A self-calibrated luminescent thermometer based on nanodiamond-Eu/Tb hybrid materials. Issue 22 (14th May 2019)

• Record Type: Journal Article
• Authors: Wu, Xue-Ying; Zhao, Qi; Zhang, Dong-Xue; Liang, Ya-Chuan; Zhang, Kui-Kui; Liu, Qian; Dong, Lin; Shan, Chong-Xin
• Is Part Of: Dalton transactions. Volume 48:Issue 22(2019)
• Page Start: 7910
• Page End: 7917
• Publication Date: 2019-05-14
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c9dt00850k
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : ND-PMA-RE was synthesized and the ND-PMA-Eu/Tb could be served as a self-referencing luminescent thermometer due to the temperature-dependent luminescence performance. Abstract : Luminescent hybrid materials based on nanodiamonds (NDs) and rare earth ions have been successfully synthesized by covalently modifying NDs with pyromellitic acid (PMA) which is capable of coordinating to Eu 3+ and Tb 3+ ions. With NDs acting as a host matrix, the PMA and rare earth ions serve as an organic sensitizer and activator, respectively, yielding a highly bright hybrid composite. Interestingly, for the co-doped hybrid composites ND-PMA-Eu/Tb, the intensity ratio of the two emissions, 5 D4 → 7 F5 transition (Tb 3+ ) to 5 D0 → 7 F2 transition (Eu 3+ ), is linearly related to temperature in the range from 77 K to 277 K. Therefore, the hybrid could be developed as a self-calibrated ratiometric luminescent thermometer due to its temperature-dependent luminescence performance.