The controllable synthesis of orange-red emissive Au nanoclusters and their use as a portable colorimetric fluorometric probe for dopamine

Wu, Huilu; Ye, Xu; Xie, Ruyan; Tang, Mingyu; Chen, Lihua; Qu, Fengyu; Guo, Changhong; Chai, Fang

doi:10.1039/d2nj00775d

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2022

2024

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Cited by 2 publications

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“…1–4 In the widely used fluorometric and colorimetric dual-mode, the fluorescence intensity and absorbance signals are measured, respectively, using a spectrofluorophotometer and a spectrophotometer. 5–11 It is beneficial to develop a simple analytical device in dual-mode to measure simultaneously the fluorescence intensity and absorbance, which is important for field analysis.…”

Section: Introductionmentioning

confidence: 99%

A smartphone-based device for simultaneous measurement of ratiometric fluorescence and absorbance demonstrated by the determination of hypochlorous acid

Dou¹,

Shen

Yan

et al. 2022

New J. Chem.

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Section: Introductionmentioning

confidence: 99%

A smartphone-based device for simultaneous measurement of ratiometric fluorescence and absorbance demonstrated by the determination of hypochlorous acid

Dou¹,

Shen

Yan

et al. 2022

New J. Chem.

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Ratiometric fluorescence detection of dopamine based on copper nanoclusters and carbon dots

Meng,

Sun,

et al. 2024

Nanotechnology

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Nanoclusters for fluorescence detection are generally comprised of rare and expensive noble metals, and the nanoclusters based on more affordable transition metal have attracted increasing attention. This study designed a ratiometric fluorescent probe to detect dopamine (DA), an important neurotransmitter. With carbon dots encapsulated within silica (CDs@SiO2) as the reference, the emitted reference signal was almost unchanged due to the protection of inert silicon shell. Meanwhile, copper nanoclusters modified with 3-aminophenyl boronic acid (APBA-GSH-CuNCs) provided the sensing signal, in which the phenylboric acid could specifically recognize the cis-diol structure of DA, and caused the fluorescence quenching by photoinduced electron transfer. This dual emission ratiometric fluorescent probe exhibited high sensitivity and anti-interference, and was able to selectively responded to DA with a linear range of 0~1.4 mM, the detection limit of 5.6 nM, and the sensitivity of 815 mM-1. Furthermore, the probe successfully detected DA in human serum samples, yielding recoveries ranging from 92.5% to 102.7%. Overall, this study highlights the promising potential of this ratiometric probe for detecting DA.

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The controllable synthesis of orange-red emissive Au nanoclusters and their use as a portable colorimetric fluorometric probe for dopamine

Abstract: Facile and accuracy detecting dopamine (DA) in biological samples is crucial for diagnostic needs. This study reports a portable colorimetric fluorescent probe for the tracing of DA based on...

Cited by 2 publications

References 48 publications

A smartphone-based device for simultaneous measurement of ratiometric fluorescence and absorbance demonstrated by the determination of hypochlorous acid

A smartphone-based device for simultaneous measurement of ratiometric fluorescence and absorbance demonstrated by the determination of hypochlorous acid

Ratiometric fluorescence detection of dopamine based on copper nanoclusters and carbon dots

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