68874-21-5Relevant articles and documents
Combined effects of ion-pairing on multi-emissive properties of benzimidazolium salts
Di Carlo, Gabriele,Forni, Alessandra,Moretti, Paola,Marinotto, Daniele,Botta, Chiara,Pizzotti, Maddalena,Tessore, Francesca,Cariati, Elena
, p. 4182 - 4188 (2021)
The possibility to control luminescence properties of purely organic emitting salts is receiving an ever-growing interest. A full understanding of the manifold effects of counterions on the photophysical properties of charged luminophors deserves thorough
NMR studies of 2-aryl derivatives of benzimidazole, benzimidazolium ion, and benzimidazoline
Lee, Chang Kiu,Lee, In-Sook Han
experimental part, p. 425 - 433 (2009/06/18)
A series of 2-arylbenzimidazoles, 2-aryl-1,3-dimethylbenzimidazolium iodides, and 2-aryl-1,3-dimethylbenzimidazolines were prepared and their NMR spectra were examined. The substituent parameters were calculated for 2-benzimidazolyl, 2-benzimidazoliumyl, and 2-benzimidazolinyl groups on the chemical shifts of the protons and the carbons of benzene ring. The 2-benzimidazoliumyl group was found to cause a significant up-field shift of the ipso-carbon signal and down-field shift for the ortho- and para-carbon signals. On the other hand, the 2-benzimidazolyl and the 2-benzimidazolinyl groups cause down-field shift of the ipso-carbon signals but cause almost negligible change on the other carbon signals.
