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

Research output: Contribution to journalArticle

11 Citations (Scopus)

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
Pages (from-to)16175-16181
Number of pages7
JournalPhysical Chemistry Chemical Physics
Volume13
Issue number36
DOIs
Publication statusPublished - 2011 Sep 28

Fingerprint

Porphyrins
porphyrins
Zinc
zinc
Electrons
electrons
naphthalene
Molecular orbitals
linear systems
conjugation
electronics
linkages
Electronic structure
Linear systems
molecular orbitals
electronic structure

All Science Journal Classification (ASJC) codes

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

Cite this

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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.",
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Electron delocalization in various triply linked zinc(ii) porphyrin arrays : Role of antiaromatic junctions between aromatic porphyrins. / Cho, Sung; Yoon, Min Chul; Kim, Kil Suk; Kim, Pyosang; Kim, Dongho.

In: Physical Chemistry Chemical Physics, Vol. 13, No. 36, 28.09.2011, p. 16175-16181.

Research output: Contribution to journalArticle

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