期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 496, 期 -, 页码 8-15出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2017.02.013
关键词
Luminescent carbon dots; Mesoporous aluminas; Temperature sensing
资金
- National Natural Science Foundations of China [51203053, 21571067]
- Guangzhou Science & Technology Project [201605112017209]
- Project for Construction of High-level University in Guangdong Province
- Guangdong Natural Science Foundation [S2013030012842]
Owning to the hydrogen-band interactions, blue-light-emitting luminescent carbon dots (CDs) synthesized by one-pot hydrothermal treatment were successfully assembled into Eu3+ doped mesoporous aluminas (MAs). Interesting, dual-emissive CDs/MAs co-doped materials with higher quantum yield (QY), long-term stability, mesoporous structure, high thermal stability, and large surface areas were obtained. Furthermore, the obtained CDs/MAs co-doped materials possessed tunable color, and excellent temperature sensitivity due to the existing of energy transfer between CDs and Eu3+ ion. The energy transfer efficiency (eta) and energy transfer probability (P) for CDs/Eu3+ co-doped materials possessed a monotonous tendency with the change of Eu3+ content. More importantly, the dual-emissive colors can be regularly adjusted through regulating their excitation wavelength or relative mass ratio. In addition, the emission intensity of the CDs/MAs co-doped materials gradually decreased with increasing temperature showing the clear temperature dependence, this dual-emissive thermometer was with high sensitivity, owning a great fitted curve in the range from 100 to 360 K under a single wavelength excitation. (C) 2017 Elsevier Inc. All rights reserved.
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