Issue 13, 2019

Triphenylethylene-based biimidazoles showing preferable detection of explosives and their rhenium complexes undergoing chiral and cistrans transformations

Abstract

For the first time rhenium-containing biimidazoles have been structurally reported with two triphenylethylene units following chiral and cistrans transformations simultaneously. Crystal structures show that the biimidazole ligand exhibits an (M)-trans-(P) configuration, whereas the (M)-cis-(M) mode was observed in the rhenium complex, showing cistrans configurations between biimidazoles and the relative chiral isomers among adjacent triphenylvinylimidazole units. Furthermore, aiming to verify the association rule between spectral behaviours and orientational changes, fluorescence titration experiments were performed for full comparison where the detection performance for explosives in an aqueous phase depends on the alternation of the molecular structure, including the introduction of two alkyl chains and fac-[Re(CO)3Cl]. In addition, computational studies on molecular conformations with different torsion angles for related compounds were carried out.

Graphical abstract: Triphenylethylene-based biimidazoles showing preferable detection of explosives and their rhenium complexes undergoing chiral and cis–trans transformations

Supplementary files

Article information

Article type
Paper
Submitted
06 Nov 2018
Accepted
12 Feb 2019
First published
13 Feb 2019

J. Mater. Chem. C, 2019,7, 3765-3771

Triphenylethylene-based biimidazoles showing preferable detection of explosives and their rhenium complexes undergoing chiral and cistrans transformations

T. Tao, Y. Gan, Y. Zhao, J. Yu, Q. Huang, Z. Yang, M. Chen and W. Huang, J. Mater. Chem. C, 2019, 7, 3765 DOI: 10.1039/C8TC05583A

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