Versatile Cl-decorated CPM-5 as a blue LED and luminescent sensor for selective Fe sensing and temperature detection

• Published in: CrystEngComm Vol. 24; no. 4; pp. 7149 - 7156
• Main Authors: Zhang, Jian-Wei, Yu, Rui-Ying, Li, Xi, Xu, Hai-Qun, Cui, Jin-Hai, Hu, Xin-Cheng, Li, Jie-Qiong
• Format: Journal Article
• Language: English
• Published: 17.10.2022
• ISSN: 1466-8033
• DOI: 10.1039/d2ce01146h

The development and utilization of versatile metal-organic framework (MOF) materials for fluorescence applications have received the attention of many researchers. In this study, we constructed a versatile luminescent Cl-decorated CPM-5 (CPM-5-Cl) by employing InCl 3 and H 3 BTC in a DMF/H 2 O/HCl solvent system. The as-synthesized CPM-5-Cl was characterized using PXRD, SEM, EDX mapping, and TGA-DTG. Interestingly, CPM-5-Cl exhibited not only excellent thermal and water stability but also unique solid-state fluorescence emission performance. The CIE coordinate and luminescence photo under UV light indicated CPM-5-Cl as a promising candidate for blue light-emitting diodes. Furthermore, as a ratiometric thermometer, CPM-5-Cl exhibited highly sensitive temperature sensing over a wide temperature range (80-300 K), and the maximum relative sensitivity of CPM-5-Cl reached 3.08% K −1 at 300 K. Moreover, CPM-5-Cl exhibited high selectivity for Fe 3+ detection with low detection limits (2.25 × 10 −4 M) in aqueous solution. It was tested for anti-interference properties, recyclability, and the mechanism of Fe 3+ sensing. Our research provides new opportunities for the design and synthesis of versatile fluorescent In-MOFs. A versatile luminescent Cl-decorated CPM-5 was successfully afforded by using a DMF/H 2 O/HCl solvent system. Interestingly, the highly stable CPM-5-Cl is suitable for application in Fe 3+ sensing and as a blue LED and ratiometric thermometer.