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

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


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.

Original languageEnglish
Article number2001623
JournalAdvanced Science
Issue number20
Publication statusPublished - 2020 Oct 1

Bibliographical note

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

All Science Journal Classification (ASJC) codes

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


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