Fluorescent PEI@Pd nanoclusters: facile synthesis and application

Wen, Wen; Li, Zhongping; Wang, Xu; Du, Xiaoyan; Wen, Guangming; Li, Li

doi:10.1039/d1ra06307c

Cited by 3 publications

(2 citation statements)

References 41 publications

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“…13−17 Among various biosensors, fluorescence analysis has garnered more widespread attention on account of its low cost, great sensitivity and selectivity, and simple manipulation. In recent years, some fluorescent materials have been used to detect OTC, such as carbon dots, 18,19 metal NCs, 20,21 work materials. 22,23 Nonetheless, most of these probes displayed a single quenching response in the fluorescence intensity, which could be extremely interfered by extraneous factors and restrict the sensitivity as well as the practical applications.…”

Section: ■ Introductionmentioning

confidence: 99%

“…In recent years, several methods have been used to detect OTC. − Among various biosensors, fluorescence analysis has garnered more widespread attention on account of its low cost, great sensitivity and selectivity, and simple manipulation. In recent years, some fluorescent materials have been used to detect OTC, such as carbon dots, , metal NCs, , and metal–organic framework materials. , Nonetheless, most of these probes displayed a single quenching response in the fluorescence intensity, which could be extremely interfered by extraneous factors and restrict the sensitivity as well as the practical applications . By contrast, ratiometric fluorescent probes with two emission signals can effectually eliminate and correct interference because of their built-in self-calibration ability and further increase the dynamic range of measurement and realize quantitative detection. , Moreover, the signal variation of probes can be easily distinguished by the naked eyes .…”

Section: Introductionmentioning

confidence: 99%

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Gold–Silver Bimetallic Nanoclusters Protected by Glutathione S-Transferase for Colorimetric Sensing of Oxytetracycline

Cao

Zhou

Zhu

et al. 2022

ACS Appl. Nano Mater.

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Gold−silver alloy nanoclusters (AuAgNCs) were synthesized, protected by glutathione S-transferase (GST). The asprepared GST-AuAgNCs displayed strong (QY = 15.9%) fluorescence with two emission peaks around 477 and 653 nm under excitation of 395 nm. In this system, both the NC core and the organic shell contributed to the development of a "turn-on" ratiometric fluorescent probe for sensitively and selectively detecting oxytetracycline (OTC). First, the green fluorescence at 477 nm enhanced with the addition of OTC into GST-AuAgNC solution, whereas the red fluorescence at 653 nm remained unchanged. This "turn-on" ratiometric fluorescence may stem from the aggregation-induced emission effect and the reduction of Ag(I). The fluorescence ratio of GST-AuAgNCs displayed good linearity when the concentration of OTC was in the range of 0∼50 μM, and the detection limit was achieved down to 32.66 nM. Second, benefiting from the strong interaction between GST and OTC, the proposed method exhibited good anti-interference toward OTC in comparison with the common ions and natural amino acids. Moreover, the variation of ratiometric fluorescence intensity resulted in the corresponding red-to-green fluorescent color change, which could be employed to establish a simple paperbased analytical method for OTC colorimetric detection. Based on the superiority of high sensitivity and selectivity, as well as good accuracy and biocompatibility, the GST-AuAgNCs were successfully applied for detecting OTC in cells.

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Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Gold–Silver Bimetallic Nanoclusters Protected by Glutathione S-Transferase for Colorimetric Sensing of Oxytetracycline

Cao

Zhou

Zhu

et al. 2022

ACS Appl. Nano Mater.

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Enhanced electrochemiluminescence immunosensor using MIL-53(Fe) as co-reaction promoter of Ru(bpy)32+/PEI system for the detection of carcinoembryonic antigen

Jiang,

Liang,

Zhao

et al. 2024

Sensors and Actuators B: Chemical

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Water-promoted oxidative coupling of aromatics with subnanometer palladium clusters confined in zeolites

Feng,

Wang,

Chen

et al. 2024

Nat Commun

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A fundamental understanding of the active sites in working catalysts can guide the rational design of new catalysts with improved performances. In this work, we have followed the evolution of homogeneous and heterogeneous Pd catalysts under the reaction conditions for aerobic oxidative coupling of toluene for the production of 4,4′-bitolyl. We have found that subnanometer Pd clusters made with a few Pd atoms are the working active sites in both homogeneous and heterogeneous catalytic systems. Moreover, water can promote the activity of Pd clusters by nearly one-order magnitude for oxidative coupling reaction by facilitating the activation of O 2 . These new insights lead to the preparation of a catalyst made with Pd clusters supported on a two-dimensional zeolite, which expands the scope of the oxidative coupling of aromatics to larger substrates.

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Fluorescent PEI@Pd nanoclusters: facile synthesis and application

Abstract: Metal nanoclusters (NCs) have recently emerged as a novel class of luminescent nanomaterials and held significant potential in analytical chemistry.

Cited by 3 publications

References 41 publications

Gold–Silver Bimetallic Nanoclusters Protected by Glutathione S-Transferase for Colorimetric Sensing of Oxytetracycline

Gold–Silver Bimetallic Nanoclusters Protected by Glutathione S-Transferase for Colorimetric Sensing of Oxytetracycline

Enhanced electrochemiluminescence immunosensor using MIL-53(Fe) as co-reaction promoter of Ru(bpy)32+/PEI system for the detection of carcinoembryonic antigen

Water-promoted oxidative coupling of aromatics with subnanometer palladium clusters confined in zeolites

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