Modulating fluorescence emission of l-methionine-stabilized Au nanoclusters from green to red and its application for visual detection of silver ion

Hu, Yilin; Liu, An-Yong; Wu, Bichao; Zhao, Rui-Xian; Pu, Zheng-Fen; Ling, Jian; Cao, Qiue

doi:10.1016/j.microc.2021.106198

Cited by 20 publications

(7 citation statements)

References 46 publications

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“…[60] The as-prepared lysozyme-Cu NCs showed superior biocompatibility and were successfully applied to visualize various cancer cells (NIH3T3 cells, MCF7 cells, and MDA-MB-231 cells). Similarly, GSH [61] and L-methionine [62] were independently used as ligands for the synthesis of Au NCs for Co 2+ and Ag + ions sensing. The as-prepared GSH-and L-methionine Au NCs exhibited emission peaks at 500 and 536 nm, interestingly both exhibited different sensing mechanisms.…”

Section: Green Emissionmentioning

confidence: 99%

Perspectives of different colour‐emissive nanomaterials in fluorescent ink, LEDs, cell imaging, and sensing of various analytes

et al. 2022

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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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Section: Green Emissionmentioning

confidence: 99%

Perspectives of different colour‐emissive nanomaterials in fluorescent ink, LEDs, cell imaging, and sensing of various analytes

et al. 2022

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“…Ligand-protected metal nanoclusters thus could be a better choice for the selective detection of Ag(I). Most recently researchers attempted to develop metal nanoclusters for the detection of Ag(I), − but they too need improvements since their limits of detection were high and the cytotoxicity of these nanoclusters was not checked; thus, they could pose a threat to human health.…”

Section: Introductionmentioning

confidence: 99%

Rapid Detection of Ag(I) via Size-Induced Photoluminescence Quenching of Biocompatible Green-Emitting, l-Tryptophan-Scaffolded Copper Nanoclusters

et al. 2023

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Atomically precise metal nanoclusters capped with small molecules like amino acids are highly favored due to their specific interactions and easy incorporation into biological systems. However, they are rarely explored due to the challenge of surface functionalization of nanoclusters with small molecules. Herein, we report the synthesis of a green-emitting (λex = 380 nm, λem = 500 nm), single-amino-acid (l-tryptophan)-scaffolded copper nanocluster (Trp-Cu NC) via a one-pot route under mild reaction conditions. The synthesized nanocluster can be used for the rapid detection of a heavy metal, silver (Ag(I)), in the nanomolar concentration range in real environmental and biological samples. The strong green photoluminescence intensity of the nanocluster quenched significantly upon the addition of Ag(I) due to the formation of bigger nanoparticles, thereby losing its energy quantization. A notable color change from light yellow to reddish-brown can also be observed in the presence of Ag(I), allowing its visual colorimetric detection. Portable paper strips fabricated with the Trp-Cu NC can be reliably used for on-site visual detection of Ag(I) in the micromolar concentration range. The Trp-Cu NC possesses excellent biocompatibility, making it a suitable nanoprobe for cell imaging; thus, it can act as an in vivo biomarker. The nanocluster showed a significant spectral overlap with anticancer drug doxorubicin and thus can be used as an effective fluorescence resonance energy transfer (FRET) pair. FRET results can reveal important information regarding the attachment of the drug to the nanocluster and hence its role as a potential drug carrier for targeted drug delivery within the human body.

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“…Ligand protected metal nanoclusters thus could be a better choice for the selective detection of Ag(I). Most recently researchers attempted to develop metal nanoclusters for detection of Ag(I) [58][59][60][61] but they too need improvements since the limit of detection were high and the cytotoxicity for these nanoclusters has not been checked, thus could pose threat to human health.…”

Section: Introductionmentioning

confidence: 99%

Rapid Detection of Ag (I) via Size Induced Photoluminescence Quenching of Biocompatible Green Emitting L-Tryptophan Scaffolded Copper Nanocluster

Aarya

Thomas

Sarangi

et al. 2023

Preprint

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Atomically precise metal nanoclusters capped with small molecules like amino acids are highly favoured due to their specific interactions and easy incorporation into biological systems. However, they are rarely explored due to the challenge in surface functionalization of nanocluster with small molecules. Herein, we report the synthesis of green emitting (λ_ex = 380 nm, λ_em = 500 nm) single amino acid (L-tryptophan) scaffolded copper nanocluster (Trp-Cu NC) via one-pot route under mild reaction conditions. The synthesized nanocluster can be used for the rapid detection of heavy metal (Ag(I)) in the nanomolar concentration range in real environmental and biological samples. The strong green photoluminescence intensity of the nanocluster quenched significantly upon addition of Ag(I) due to the formation of bigger nanoparticles, thereby losing its energy quantization. A notable colour change from light yellow to reddish brown can also be observed in the presence of Ag(I) allowing its visual colorimetric detection. Portable paper strips fabricated with Cu-Trp NC can be reliably used for on-site visual detection of Ag(I) in the micromolar concentration range. The Trp-Cu NC possesses excellent biocompatibility making them suitable nanoprobe for cell imaging, thus can act as an in-vivo biomarker. The nanocluster showed a significant spectral overlap with an anticancer drug doxorubicin, thus can be used as an effective FRET pair. FRET results can reveal important information regarding the attachment of the drug to the nanocluster and hence, its role as a potential drug carrier for targeted drug delivery within human body.

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Modulating fluorescence emission of l-methionine-stabilized Au nanoclusters from green to red and its application for visual detection of silver ion

Cited by 20 publications

References 46 publications

Perspectives of different colour‐emissive nanomaterials in fluorescent ink, LEDs, cell imaging, and sensing of various analytes

Perspectives of different colour‐emissive nanomaterials in fluorescent ink, LEDs, cell imaging, and sensing of various analytes

Rapid Detection of Ag(I) via Size-Induced Photoluminescence Quenching of Biocompatible Green-Emitting, l-Tryptophan-Scaffolded Copper Nanoclusters

Rapid Detection of Ag (I) via Size Induced Photoluminescence Quenching of Biocompatible Green Emitting L-Tryptophan Scaffolded Copper Nanocluster

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