Single-Acetylene Linked Porphyrin Nanorings | Zendy

Michel Rickhaus | Zendy; Andreas Vargas Jentzsch | Zendy; Lara Tejerina | Zendy; Isabell Grübner | Zendy; Michael Jirásek | Zendy; Timothy D. W. Claridge | Zendy; Harry L. Anderson | Zendy

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Single-Acetylene Linked Porphyrin Nanorings

Author(s) -

Michel Rickhaus,

Andreas Vargas Jentzsch,

Lara Tejerina,

Isabell Grübner,

Michael Jirásek,

Timothy D. W. Claridge,

Harry L. Anderson

Publication year - 2017

Publication title -

journal of the american chemical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 7.115

H-Index - 612

eISSN - 1520-5126

pISSN - 0002-7863

DOI - 10.1021/jacs.7b10710

Subject(s) - chemistry , porphyrin , random hexamer , delocalized electron , dihedral angle , sonogashira coupling , singlet state , crystallography , acetylene , annulene , density functional theory , photochemistry , excited state , symmetry (geometry) , computational chemistry , molecule , atomic physics , organic chemistry , palladium , hydrogen bond , physics , catalysis , geometry , mathematics

The synthesis of ethyne-linked porphyrin nanorings has been achieved by template-directed Sonogashira coupling. The cyclic hexamer and octamer are predicted by density functional theory to adopt low symmetry conformations, due to dihedral twists between neighboring porphyrin units, but their symmetries are effectively D 6h and D 8h , respectively, in solution by 1 H NMR. The fluorescence spectra indicate that the singlet excited states of these nanorings are highly delocalized.

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