Excitation energy migration in a dodecameric porphyrin wheel

In Wook Hwang, Dah Mee Ko, Tae Kyu Ahn, Zin Seok Yoon, Dongho Kim, Xiaobin Peng, Naoki Aratani, Atsuhiro Osuka

Research output: Contribution to journalArticlepeer-review

36 Citations (Scopus)


Intramolecular excitation energy hopping (EEH) time within a dodecameric porphyrin wheel C6ZA, in which six meso-meso linked zinc(II) diporphyrin (Z2) subunits are bridged by 1,3-phenylene spacers, is deduced by a Förster energy hopping model based on S1-S1 exciton-exciton annihilation and anisotropy depolarization. Under the assumption that the energy hopping sites are six Z2 subunits, two different observables (e.g., exciton-exciton annihilation and anisotropy depolarization times) consistently give the EEH time of 4.0 ± 0.4 ps via 1,3-phenylene spacer of C6ZA, which is faster than 9.4 ps of linear 2Z2 (1,3-phenylene-linked zinc(II) tetraporphyrin). As a consequence, C6ZA serves as a well-defined two-dimensional model for a light-harvesting complex.

Original languageEnglish
Pages (from-to)8643-8651
Number of pages9
JournalJournal of Physical Chemistry B
Issue number18
Publication statusPublished - 2005 May 12

All Science Journal Classification (ASJC) codes

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


Dive into the research topics of 'Excitation energy migration in a dodecameric porphyrin wheel'. Together they form a unique fingerprint.

Cite this