Synthesis and optical properties of σ-π Conjugated organic-inorganic hybrid gels

Naofumi Naga, Hitomi Nagino, Midori Iwashita, Tomoharu Miyanaga, Hidemitsu Furukawa

研究成果: Article

1 引用 (Scopus)

抄録

Organic-inorganic hybrid gels containing Si-vinylene units have been synthesized by a hydrosilylation reaction of tri- or tetra-ethynyl aryl compounds, 1,3,5-triethynylbenzene (TEB), 3,3,5,5-tetraethynylbiphenyl (TEBP), or tetrakis(4-ethynylphenyl)methane (TEPM), and bisdimethylsilyl compounds, 1,1,3,3-tetramethyldisiloxane (TMDS) or 1,4-bisdimetylsilylbenzene (BDMSB), in toluene. Network structure of the resulting gels was quantitatively characterized by a scanning microscopic light scattering. The reactions yielded the gels having homogeneous network structure of 1.5-2.9 nm mesh size under the monomer concentrations that were relatively higher than the critical gelation concentration. The gels obtained from TEB showed broad absorption in the range from 340 to 370 nm, and emission in the range from 440 to 490 nm. The TEB-BDMSB gels showed remarkable red shift of the emission in comparison with that of the corresponding reaction solutions derived from the network formed by σ-π conjugation. The TEPM-TMDS, BDMSB gels exited by 280 nm showed not only the emission peak at around 360 nm derived from TEPM, but the broad peak at around 420 nm, which should be derived from interaction between phenyl groups of TEPM in the gels.

元の言語English
ページ(範囲)1360-1368
ページ数9
ジャーナルJournal of Polymer Science, Part A: Polymer Chemistry
53
発行部数11
DOI
出版物ステータスPublished - 2015 6 1

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Gels
Optical properties
Methane
Hydrosilylation
Toluene
Gelation
Light scattering
Monomers
Scanning

ASJC Scopus subject areas

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

これを引用

Synthesis and optical properties of σ-π Conjugated organic-inorganic hybrid gels. / Naga, Naofumi; Nagino, Hitomi; Iwashita, Midori; Miyanaga, Tomoharu; Furukawa, Hidemitsu.

:: Journal of Polymer Science, Part A: Polymer Chemistry, 巻 53, 番号 11, 01.06.2015, p. 1360-1368.

研究成果: Article

Naga, Naofumi ; Nagino, Hitomi ; Iwashita, Midori ; Miyanaga, Tomoharu ; Furukawa, Hidemitsu. / Synthesis and optical properties of σ-π Conjugated organic-inorganic hybrid gels. :: Journal of Polymer Science, Part A: Polymer Chemistry. 2015 ; 巻 53, 番号 11. pp. 1360-1368.
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AB - Organic-inorganic hybrid gels containing Si-vinylene units have been synthesized by a hydrosilylation reaction of tri- or tetra-ethynyl aryl compounds, 1,3,5-triethynylbenzene (TEB), 3,3,5,5-tetraethynylbiphenyl (TEBP), or tetrakis(4-ethynylphenyl)methane (TEPM), and bisdimethylsilyl compounds, 1,1,3,3-tetramethyldisiloxane (TMDS) or 1,4-bisdimetylsilylbenzene (BDMSB), in toluene. Network structure of the resulting gels was quantitatively characterized by a scanning microscopic light scattering. The reactions yielded the gels having homogeneous network structure of 1.5-2.9 nm mesh size under the monomer concentrations that were relatively higher than the critical gelation concentration. The gels obtained from TEB showed broad absorption in the range from 340 to 370 nm, and emission in the range from 440 to 490 nm. The TEB-BDMSB gels showed remarkable red shift of the emission in comparison with that of the corresponding reaction solutions derived from the network formed by σ-π conjugation. The TEPM-TMDS, BDMSB gels exited by 280 nm showed not only the emission peak at around 360 nm derived from TEPM, but the broad peak at around 420 nm, which should be derived from interaction between phenyl groups of TEPM in the gels.

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