Tampere University of Technology

TUTCRIS Research Portal

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

Research output: Contribution to journalArticleScientificpeer-review

Details

Original languageEnglish
Pages (from-to)5230-5234
JournalAngewandte Chemie (International Edition)
Volume55
Issue number17
DOIs
Publication statusPublished - 2016
Publication typeA1 Journal article-refereed

Abstract

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.

ASJC Scopus subject areas

Keywords

  • Gold, Nanoparticles, Pentacene, Self-assembled monolayers, Singlet fission

Publication forum classification

Field of science, Statistics Finland