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Aggregation phenomena in photobicyclised pyridinium salts

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Abstract

The possible formation of aggregates in a solution of two planar heterocyclic salts, 2-phenylbenzo[8,9]quinolizino[4,5,6,7-fed]phenanthridinylium tetrafluoroborate (PQPBF4) and thienyl-substituted 2-phenylbenzo[ij]pyrido[2,1,6-de]dithieno[3,2-b:2′,3′-g]quinolizin-13-ium perchlorate (BPDTQClO4), was investigated in organic solvents and in water, by the analysis of their UV-Vis and fluorescence spectra. The results provided evidence for the formation of H-aggregates in water, a conclusion supported by theoretical calculations of the transition energies of the cationic monomers (PQP+ and BPDTQ+) and of the dicationic π-stacked H-dimers in water.

Graphical abstract: Aggregation phenomena in photobicyclised pyridinium salts

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Publication details

The article was received on 29 Jul 2017, accepted on 24 Oct 2017 and first published on 25 Oct 2017


Article type: Paper
DOI: 10.1039/C7NJ02788E
Citation: New J. Chem., 2017, Advance Article
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    Aggregation phenomena in photobicyclised pyridinium salts

    A. Aracena, M. C. Rezende, M. V. Encinas, C. Vergara and S. O. Vásquez, New J. Chem., 2017, Advance Article , DOI: 10.1039/C7NJ02788E

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