satisfactory recoveries changing from 96.6% to 108.5%, which provided huge possibility in the field of medical analysis.
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Affiliation(s)
- Shen Zhang
- Department of Chemistry, Taiyuan Normal University, Jinzhong 030619, PR China.
| | - Zixin Wang
- Department of Chemistry, Taiyuan Normal University, Jinzhong 030619, PR China
| | - Yating Pang
- Department of Chemistry, Taiyuan Normal University, Jinzhong 030619, PR China
| | - Zerong Jing
- Department of Chemistry, Taiyuan Normal University, Jinzhong 030619, PR China
| | - Zheng Li
- Department of Physics, Taiyuan Normal University, Jinzhong 030619, PR China
| | - Fangfang Peng
- Department of Physics, Taiyuan Normal University, Jinzhong 030619, PR China
| | - Yiyan Zhao
- Department of Physics, Taiyuan Normal University, Jinzhong 030619, PR China
| | - Yuyu Guo
- College of Arts, Taiyuan University of Technology, Taiyuan 030024, Shanxi, PR China.
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8
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Song Y, Tao J, Wang Y, Cai Z, Fang X, Wang S, Xu H. A novel dual-responsive fluorescent probe for the detection of copper(II) and nickel(II) based on BODIPY derivatives. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2020.120099] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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9
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"Turn-off" sensing probe based on fluorescent gold nanoclusters for the sensitive detection of hemin. Anal Bioanal Chem 2021; 413:1639-1649. [PMID: 33483839 DOI: 10.1007/s00216-020-03126-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 12/09/2020] [Accepted: 12/14/2020] [Indexed: 01/18/2023]
Abstract
Balanced level of hemin in the body is fundamentally important for normal human organ function. Therefore, environmentally benign, stable, and fluorescent metal nanoclusters (NCs) for selective and sensitive detection of hemin have been investigated and reported. Herein, highly orange red emissive gold NCs are successfully synthesized using glutathione as a reducing and stabilizing agent (GSH-Au NCs). The clusters are characterized using various techniques like Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), UV-vis spectroscopy, and fluorescence spectrometer. The fluorescence intensity of as-synthesized Au NCs strongly quenched upon addition of different concentrations of hemin. The decrease in fluorescence intensity of GSH-Au NCs has been applied for determination of hemin concentration in the linear range from 1 to 25 nM with a low limit of detection (LOD) of 0.43 nM. The method was also successfully applied for quantification of hemin in human serum sample. In view of this reality, the system can be considered as a possible strategy and excellent platform for determination of hemin in various areas of application.
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10
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Li Z, Dong J, Zhang H, Zhang Y, Wang H, Cui X, Wang Z. Sonochemical catalysis as a unique strategy for the fabrication of nano-/micro-structured inorganics. NANOSCALE ADVANCES 2021; 3:41-72. [PMID: 36131881 PMCID: PMC9418832 DOI: 10.1039/d0na00753f] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Accepted: 10/22/2020] [Indexed: 05/14/2023]
Abstract
Ultrasound-assisted approaches, as an important trend in material synthesis, have emerged for designing and creating nano-/micro-structures. This review simply presents the basic principles of ultrasound irradiation including acoustic cavitation, sonochemical effects, physical and/or mechanical effects, and on the basis of the latest progress, it newly summarizes sonochemical catalysis for the fabrication of nano-structured or micro-structured inorganic materials such as metals, alloys, metal compounds, non-metal materials, and inorganic composites, where the theories or mechanisms of catalytic synthetic routes, and the morphologies, structures, sizes, properties and applications of products are described in detail. In the review, a few technological potentials and probable challenges of sonochemical catalysis are also highlighted for the future advance of synthesis methods. Therefore, sonochemical catalysis or ultrasound-assisted synthesis will serve as a unique strategy to reveal its great significance in material fabrication.
