Electron delocalization in various triply linked zinc(ii) porphyrin arrays: Role of antiaromatic junctions between aromatic porphyrins

Sung Cho, Min Chul Yoon, Kil Suk Kim, Pyosang Kim, Dongho Kim*

*Corresponding author for this work

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

A series of meso-meso, β-β, β-β triply linked linear, radial and square-type zinc(ii) porphyrin arrays consist of the constituent porphyrin units and naphthalene junctions. To understand the unique nature of triply linked porphyrin arrays, numerous research activities have been focused on the electronic structures of the constituent porphyrin units. In this study, however, we have paid attention to the role of the naphthalene junction in the electronic delocalization of various triply linked porphyrin arrays. On the basis of our study, we have unveiled that unique φ-conjugation behaviors in triply linked porphyrin arrays are induced by their intrinsic molecular orbital interactions and subsequently by antiaromatic junctions. Furthermore, the structural deformation by triple linkages gives rise to a deteriorative effect on the electronic delocalization between inner and outer porphyrin units. Finally, we propose a different type of electron delocalization in linear multichromophoric systems by alternating aromatic and antiaromatic units.

Original languageEnglish (US)
Pages (from-to)16175-16181
Number of pages7
JournalPhysical Chemistry Chemical Physics
Volume13
Issue number36
DOIs
StatePublished - Sep 28 2011

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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