期刊
MATERIALS LETTERS
卷 166, 期 -, 页码 89-92出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2015.12.061
关键词
Nanoparticles; Luminescence; Carbon dots; pH sensing
资金
- Fundamental Research Funds for the Central Universities [XDJK2015A005, XDJK2016D033]
- Innovative Research Project for Postgraduate Students of Chongqing [CYS14049]
Herein, fluorescent carbon dots (CDs) originated from carnation were creatively synthesized with well distributed size. By detailed characterization, the prepared CDs were mainly composed of C and O as well as limited amount of N, and there existing O-H, N-H, C-H, C=N, C=O, C=C and C-O groups on their surfaces. Significantly, these CDs showed a distinct pH-sensitive feature. To be specific, the fluorescence intensity of CDs exhibited a linear fashion over the pH range from 11.7 to 3.2. Simultaneously, the color of the CDs solution varied from yellow to yellow-orange, and the corresponding hue parameter decreased linearly with the pH value range from 10.6 to 5. All these evidence illustrated that this CDs have potential as colorimetric and fluorescent sensors for pH sensing. Additionally, The CDs were applied for cellular imaging and painting. (C) 2015 Elsevier B.V. All rights reserved.
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