Efficient Light-Harvesting Antennae Resulting from the Dense Organization of Dyes into DNA Junctions through d-Threoninol

Hiromu Kashida, Hidenori Azuma, Ryoko Maruyama, Yasuyuki Araki, Takehiko Wada, Hiroyuki Asanuma

研究成果: Article査読

6 被引用数 (Scopus)

抄録

Herein we report the construction of efficient light-harvesting antennae by hybridization of DNA oligonucleotides containing high densities of fluorophores into DNA junctions through d-threoninol. Six pyrene donors could be incorporated into each arm without self-quenching. A perylene acceptor was located at the center of the junction. Antenna effects of a duplex and three- to eight-way junctions were systematically compared. Six- and eight-way junctions had the highest antenna effects, and their effective absorption coefficients were 8.5 times higher than that of perylene. Interestingly, even-numbered junctions had higher efficiencies than odd-numbered junctions. Nondenaturing gel analyses and fluorescence lifetime measurements demonstrated that the strong odd–even effects were derived from differences in the stability of junctions. The results presented will guide the design of efficient artificial photosynthetic systems.

本文言語English
ページ(範囲)11360-11363
ページ数4
ジャーナルAngewandte Chemie - International Edition
59
28
DOI
出版ステータスPublished - 2020 7 6

ASJC Scopus subject areas

  • 触媒
  • 化学 (全般)

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