期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 59, 期 38, 页码 16747-16754出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202007451
关键词
animal toxicity; biosensors; circulating tumor cells; WO3-x dots; WS2 nanosheets
资金
- National Natural Science Foundation of China [21675022, 21775018]
- Natural Science Foundation of Jiangsu Province [BK20170084]
- Fundamental Research Funds for the Central Universities
The exceptional nature of WO3-x dots has inspired widespread interest, but it is still a significant challenge to synthesize high-quality WO3-x dots without using unstable reactants, expensive equipment, and complex synthetic processes. Herein, the synthesis of ligand-free WO3-x dots is reported that are highly dispersible and rich in oxygen vacancies by a simple but straightforward exfoliation of bulk WS2 and a mild follow-up chemical conversion. Surprisingly, the WO3-x dots emerged as co-reactants for the electrochemiluminescence (ECL) of Ru(bpy)(3)(2+) with a comparable ECL efficiency to the well-known Ru(bpy)(3)(2+)/tripropylamine (TPrA) system. Moreover, compared to TPrA, whose toxicity remains a critical issue of concern, the WO3-x dots were ca. 300-fold less toxic. The potency of WO3-x dots was further explored in the detection of circulating tumor cells (CTCs) with the most competitive limit of detection so far.
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