Light-induced electron transfer of a supramolecular bis(zinc porphyrin)-fullerene triad constructed via a diacetylamidopyridine/uracil hydrogen-bonding motif

Suresh Gadde, D. M. Shafiqul Islam, Channa A. Wijesinghe, Navaneetha K. Subbaiyan, Melvin E. Zandler, Yasuyuki Araki, Osamu Ito, Francis D'Souza

研究成果: Article査読

37 被引用数 (Scopus)

抄録

Using a diacetylamidopyridine/uracil complementary hydrogen-bonding motif, a novel bis(zinc porphyrin)-fullerene supramolecular triad is constructed and characterized. The geometry of the triad deduced from DFT-MO studies revealed the presence of the "three-point" hydrogen bonding and that one of the porphyrin units of the dimer is closer to the fullerene entity. Picosecond time-resolved emission and anosecond transient absorption techniques were employed, respectively, to evaluate the kinetics of electron transfer and to characterize the electron-transfer products. The positioning of the porphyrin entity with respect to the fullerene entity (near or far) seems to influence the kinetics of charge-separation and charge-recombination events, thus delineating the structural importance of the studied supramolecular triad in governing the electron-transfer rates.

本文言語English
ページ(範囲)12500-12503
ページ数4
ジャーナルJournal of Physical Chemistry C
111
34
DOI
出版ステータスPublished - 2007 8 30

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • エネルギー(全般)
  • 物理化学および理論化学
  • 表面、皮膜および薄膜

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