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Affiliation(s)
- Zhanfeng Li
- Shandong Sino-Japanese Center for Collaborative Research of Carbon Nanomaterials, Instrumental Analysis Center, College of Chemistry and Chemical Engineering, Qingdao University 266071 Qingdao China
| | - Jun Dong
- Shandong Sino-Japanese Center for Collaborative Research of Carbon Nanomaterials, Instrumental Analysis Center, College of Chemistry and Chemical Engineering, Qingdao University 266071 Qingdao China
| | - Huixin Zhang
- Shandong Sino-Japanese Center for Collaborative Research of Carbon Nanomaterials, Instrumental Analysis Center, College of Chemistry and Chemical Engineering, Qingdao University 266071 Qingdao China
| | - Yongqiang Zhang
- Junan Sub-Bureau of Linyi Ecological Environmental Bureau 276600 Linyi China
| | - Huiqi Wang
- Shandong Sino-Japanese Center for Collaborative Research of Carbon Nanomaterials, Instrumental Analysis Center, College of Chemistry and Chemical Engineering, Qingdao University 266071 Qingdao China
| | - Xuejun Cui
- College of Chemistry, Jilin University 130012 Changchun China
| | - Zonghua Wang
- Shandong Sino-Japanese Center for Collaborative Research of Carbon Nanomaterials, Instrumental Analysis Center, College of Chemistry and Chemical Engineering, Qingdao University 266071 Qingdao China
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11
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Gold nanoclusters fluorescence probe for monitoring chloramphenicol and study of two-dimensional correlation fluorescence spectroscopy. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.128875] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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12
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Cheng C, Zhang R, Wang J, Zhang Y, Wen C, Tan Y, Yang M. An ultrasensitive and selective fluorescent nanosensor based on porphyrinic metal–organic framework nanoparticles for Cu2+ detection. Analyst 2020; 145:797-804. [DOI: 10.1039/c9an02231g] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
A fluorescent nanosensor based on ultrasmall MOF-525 NPs was proposed for the monitoring of Cu2+ in aqueous solution and living cells.
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Affiliation(s)
- Changming Cheng
- Department of Biomedical Engineering
- the Hong Kong Polytechnic University
- Kowloon
- PR China
- Institute of Nuclear Physics and Chemistry
| | - Ruolin Zhang
- Department of Biomedical Engineering
- the Hong Kong Polytechnic University
- Kowloon
- PR China
| | - Jiuhai Wang
- Department of Biomedical Engineering
- the Hong Kong Polytechnic University
- Kowloon
- PR China
| | - Yu Zhang
- Mechanical & Automotive Engineering
- School of Engineering
- RMIT University
- Melbourne
- Australia
| | - Chunyi Wen
- Department of Biomedical Engineering
- the Hong Kong Polytechnic University
- Kowloon
- PR China
| | - Youhua Tan
- Department of Biomedical Engineering
- the Hong Kong Polytechnic University
- Kowloon
- PR China
| | - Mo Yang
- Department of Biomedical Engineering
- the Hong Kong Polytechnic University
- Kowloon
- PR China
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13
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Qi S, Zheng H, Qin H, Zhai H. Development of a facile and sensitive method for detecting alkaline phosphatase activity in serum with fluorescent gold nanoclusters based on the inner filter effect. Analyst 2020; 145:3871-3877. [DOI: 10.1039/d0an00052c] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
In this work, a simple and sensitive method based on the inner filter effect (IFE) of p-nitrophenol (PNP) on the fluorescence of gold nanoclusters (AuNCs) has been developed for detecting alkaline phosphatase (ALP) activity.
