Design of long-wavelength emission carbon dots for hypochlorous detection and cellular imaging

Journal Publication ResearchOnline@JCU
Jiao, Yuan;Meng, Yating;Lu, Wenjing;Gao, Yifang;Liu, Yang;Gong, Xiaojuan;Liu, Yang;Shuang, Shaomin;Dong, Chuan
Yang Liu
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.

Journal

Talanta

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Volume

219

ISBN/ISSN

1873-3573

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Pages Count

8

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Publisher

Elsevier

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EISSN

N/A

DOI

10.1016/j.talanta.2020.121170