Metal–organic framework nanosheets for fast-response and highly sensitive luminescent sensing of Fe 3

• Published in: Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2016, Vol.4 (28), p.10900-10905
• Main Authors: Xu, Hui, Gao, Junkuo, Qian, Xuefeng, Wang, Jiangpeng, He, Huajun, Cui, Yuanjing, Yang, Yu, Wang, Zhiyu, Qian, Guodong
• Format: Article
• Language: English
• ISSN: 2050-7488; 2050-7496
• DOI: 10.1039/C6TA03065C

The first luminescent two-dimensional MOF nanosheets NTU-9-NS Ti 2 (HDOBDC) 2 (H 2 DOBDC) (H 2 DOBDC = 2,5-dihydroxyterephthalic acid) fabricated via top-down delamination have been realized for the highly sensitive sensing of Fe 3+ with a fast response. The highly dispersive nature and highly accessible active sites on the surface of the 2D NTU-9-NS nanosheets enable them to have close contact with targeted metal ions, which leads to the highly sensitive sensing of Fe 3+ ions, with a fast response time within seconds and the best detection limit performance of 0.45 μM among MOF materials. The fast response and highly sensitive Fe 3+ sensing based on the NTU-9-NS nanosheets sensor material highlights the promise of the two-dimensional MOF nanosheet approach for luminescent sensing applications. This work contributes to the development of research on two-dimensional MOF nanosheets materials with targeted and specific recognition for the application of biological and environmental luminescent sensors.