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Issue 19, 2016
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Energy redistribution dynamics in triarylamine–triarylborane containing hexaarylbenzenes

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Abstract

Two hexaarylbenzenes (HAB) 1 and 2 each decorated by three triarylamines (TAA) as electron donors and three triarylboranes (TAB) as electron acceptors in a symmetric (1) and asymmetric (2) fashion as well as one model compound (3) with only one donor–acceptor pair were investigated by ultrafast transient absorption and fluorescence upconversion spectroscopy. Fluorescence anisotropy measurements revealed energy redistribution between localised, partly relaxed CT-states of the HABs 1 and 2 induced by dipole–dipole interaction with energy transfer time constants of ca. 3 ps. These results manifest symmetry breaking in the formally symmetric HAB 1 upon photoexcitation.

Graphical abstract: Energy redistribution dynamics in triarylamine–triarylborane containing hexaarylbenzenes

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Article information


Submitted
22 Mar 2016
Accepted
18 Apr 2016
First published
22 Apr 2016

Phys. Chem. Chem. Phys., 2016,18, 13403-13412
Article type
Paper

Energy redistribution dynamics in triarylamine–triarylborane containing hexaarylbenzenes

M. Steeger, M. Holzapfel, A. Schmiedel and C. Lambert, Phys. Chem. Chem. Phys., 2016, 18, 13403
DOI: 10.1039/C6CP01923D

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