Cheriya, Rijo T. ; Mallia, Ajith R. ; Hariharan, Mahesh (2014) Light harvesting vesicular donor–acceptor scaffold limits the rate of charge recombination in the presence of an electron donor Energy Environ. Sci., 7 (5). pp. 1661-1669. ISSN 1754-5692
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Official URL: http://doi.org/10.1039/c3ee43293a
Related URL: http://dx.doi.org/10.1039/c3ee43293a
Abstract
We report the synthesis and excited state properties of a single component light harvesting donor–acceptor dyad (R/S)-NP(OH)2 containing an α,β-dihydroxypropyl side-chain that can undergo molecule–bilayer–vesicle–gel–crystal transition. By virtue of steric hindrance offered by orthogonal naphthalimide and 2,6-diisopropylphenyl substituents, very weak H-type excitonic interactions between the perylenimide units resulted in high fluorescence quantum yield in the dyad-based metastable vesicular gel having a near-quantitative excitation energy transfer from naphthalimide to perylenimide. Femtosecond transient absorption measurements of the dyad (R/S)-NP(OH)2 : indole co-gel show that the vesicular scaffold promoted extension of the survival time of charge separated states (∼1.4 ns) when compared to ultrafast charge recombination (∼6 ps) in dyad (R/S)-NP(OH)2 : indole solution.
Item Type: | Article |
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Source: | Copyright of this article belongs to ResearchGate GmbH. |
ID Code: | 126864 |
Deposited On: | 17 Oct 2022 05:33 |
Last Modified: | 17 Oct 2022 05:33 |
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