International Journal of Photoenergy

International Journal of Photoenergy / 2006 / Article
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Light-harvesting J-aggregates

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Volume 2006 |Article ID 029623 | https://doi.org/10.1155/IJP/2006/29623

A. Pugzlys, P. R. Hania, R. Augulis, K. Duppen, P. H. M. van Loosdrecht, "Cylindrical aggregates of 5,5',6,6'-tetrachlorobenzimida-carbocyanine amphiphilic derivatives: Structure-related optical properties and exciton dynamics", International Journal of Photoenergy, vol. 2006, Article ID 029623, 9 pages, 2006. https://doi.org/10.1155/IJP/2006/29623

Cylindrical aggregates of 5,5',6,6'-tetrachlorobenzimida-carbocyanine amphiphilic derivatives: Structure-related optical properties and exciton dynamics

Received22 May 2006
Revised26 Jun 2006
Accepted28 Jul 2006
Published12 Oct 2006

Abstract

The static and time-resolved optical response of 5,5,6,6-tetrachlorobenzimidacarbocyanine chromophore-based tubular double-wall molecular aggregates is studied. The linear dichroism and absorption spectra have the same basic structure for all aggregates investigated essentially showing a set of narrow and highly polarized bands originating from inner and outer wall excitations. The exact positions and strengths of absorption bands are influenced by the choice of side groups and various additives. Time-resolved fluorescence measurements show a substantial speeding of the fluorescence decay upon aggregation, mainly resulting from collective effects. Pump-probe experiments evidence slow inner-to-outer and fast outer-to-inner wall energy transfers between the walls of the tubules.

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Copyright © 2006 A. Pugzlys et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


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