Synthesis of chlorophyll-BODIPY conjugates and their intramolecular excitation energy transfer

Author:

Mori Yuna1,Nakamura Yugo1,Yasui Mizuki1,Tamiaki Hitoshi1

Affiliation:

1. Graduate School of Life Sciences, Ritsumeikan University, Kusatsu, Shiga 525-8577, Japan

Abstract

Zinc 3-hydroxymethyl-pyropheophorbides-[Formula: see text] covalently linked with an 8-aryl-1,3,5,7-tetramethyl-BODIPY moiety in the 17-substituent were synthesized by chemically modifying naturally occurring chlorophyll(Chl)-[Formula: see text]. The synthetic Chl–BODIPY conjugates in tetrahydrofuran exhibited sharp visible absorption and weak circular dichroism spectra, indicating that their molecules were fully dispersed in the solution. In their ground states, no intramolecular interaction between the Chl and BODIPY parts was observed. By contrast, singlet excitation energy was efficiently transferred from the photoexcited BODIPY moiety to zinc chlorin moiety within their molecules. The intramolecular energy transfer efficiencies exceeded 90% and were independent of the linkages including ester and amide bonds as well as methylene and hexamethylene spacers.

Funder

JSPS KAKENHI

Scientific Research on Innovative Areas “Innovation for Light-Energy Conversion (I4LEC)”

Publisher

World Scientific Pub Co Pte Ltd

Subject

General Chemistry

Cited by 1 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Hydroporphyrin-BODIPY arrays;Journal of Porphyrins and Phthalocyanines;2024-04

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