Perturbation of electronic states and energy relaxation dynamics in a series of phenylene bridged ZnII porphyrin dimers

Sung Cho, Min Chul Yoon, Chul Hoon Kim, Naoki Aratani, Goro Mori, Taiha Joo, Atsuhiro Osuka, Dongho Kim

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

We have investigated the perturbed electronic states and energy relaxation dynamics of a series of phenylene bridged ZnIIorphyrin dimers to reveal the effects of phenylene bridges by using computational and time-resolved spectroscopic methods. The electronic states of ZnIIorphyrin dimers are largely perturbed by the interchromophore interactions that can be controlled by the phenylene bridges; linking position and number of phenyl rings. On the basis of our observations, we can gain further insight into the dipole-dipole interactions and through-bond/through-space electronic exchange interactions between the neighboring porphyrin moieties, which provides a firm basis for further understanding the modification of photophysical properties caused by the phenylene bridge in multiporphyrin assemblies as artificial light-harvesting apparatus.

Original languageEnglish
Pages (from-to)14881-14888
Number of pages8
JournalJournal of Physical Chemistry C
Volume111
Issue number40
DOIs
Publication statusPublished - 2007 Oct 11

Fingerprint

Porphyrins
Electronic states
porphyrins
Dimers
dimers
perturbation
electronics
dipoles
Exchange interactions
interactions
assemblies
energy
rings

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

Cite this

Cho, Sung ; Yoon, Min Chul ; Kim, Chul Hoon ; Aratani, Naoki ; Mori, Goro ; Joo, Taiha ; Osuka, Atsuhiro ; Kim, Dongho. / Perturbation of electronic states and energy relaxation dynamics in a series of phenylene bridged ZnII porphyrin dimers. In: Journal of Physical Chemistry C. 2007 ; Vol. 111, No. 40. pp. 14881-14888.
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Perturbation of electronic states and energy relaxation dynamics in a series of phenylene bridged ZnII porphyrin dimers. / Cho, Sung; Yoon, Min Chul; Kim, Chul Hoon; Aratani, Naoki; Mori, Goro; Joo, Taiha; Osuka, Atsuhiro; Kim, Dongho.

In: Journal of Physical Chemistry C, Vol. 111, No. 40, 11.10.2007, p. 14881-14888.

Research output: Contribution to journalArticle

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T1 - Perturbation of electronic states and energy relaxation dynamics in a series of phenylene bridged ZnII porphyrin dimers

AU - Cho, Sung

AU - Yoon, Min Chul

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AU - Aratani, Naoki

AU - Mori, Goro

AU - Joo, Taiha

AU - Osuka, Atsuhiro

AU - Kim, Dongho

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AB - We have investigated the perturbed electronic states and energy relaxation dynamics of a series of phenylene bridged ZnIIorphyrin dimers to reveal the effects of phenylene bridges by using computational and time-resolved spectroscopic methods. The electronic states of ZnIIorphyrin dimers are largely perturbed by the interchromophore interactions that can be controlled by the phenylene bridges; linking position and number of phenyl rings. On the basis of our observations, we can gain further insight into the dipole-dipole interactions and through-bond/through-space electronic exchange interactions between the neighboring porphyrin moieties, which provides a firm basis for further understanding the modification of photophysical properties caused by the phenylene bridge in multiporphyrin assemblies as artificial light-harvesting apparatus.

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