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m‑Phenylene-Linked Dipyrrins and Their Boron–Difluoride Complexes as Variously Shaped Macrocyclic Oligomers

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posted on 2016-10-10, 19:44 authored by Junji Uchida, Takashi Nakamura, Masaki Yamamura, Gento Yamaguchi, Tatsuya Nabeshima
The effectiveness of a m-phenylene linker, which has rigidity as well as rotational flexibility, is presented to produce a series of variously shaped macrocyclic oligomers of dipyrrins and BODIPYs, whose structures were revealed by X-ray crystallography and 1H NMR analysis. Although the chemical structures of the repeating units are the same for dipyrrin/BODIPY oligomers, their absorbance and emission properties changed significantly depending on the size and shape of the macrocycles.

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