Issue 5, 2014

Light harvesting vesicular donor–acceptor scaffold limits the rate of charge recombination in the presence of an electron donor

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.

Graphical abstract: Light harvesting vesicular donor–acceptor scaffold limits the rate of charge recombination in the presence of an electron donor

Supplementary files

Article information

Article type
Paper
Submitted
03 Oct 2013
Accepted
28 Nov 2013
First published
29 Nov 2013

Energy Environ. Sci., 2014,7, 1661-1669

Author version available

Light harvesting vesicular donor–acceptor scaffold limits the rate of charge recombination in the presence of an electron donor

R. T. Cheriya, A. R. Mallia and M. Hariharan, Energy Environ. Sci., 2014, 7, 1661 DOI: 10.1039/C3EE43293A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements