Luminescent monomeric and dimeric Ru(II) acyclic carbene complexes as selective sensors for NH3/amine vapor and humidity

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Original languageEnglish
Pages (from-to)14103-14110
Journal / PublicationChemical Science
Volume12
Issue number42
Online published5 Oct 2021
Publication statusPublished - 14 Nov 2021

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Abstract

A new class of luminescent bis(bipyridyl) Ru(II) pyridyl acyclic carbene complexes with environmentally-sensitive dimerization equilibrium have been developed. Owing to the involvement of the orbitals of the diaminocarbene ligand in the emissive excited state, the phosphorescence properties of these complexes are strongly affected by H-bonding interactions with various H-bonding donor/acceptor molecules. With the remarkable differences in the emission properties of the monomer, dimer, and H-bonded amine adducts together with the change of the dimerization equilibrium, these complexes can be used as luminescent gas sensors for humidity, ammonia, and amine vapors. With the responses to amines and humidity and the corresponding change in the luminescence properties, a proof-of-principle for binary optical data storage with a reversible concealment process has been described.

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Luminescent monomeric and dimeric Ru(II) acyclic carbene complexes as selective sensors for NH3/amine vapor and humidity. / Han, Jingqi; Cheng, Shun-Cheung; Yiu, Shek-Man et al.
In: Chemical Science, Vol. 12, No. 42, 14.11.2021, p. 14103-14110.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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