title: Luminescent properties and energy transfer of luminescent carbon dots assembled mesoporous Al(2)O(3): Eu(3) co-doped materials for temperature sensing.
abstract: 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 (η) 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 360K under a single wavelength excitation.
authors.affiliation: Guangdong Provincial Engineering Technology Research Center for Optical Agriculture, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, PR China.
authors.forename: Youling
authors.initials: Y
authors.lastname: He
authors.affiliation: Guangdong Provincial Engineering Technology Research Center for Optical Agriculture, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, PR China.
authors.forename: Jiangling
authors.initials: J
authors.lastname: He
authors.affiliation: Guangdong Provincial Engineering Technology Research Center for Optical Agriculture, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, PR China.
authors.forename: Haoran
authors.initials: H
authors.lastname: Zhang
authors.affiliation: Guangdong Provincial Engineering Technology Research Center for Optical Agriculture, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, PR China.
authors.forename: Yingliang
authors.initials: Y
authors.lastname: Liu
authors.affiliation: Guangdong Provincial Engineering Technology Research Center for Optical Agriculture, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, PR China. Electronic address: tleibf@scau.edu.cn.
authors.forename: Bingfu
authors.initials: B
authors.lastname: Lei
keywords: Luminescent carbon dots; Mesoporous aluminas; Temperature sensing