Strongly fluorescent cysteamine-coated copper nanoclusters as a fluorescent probe for determination of picric acid

Bao, Zhijun; Zhang, Kui; Jian, Jingyi; Hu, Ziwei; Yuan, Kaisong; Peng, Kun; Jiang, Zhengjin; Zapien, Juan Antonio; Yan, Y. J.; Zhang, Cheng; Zhou, Haibo

doi:10.1007/s00604-018-3049-2

Cited by 24 publications

(5 citation statements)

References 35 publications

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“…So far, most of the reported (published in 2018) fluorometric CuNCs sensors are based on fluorescence quenching due to TNP. GSH-, DNA-, 283 cysteamine-, 284 and ascorbic acid-templated 285 CuNCs were reported with LODs of 2.74 μM, 0.03 μM, 139 nM, 0.98 μM, respectively. The PL quenching of the clusters due to the electrostatic interaction between electron acceptor (TNP) and electron donor clusters was ascribed to the FRET phenomenon in BSA-CuNCs.…”

Section: Acid Detectionmentioning

confidence: 99%

Copper nanoclusters: designed synthesis, structural diversity, and multiplatform applications

2021

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Section: Acid Detectionmentioning

confidence: 99%

Copper nanoclusters: designed synthesis, structural diversity, and multiplatform applications

2021

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“…Other CuNCs have also been reported to present similar functions based on the fluorescence quenching mechanism (Shanmugaraj and John 2018;Zhang et al 2018c). Cysteamine-coated CuNCs were prepared by Bao et al (Bao et al 2018) to show a superior detection range (1-80 μM) and detection limit (139 nM).…”

Section: Picric Acid (Pa) Detectionmentioning

confidence: 99%

Highly fluorescent copper nanoclusters for sensing and bioimaging

Ren

Bick

et al. 2020

Biosensors and Bioelectronics

148

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Metal nanoclusters (NCs), typically consisting of a few to tens of metal atoms, bridge the gap between organometallic compounds and crystalline metal nanoparticles. As their size approaches the Fermi wavelength of electrons, metal NCs exhibit discrete energy levels, which in turn results in the emergence of intriguing physical and chemical (or physicochemical) properties, especially strong fluorescence. In the past few decades, dramatic growth has been witnessed in the development of different types of noble metal NCs (mainly AuNCs and AgNCs). However, compared with noble metals, copper is a relatively earth-abundant and cost-effective metal. Theoretical and experimental studies have shown that copper NCs (CuNCs) possess unique catalytic and photoluminescent properties. In this context, CuNCs are emerging as a new class of nontoxic, economic, and effective phosphors and catalysts, drawing significant interest across the life and medical sciences. To highlight these achievements, this review begins by providing an overview of a multitude of factors that play central roles in the fluorescence of CuNCs. Additionally, a critical perspective of how the aggregation of CuNCs can efficiently improve the florescent stability, tunability, and intensity is also discussed. Following, we present representative applications of CuNCs in detection and bioimaging. Finally, we outline current challenges and our perspective on the development of CuNCs.When decreasing the size of nanoparticles so that it approaches the Fermi wavelength of an electron, novel optical, electrical and magnetic properties appear (Deng et al. 2018a; Li et al. 2016b;Moghadam and Rahaie 2019;Wang et al. 2018c). Commonly termed nanoclusters (NCs), these ultra-small nanoparticles, bridging the missing link between atoms and nanocrystals, have attracted considerable attention in both fundamental research and practical applications (Bagheri et al. 2017;Basu et al. 2019;Sun et al. 2019;Wang et al. 2016b). Benefiting from the great progress in nanosynthetic chemistry, high-quality Copper NCs (CuNCs) with tailored size and good stability can be easily obtained. CuNCs, therefore, constitute an active research direction due to their unique properties, such as high luminous efficiency, long fluorescence lifetime, good optical and chemical stability, and large stokes displacement, which distinguish them as a new type of fluorescent probe for optical sensing and bioimaging/labeling (Cao et al. 2014;Wang et al. 2017).In this review, we highlight recent developments of CuNCs, with a particular emphasis on the multiple factors affecting fluorescent properties of CuNCs, as well as the aggregation-induced emission enhancement (AIEE) effect. To appreciate these advances, applications focused on the detection of ions, macromolecules and bioimaging are summarized. Lastly, we will provide a brief conclusion, and will address future challenges in the rapidly growing field of fluorescent CuNCs. Multiple factors that govern the fluorescence of CuNCsDue to the size of CuNCs falls w...

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“…Since BSA is a very popular protein template in the synthesis of metal nanoclusters, many other BSA-Cu NCs with blue luminescence were subsequently reported [ 12 , 19 , 20 ]. Apart from proteins, thiolate ligands were also used widely to prepare Cu NCs [ 17 , 21 , 22 , 23 , 24 ]. In this category, glutathione (GSH) was a typical one [ 25 , 26 , 27 ].…”

Section: Preparation Methods and Sensing Mechanism Of Cu Ncsmentioning

confidence: 99%

Synthesis of Copper Nanocluster and Its Application in Pollutant Analysis

et al. 2021

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Copper nanoclusters (Cu NCs) with their inherent optical and chemical advantages have gained increasing attention as a kind of novel material that possesses great potential, primarily in the use of contaminants sensing and bio-imaging. With a focus on environmental safety, this article comprehensively reviews the recent advances of Cu NCs in the application of various contaminants, including pesticide residues, heavy metal ions, sulfide ions and nitroaromatics. The common preparation methods and sensing mechanisms are summarized. The typical high-quality sensing probes based on Cu NCs towards various target contaminants are presented; additionally, the challenges and future perspectives in the development and application of Cu NCs in monitoring and analyzing environmental pollutants are discussed.

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Strongly fluorescent cysteamine-coated copper nanoclusters as a fluorescent probe for determination of picric acid

Cited by 24 publications

References 35 publications

Copper nanoclusters: designed synthesis, structural diversity, and multiplatform applications

Copper nanoclusters: designed synthesis, structural diversity, and multiplatform applications

Highly fluorescent copper nanoclusters for sensing and bioimaging

Synthesis of Copper Nanocluster and Its Application in Pollutant Analysis

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