Effect of conformational heterogeneity on excitation energy transfer efficiency in directly meso - Meso linked Zn(II) porphyrin arrays

Tae Kyu Ahn, Zin Seok Yoon, In Wook Hwang, Jong Kuk Lim, Hanju Rhee, Taiha Joo, Eunji Sim, Seong Keun Kim, Naoki Aratani, Atsuhiro Osuka, Dongho Kim

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

We have investigated the overall excitation energy relaxation dynamics in linear porphyrin arrays as well as the energy transport phenomena by attaching an energy acceptor to one end of a linear porphyrin array by using steady state and time-resolved spectroscopic measurements. We have revealed that the solvation dynamics as well as the conformational dynamics contributes significantly to the energy relaxation processes of linear porphyrin arrays. Consequently, long porphyrin arrays no longer serve as good energy transmission elements in donor - acceptor linked systems due to conformational heterogeneities which provide the nonradiative deactivation channels as energy quenchers.

Original languageEnglish
Pages (from-to)11223-11230
Number of pages8
JournalJournal of Physical Chemistry B
Volume109
Issue number22
DOIs
Publication statusPublished - 2005 Jun 9

Fingerprint

Excitation energy
Porphyrins
porphyrins
Energy transfer
energy transfer
excitation
energy
Solvation
Relaxation processes
deactivation
solvation

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

Ahn, Tae Kyu ; Yoon, Zin Seok ; Hwang, In Wook ; Lim, Jong Kuk ; Rhee, Hanju ; Joo, Taiha ; Sim, Eunji ; Kim, Seong Keun ; Aratani, Naoki ; Osuka, Atsuhiro ; Kim, Dongho. / Effect of conformational heterogeneity on excitation energy transfer efficiency in directly meso - Meso linked Zn(II) porphyrin arrays. In: Journal of Physical Chemistry B. 2005 ; Vol. 109, No. 22. pp. 11223-11230.
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Effect of conformational heterogeneity on excitation energy transfer efficiency in directly meso - Meso linked Zn(II) porphyrin arrays. / Ahn, Tae Kyu; Yoon, Zin Seok; Hwang, In Wook; Lim, Jong Kuk; Rhee, Hanju; Joo, Taiha; Sim, Eunji; Kim, Seong Keun; Aratani, Naoki; Osuka, Atsuhiro; Kim, Dongho.

In: Journal of Physical Chemistry B, Vol. 109, No. 22, 09.06.2005, p. 11223-11230.

Research output: Contribution to journalArticle

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T1 - Effect of conformational heterogeneity on excitation energy transfer efficiency in directly meso - Meso linked Zn(II) porphyrin arrays

AU - Ahn, Tae Kyu

AU - Yoon, Zin Seok

AU - Hwang, In Wook

AU - Lim, Jong Kuk

AU - Rhee, Hanju

AU - Joo, Taiha

AU - Sim, Eunji

AU - Kim, Seong Keun

AU - Aratani, Naoki

AU - Osuka, Atsuhiro

AU - Kim, Dongho

PY - 2005/6/9

Y1 - 2005/6/9

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AB - We have investigated the overall excitation energy relaxation dynamics in linear porphyrin arrays as well as the energy transport phenomena by attaching an energy acceptor to one end of a linear porphyrin array by using steady state and time-resolved spectroscopic measurements. We have revealed that the solvation dynamics as well as the conformational dynamics contributes significantly to the energy relaxation processes of linear porphyrin arrays. Consequently, long porphyrin arrays no longer serve as good energy transmission elements in donor - acceptor linked systems due to conformational heterogeneities which provide the nonradiative deactivation channels as energy quenchers.

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