Electrochemiluminescence of N,N′-Dimethylformamide Passivated Black Phosphorus Quantum Dots

IF 3.7 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Langmuir Pub Date : 2024-12-19 DOI:10.1021/acs.langmuir.4c03095

Shuijian He, Weihan Li, Minsi Li, Zhenlu Liu, Xueliang Sun, Zhifeng Ding

引用次数: 0

Abstract

Black phosphorus quantum dots (BPQDs) have shown promising applications in biosensors and energy storage devices. However, the electrochemiluminescence (ECL) properties of pristine BPQDs in an organic system have rarely been reported. In this paper, N,N′-dimethylformamide passivated BPQDs with a small size of 2.3 nm were obtained by an ultrasonication-assisted liquid exfoliation process, and their ECL properties of BPQDs were studied. A reversible reduction peak was recorded by differential pulse voltammetry, while no apparent oxidation peak was observed. ECL signal was not seen in the annihilation route. Persulfate was proved to be an effective coreactant and yellow emission was observed which was greatly red-shifted in comparison to that of photoluminescence. ECL of BPQDs is believed to be generated from both the surface states and electron promotion over their band gap.

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黑磷量子点（BPQDs）在生物传感器和储能装置中的应用前景广阔。然而，原始 BPQDs 在有机体系中的电化学发光（ECL）特性却鲜有报道。本文通过超声辅助液相剥离工艺获得了小尺寸（2.3 nm）的N,N′-二甲基甲酰胺钝化BPQDs，并研究了它们的电化学发光特性。差分脉冲伏安法记录到一个可逆的还原峰，而没有观察到明显的氧化峰。在湮灭过程中也未出现 ECL 信号。实验证明，过硫酸盐是一种有效的核心反应物，并观察到黄色发射，与光致发光相比，黄色发射有很大的红移。BPQDs 的 ECL 被认为是由表面态和电子在其带隙上的促进作用产生的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Langmuir 化学-材料科学：综合

CiteScore

6.50

自引率

10.30%

发文量

1464

审稿时长

2.1 months

期刊介绍： Langmuir is an interdisciplinary journal publishing articles in the following subject categories: Colloids: surfactants and self-assembly, dispersions, emulsions, foams Interfaces: adsorption, reactions, films, forces Biological Interfaces: biocolloids, biomolecular and biomimetic materials Materials: nano- and mesostructured materials, polymers, gels, liquid crystals Electrochemistry: interfacial charge transfer, charge transport, electrocatalysis, electrokinetic phenomena, bioelectrochemistry Devices and Applications: sensors, fluidics, patterning, catalysis, photonic crystals However, when high-impact, original work is submitted that does not fit within the above categories, decisions to accept or decline such papers will be based on one criteria: What Would Irving Do? Langmuir ranks #2 in citations out of 136 journals in the category of Physical Chemistry with 113,157 total citations. The journal received an Impact Factor of 4.384*. This journal is also indexed in the categories of Materials Science (ranked #1) and Multidisciplinary Chemistry (ranked #5).