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

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

doi:10.1002/advs.202001623

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

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

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

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 (η_FRET) is presented. Specifically, η_FRET is calculated for a series of model MCSs using simulations, a series of multiporphyrin dendrimers with systematic variation of n_D and interdonor distances is synthesized, and η_FRETs of those dendrimers using transient absorption spectroscopy are measured. The simulations predict η_FRET in the multiporphyrin dendrimers well. In particular, it is found that η_FRET is enhanced by donor-to-donor energy transfer only when structural heterogeneity exists in an MCS, and the relationships between the η_FRET enhancement and the structural parameters of the MCS are revealed.

Original language	English
Article number	2001623
Journal	Advanced Science
Volume	7
Issue number	20
DOIs	https://doi.org/10.1002/advs.202001623
Publication status	Published - 2020 Oct 1

Bibliographical note

Funding Information:
The authors thank Dae Won Cho and Jaeyoung Sung for their initial help and discussion on the project. This work was supported by the midcareer research project (No. 2020R1A2C3004520) of the National Research Foundation of Korea. This work was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT, and Future Planning (No. NRF‐2016R1E1A1A01941978). This work was supported by Institute for Basic Science (No. IBS‐R004).

Publisher Copyright:
© 2020 The Authors. Published by Wiley-VCH GmbH

All Science Journal Classification (ASJC) codes

Medicine (miscellaneous)
Chemical Engineering(all)
Materials Science(all)
Biochemistry, Genetics and Molecular Biology (miscellaneous)
Engineering(all)
Physics and Astronomy(all)

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10.1002/advs.202001623

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title = "Enhancement of Energy Transfer Efficiency with Structural Control of Multichromophore Light-Harvesting Assembly",

abstract = "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 (nD) and interchromophore distances affect the efficiency of energy transfer (ηFRET) is presented. Specifically, ηFRET is calculated for a series of model MCSs using simulations, a series of multiporphyrin dendrimers with systematic variation of nD and interdonor distances is synthesized, and ηFRETs of those dendrimers using transient absorption spectroscopy are measured. The simulations predict ηFRET in the multiporphyrin dendrimers well. In particular, it is found that ηFRET is enhanced by donor-to-donor energy transfer only when structural heterogeneity exists in an MCS, and the relationships between the ηFRET enhancement and the structural parameters of the MCS are revealed.",

author = "Inhwan Oh and Hosoowi Lee and Kim, {Tae Wu} and Kim, {Chang Woo} and Sunhong Jun and Changwon Kim and Choi, {Eun Hyuk} and Rhee, {Young Min} and Jeongho Kim and Jang, {Woo Dong} and Hyotcherl Ihee",

note = "Funding Information: The authors thank Dae Won Cho and Jaeyoung Sung for their initial help and discussion on the project. This work was supported by the midcareer research project (No. 2020R1A2C3004520) of the National Research Foundation of Korea. This work was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT, and Future Planning (No. NRF‐2016R1E1A1A01941978). This work was supported by Institute for Basic Science (No. IBS‐R004). Publisher Copyright: {\textcopyright} 2020 The Authors. Published by Wiley-VCH GmbH",

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AU - Oh, Inhwan

AU - Lee, Hosoowi

AU - Kim, Tae Wu

AU - Kim, Chang Woo

AU - Jun, Sunhong

AU - Kim, Changwon

AU - Choi, Eun Hyuk

AU - Rhee, Young Min

AU - Kim, Jeongho

AU - Jang, Woo Dong

AU - Ihee, Hyotcherl

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PY - 2020/10/1

Y1 - 2020/10/1

N2 - 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 (nD) and interchromophore distances affect the efficiency of energy transfer (ηFRET) is presented. Specifically, ηFRET is calculated for a series of model MCSs using simulations, a series of multiporphyrin dendrimers with systematic variation of nD and interdonor distances is synthesized, and ηFRETs of those dendrimers using transient absorption spectroscopy are measured. The simulations predict ηFRET in the multiporphyrin dendrimers well. In particular, it is found that ηFRET is enhanced by donor-to-donor energy transfer only when structural heterogeneity exists in an MCS, and the relationships between the ηFRET enhancement and the structural parameters of the MCS are revealed.

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

Abstract

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