Journal
JOURNAL OF MATERIALS CHEMISTRY C
Volume 3, Issue 45, Pages 11874-11880Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5tc02790j
Keywords
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Funding
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR) [1321760011]
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A microporous hydrogen-bonded organic framework (HOF) derived from a polyhedral oligomeric silsesquioxane (POSS) intermediate and an aggregation-induced emission (AIE) luminogen tetraphenylethene (TPE) derivative has been synthesized and structurally characterized by various methods. This unique HOF exhibits a permanent porosity with a Brunauer-Emmett-Teller (BET) surface area of 101.9 m(2) g(-1). This HOF could be well dispersed in organic solvents in the form of nanoparticles with a size of a few hundred nanometers. These nanoparticles are highly fluorescent in organic solution, and exhibit a high fluorescence quenching selectivity towards copper ions. Furthermore, the fluorescence of this HOF could be recovered by the removal of copper ions upon addition of cyanide and, more interestingly, this process could be repeated several times without considerably sacrificing the sensing activity towards copper ions.
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