Jiao, Yuan, Meng, Yating, Lu, Wenjing, Gao, Yifang, Liu, Yang, Gong, Xiaojuan, Liu, Yang, Shuang, Shaomin, and Dong, Chuan (2020) Design of long-wavelength emission carbon dots for hypochlorous detection and cellular imaging. Talanta, 219. 121170.

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Abstract

A facile strategy for the preparation of nitrogen and phosphorus co-doped carbon dots (N, P-CDs) with long-wavelength emission is attractively proposed in one-pot hydrothermal strategy. The resulting N, P-CDs hold exceptional optical features and display excitation wavelength-independent properties with the emission wavelength at 590 nm, which enable it with the satisfactory relative quantum yield (QY) of 15.6% in long-wavelength region. In addition, the proposed N, P-CDs demonstrates specific selectivity towards ClO− over other competitive reactive oxygen species and exhibits rapid fluorescence response time to ClO−. Moreover, the N, P-CDs exhibits low-cytotoxicity and excellent cell membrane permeability for recognizing ClO− in SMMC-7721 cells, which demonstrates their enormous potential in biological system.

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