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A Red‐Emitting Luminescent Material Capable of Detecting Low Water Content in Organic Solvents
Author(s) -
Wang Tianren,
Li Huanrong
Publication year - 2016
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201601616
Subject(s) - luminescence , content (measure theory) , environmental chemistry , chemistry , environmental science , materials science , optoelectronics , mathematical analysis , mathematics
A new red‐emitting luminescent material was prepared from a gel formed by simply mixing EuCl 3 ⋅ 6 H 2 O and 4′‐ para ‐phenylcarboxyl‐2,2′:6′,2′′‐terpyridine (Hcptpy) in a molar ratio of 1:2 in anhydrous ethanol at room temperature. It shows bright red luminescence dominated by the 5 D 0 → 7 F 2 transition of Eu 3+ , a long lifetime (1.16 ms), a high absolute quantum yield (48.2 %), and good thermostability (stable up to 500 °C). In addition, the luminescence of the material can be easily quenched by contact with water, which makes it suitable for detecting low contents of water (0.1–1.5 vol %) in common organic solvents such as diethyl ether and THF.