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Enhancement of Energy Transfer Efficiency with Structural Control of Multichromophore Light-Harvesting Assembly

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Title
Enhancement of Energy Transfer Efficiency with Structural Control of Multichromophore Light-Harvesting Assembly
Author(s)
Inhwan Oh; Hosoowi Lee; Tae Wu Kim; Chang Woo Kim; Sunhong Jun; Changwon Kim; Eun Hyuk Choi; Young Min Rhee; Jeongho Kim; Woo-Dong Jang; Hyotcherl Ihee
Subject
energy transfer, ; Forster resonance energy transfer (FRET), ; light harvesting, ; multichromophore systems
Publication Date
2020-10
Journal
ADVANCED SCIENCE, v.7, no.20, pp.2001623
Publisher
Wiley-VCH GmbH
Abstract
© 2020 The Authors. Published by Wiley-VCH GmbH. Multichromophore systems (MCSs) are envisioned as building blocks of molecular optoelectronic devices. While it is important to understand the characteristics of energy transfer in MCSs, the effect of multiple donors on energy transfer has not been understood completely, mainly due to the lack of a platform to investigate such an effect systematically. Here, a systematic study on how the number of donors (n(D)) and interchromophore distances affect the efficiency of energy transfer (eta(FRET)) is presented. Specifically,eta(FRET)is calculated for a series of model MCSs using simulations, a series of multiporphyrin dendrimers with systematic variation ofn(D)and interdonor distances is synthesized, and eta(FRET)s of those dendrimers using transient absorption spectroscopy are measured. The simulations predict eta(FRET)in the multiporphyrin dendrimers well. In particular, it is found that eta(FRET)is enhanced by donor-to-donor energy transfer only when structural heterogeneity exists in an MCS, and the relationships between the eta(FRET)enhancement and the structural parameters of the MCS are revealed
URI
https://pr.ibs.re.kr/handle/8788114/7610
DOI
10.1002/advs.202001623
ISSN
2198-3844
Appears in Collections:
Center for Nanomaterials and Chemical Reactions(나노물질 및 화학반응 연구단) > 1. Journal Papers (저널논문)
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