Crystal Structures and Side-arm Dynamics of Cerium<i>meso</i>-Tetrathienylporphyrin Double-decker Complexes

Shinozaki, Yoshinao; Mizumura, Yuta; Kida, Yuki; Sugawa, Kosuke; Wada, Kaori; Kishiro, Sachiko; Otsuki, Joe

doi:10.1246/cl.160549

Cited by 1 publication

(1 citation statement)

References 26 publications

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“…[47,[56][57] As the one-by-one assignment of 1 HNMR signals to individual protons was not possible and only the assignment of peaks to the protons of porphine, pyridyl, and phenyl fragments was done, the least-squares fitting of the calculated chemicals hifts to the observed shifts was done on af ragment basis. In addition to the parameters listed above,t he effects of bending of the porphine-pyridyl bond andd oming of the porphyrinp lane [58] were also investigated, but ad istortionless, planarc onformation gave the best result. Details are given in the Supporting Information.…”

Section: Structure Of the Trimermentioning

confidence: 99%

A Light‐Harvesting/Charge‐Separation Model with Energy Gradient Made of Assemblies of meta‐Pyridyl Zinc Porphyrins

Otsuki

Okumura

Sugawa

et al. 2020

Chemistry A European J

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Self-assembly of porphyrins is af ascinating topic, not only form imickingc hlorophyll assembliesi np hotosynthetic organisms, but also for the potential of creatingm olecular-level devices. Herein, zinc porphyrin derivativesb earing a meta-pyridyl group at the meso position were prepared and their assemblies studied in chloroform.A mong the porphyrins studied,o ne with ac arbamoylpyridyl moiety gave ad istinct 1 HNMR spectrum in CDCl 3 ,w hich allowed the supramolecular structure in solution to be probed in detail. Ring-current-induced chemical-shift changes in the 1 HNMR spectrum, together with vapor-pressure osmometry and diffusion-orderedN MR spectroscopy,a mong othere vidence, suggested that the porphyrin molecules form a trimerw ith at riangular cone structure. Incorporation of ad irectly linked porphyrin-ferrocene dyad with the same assembling properties in the assembliesl ed to ar are example of al ight-harvesting/charge-separation system in which an energyg radient is incorporated and reductive quenching occurs.

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