Fluorescence Resonance Energy Transfer of Fluorescent Molecules in Joint-Linker Type Organic-Inorganic Hybrid Gels

Naofumi Naga, Saki Hashimoto, Tomoharu Miyanaga, Hidemitsu Furukawa

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Fluorescence resonance energy transfer (FRET) sensitized emission of perylene by pyrene in a joint-linker type gel is observed for the first time. The joint-linker type organic-inorganic hybrid gels containing pyrene and perylene synthesized from multi-functional cyclic siloxane, 1,3,5,7-tetramethylcyclotetrasiloxane (TMCTS), or cubic silsesquioxane, 1,3,5,7,9,11,13,15-octakis(dimethylsilyloxy)pentacyclo-[9,5,1,1,1,1]octasilsesquioxane (POSS), as joint molecules, and α,ω-nonconjugated dienes, 1,5-hexadiene (HD), or 1,9-decadiene (DD), as linker molecules, are involved in a photo hydrosilylation reaction with a bis(acetylacetonato)platinum catalyst in a toluene solution of pyrene and perylene. FRET from pyrene (donor) to perylene (acceptor) in the gels is studied quantitatively. The FRET efficiencies (E) of gels containing 300 or 30 x 10–6 m of pyrene and perylene are about 0.6–0.8 or 0.5, respectively, independent of the monomer concentration. Sensitized acceptor emission is observed in the gels, especially in the gels containing 300 x 10–6 m of pyrene and perylene molecules. The ratio of the increase of the sensitized acceptor emission to the loss of donor fluorescence, the G factor, is determined to evaluate the efficiency of the sensitized emission of the acceptor in the gels. The G factors of the gels containing 300 or 30 x 10–6 m of pyrene and perylene molecules are 0.4–0.75 or 0.07-0.1, repectively, and the gels with TMCTS or DD have a slightly higher G factor than gels with POSS or HD. (Figure presented.).

Original languageEnglish
Pages (from-to)2671-2678
Number of pages8
JournalMacromolecular Chemistry and Physics
Volume217
Issue number24
DOIs
Publication statusPublished - 2016 Dec 1

Fingerprint

resonance fluorescence
Perylene
Gels
Pyrene
energy transfer
pyrenes
gels
Molecules
molecules
hexadiene
Fluorescence Resonance Energy Transfer
Siloxanes
Hydrosilylation
siloxanes
Toluene
dienes
pyrene
Platinum
toluene
platinum

Keywords

  • fluorescence resonance energy transfer (FRET)
  • fluorescent molecules
  • FRET sensitized emission
  • gels

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

Cite this

Fluorescence Resonance Energy Transfer of Fluorescent Molecules in Joint-Linker Type Organic-Inorganic Hybrid Gels. / Naga, Naofumi; Hashimoto, Saki; Miyanaga, Tomoharu; Furukawa, Hidemitsu.

In: Macromolecular Chemistry and Physics, Vol. 217, No. 24, 01.12.2016, p. 2671-2678.

Research output: Contribution to journalArticle

Naga, Naofumi ; Hashimoto, Saki ; Miyanaga, Tomoharu ; Furukawa, Hidemitsu. / Fluorescence Resonance Energy Transfer of Fluorescent Molecules in Joint-Linker Type Organic-Inorganic Hybrid Gels. In: Macromolecular Chemistry and Physics. 2016 ; Vol. 217, No. 24. pp. 2671-2678.
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AB - Fluorescence resonance energy transfer (FRET) sensitized emission of perylene by pyrene in a joint-linker type gel is observed for the first time. The joint-linker type organic-inorganic hybrid gels containing pyrene and perylene synthesized from multi-functional cyclic siloxane, 1,3,5,7-tetramethylcyclotetrasiloxane (TMCTS), or cubic silsesquioxane, 1,3,5,7,9,11,13,15-octakis(dimethylsilyloxy)pentacyclo-[9,5,1,1,1,1]octasilsesquioxane (POSS), as joint molecules, and α,ω-nonconjugated dienes, 1,5-hexadiene (HD), or 1,9-decadiene (DD), as linker molecules, are involved in a photo hydrosilylation reaction with a bis(acetylacetonato)platinum catalyst in a toluene solution of pyrene and perylene. FRET from pyrene (donor) to perylene (acceptor) in the gels is studied quantitatively. The FRET efficiencies (E) of gels containing 300 or 30 x 10–6 m of pyrene and perylene are about 0.6–0.8 or 0.5, respectively, independent of the monomer concentration. Sensitized acceptor emission is observed in the gels, especially in the gels containing 300 x 10–6 m of pyrene and perylene molecules. The ratio of the increase of the sensitized acceptor emission to the loss of donor fluorescence, the G factor, is determined to evaluate the efficiency of the sensitized emission of the acceptor in the gels. The G factors of the gels containing 300 or 30 x 10–6 m of pyrene and perylene molecules are 0.4–0.75 or 0.07-0.1, repectively, and the gels with TMCTS or DD have a slightly higher G factor than gels with POSS or HD. (Figure presented.).

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