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Affiliation(s)
- Shengda Qi
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- People's Republic of China
| | - Huanhuan Zheng
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- People's Republic of China
| | - Hongyan Qin
- Department of Pharmacy
- First Hospital of Lanzhou University
- Lanzhou 730000
- People's Republic of China
| | - Honglin Zhai
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- People's Republic of China
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14
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Room temperature preparation of water-soluble polydopamine-polyethyleneimine copolymer dots for selective detection of copper ions. Talanta 2019; 197:584-591. [DOI: 10.1016/j.talanta.2019.01.070] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 01/17/2019] [Accepted: 01/23/2019] [Indexed: 01/24/2023]
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15
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Gu YQ, Shen WY, Mi Y, Jing YF, Yuan JM, Yu P, Zhu XM, Hu FL. Dual-response detection of Ni2+ and Cu2+ ions by a pyrazolopyrimidine-based fluorescent sensor and the application of this sensor in bioimaging. RSC Adv 2019; 9:35671-35676. [PMID: 35528093 PMCID: PMC9074711 DOI: 10.1039/c9ra06227k] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Accepted: 10/16/2019] [Indexed: 11/21/2022] Open
Abstract
Herein, a dual-response fluorescent sensor, L, based on pyrazolopyrimidine was designed and developed for the simultaneous detection of Ni2+ and Cu2+ ions in the presence of other metal ions; the structural characterization of L was carried out by FTIR spectroscopy, NMR spectroscopy, HRMS and X-ray diffraction analysis. The sensor L effectively displayed fluorescence quenching towards the Ni2+ and Cu2+ ions with high sensitivity without interference from other metal ions. The results reveal that L binds to Ni2+ and Cu2+ in a 2 : 1 pattern, which matches well with the result of the Job's plot. The association constants of L with Ni2+ and Cu2+ were 3.2 × 104 M−1 and 7.57 × 104 M−1, respectively. The detection limits (DLs) are down to 8.9 nM for Ni2+ and 8.7 nM for Cu2+. The fluorescence imaging of L in T-24 cells was investigated because of the low cytotoxicity of L, indicating that L could be used to detect Ni2+ and Cu2+ in living cells. A pyrazolopyrimidine-based fluorescent sensor L was developed and applied for detection of Cu2+ and Ni2+ in ethanol solution by photoluminescence quenching. It shows low cytotoxicity and good imaging characteristics for Cu2+ and Ni2+ in living cells.![]()
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Affiliation(s)
- Yun-Qiong Gu
- School of Environment and Life Science
- Nanning Normal University
- Nanning
- China
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Guangxi Normal University)
| | - Wen-Ying Shen
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Guangxi Normal University)
- Ministry of Education of China
- China
| | - Yan Mi
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products
- Guangxi University for Nationalities
- Nanning
- China
| | - Yan-Fang Jing
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products
- Guangxi University for Nationalities
- Nanning
- China
| | - Jing-Mei Yuan
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Guangxi Normal University)
- Ministry of Education of China
- China
| | - Peng Yu
- School of Environment and Life Science
- Nanning Normal University
- Nanning
- China
| | - Xiao-Min Zhu
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Guangxi Normal University)
- Ministry of Education of China
- China
| | - Fei-Long Hu
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products
- Guangxi University for Nationalities
- Nanning
- China
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16
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Liu QQ, Yue KF, Weng XJ, Wang YY. Luminescence sensing and supercapacitor performances of a new (3,3)-connected Cd-MOF. CrystEngComm 2019. [DOI: 10.1039/c9ce01087d] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Cd-MOF shows high luminescence sensing for Cu2+ and nitrobenzene. The Cd-MOF electrode exhibits high specific capacity and good cycling stability.
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Affiliation(s)
- Qian-Qian Liu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education
- National Demonstration Center for Experimental Chemistry Education
- Shaanxi Key Laboratory of Physico-Inorganic Chemistry
- College of Chemistry and Materials Science
- Northwest University
| | - Ke-Fen Yue
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education
- National Demonstration Center for Experimental Chemistry Education
- Shaanxi Key Laboratory of Physico-Inorganic Chemistry
- College of Chemistry and Materials Science
- Northwest University
| | - Xian-Jun Weng
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education
- National Demonstration Center for Experimental Chemistry Education
- Shaanxi Key Laboratory of Physico-Inorganic Chemistry
- College of Chemistry and Materials Science
- Northwest University
| | - Yao-Yu Wang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education
- National Demonstration Center for Experimental Chemistry Education
- Shaanxi Key Laboratory of Physico-Inorganic Chemistry
- College of Chemistry and Materials Science
- Northwest University
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