A dual-emission probe to detect moisture and water in organic solvents based on green-Tb3+ post-coordinated metal-organic frameworks with red carbon dots

Dalton Transactions : an International Journal of Inorganic Chemistry
Jing-Xing Wu, Bing Yan

Abstract

Using p-phenylenediamine as a precursor, p-carbon dots (p-CDs) with strong red-light emission were encapsulated into a metal-organic framework (MOF) followed by introduction of green light-emitting Tb3+ to form a two-color light-emitting hybrid (Tb3+@p-CDs/MOF). The as-prepared fluorescent-functionalized MOF not only maintained the excellent optical properties of p-CDs and Tb3+ to give strong emission, but also had good chemical and physical properties. The chosen p-CDs were aggregated readily in water, which led to only very weak photoluminescence, whereas the opposite effect was noted in the organic solvents ethanol, dimethylformamide and cyclopropane. Therefore, the as-prepared hybrid showed different color light emission in water or organic solvents, and acted as a ratiometric and colorimetric fluorescent probe to detect water content in organic solvents. Moreover, this hybrid also served as a ratiometric luminescent sensor for detection of relative humidity (RH): the ratio of light intensity at 545 nm to that at 605 nm increased linearly with increasing RH from 33.0% to 85.1% in the atmosphere.

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Citations

Feb 15, 2019·Chemical Record : an Official Publication of the Chemical Society of Japan ... [et Al.]·Jianying WangLei Wang
Nov 9, 2018·The Analyst·Yongming Guo, Wei Zhao
Mar 3, 2018·Dalton Transactions : an International Journal of Inorganic Chemistry·Longqing MiHyo Jin Seo
Oct 27, 2017·Dalton Transactions : an International Journal of Inorganic Chemistry·Jing-Xing Wu, Bing Yan
Feb 23, 2019·Advanced Materials·Shuangyan WuPeng Cheng
Nov 10, 2020·Chemical Society Reviews·Mengzhen ZhangChunhua Yan
Jan 15, 2021·Dalton Transactions : an International Journal of Inorganic Chemistry·Jin-Ping GaoXian-Ming Zhang
May 21, 2021·Analytical and Bioanalytical Chemistry·Pengxiang WangYaqing Liu
Nov 8, 2017·Inorganic Chemistry·Philipp MüllerStefan Kaskel
Aug 15, 2021·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Xiangying SunHuaiqian Wang
Oct 8, 2021·Analytical Methods : Advancing Methods and Applications·Manivannan Madhu, Wei-Lung Tseng

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