High-Yield Excited Triplet States in Pentacene Self-Assembled Monolayers on Gold Nanoparticles through Singlet Exciton Fission

Daiki Kato, Hayato Sakai, Nikolai V. Tkachenko, Taku Hasobe

研究成果: Article査読

26 被引用数 (Scopus)

抄録

One of the major drawbacks of organic-dye-modified self-assembled monolayers on metal nanoparticles when employed for efficient use of light energy is the fact that singlet excited states on dye molecules can be easily deactivated by means of energy transfer to the metal surface. In this study, a series of 6,13-bis(triisopropylsilylethynyl)pentacene-alkanethiolate monolayer protected gold nanoparticles with different particle sizes and alkane chain lengths were successfully synthesized and were employed for the efficient generation of excited triplet states of the pentacene derivatives by singlet fission. Time-resolved transient absorption measurements revealed the formation of excited triplet states in high yield (172±26 %) by suppressing energy transfer to the gold surface. Split the difference: A series of 6,13-bis(triisopropylsilylethynyl)pentacene-alkanethiolate monolayer protected gold nanoparticles with different particle sizes and alkane chain lengths were synthesized. These systems were employed for the efficient generation of excited triplet states on the pentacene molecules by using singlet exciton fission to suppress energy transfer to the Au surface.

本文言語English
ページ(範囲)5230-5234
ページ数5
ジャーナルAngewandte Chemie - International Edition
55
17
DOI
出版ステータスPublished - 2016 4 18

ASJC Scopus subject areas

  • 触媒
  • 化学 (全般)

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