Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 1360-1368 |
| Number of pages | 9 |
| Journal | Journal of Polymer Science, Part A: Polymer Chemistry |
| Volume | 53 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 2015 Jun 1 |
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Keywords
- gels
- hydrosilylation
- luminescence
- organic-inorganic hybrid gels
- photophysical property
- pi interaction
- scanning microscopic light scattering
- σ-π conjugation
ASJC Scopus subject areas
- Polymers and Plastics
- Organic Chemistry
- Materials Chemistry
Cite this
Synthesis and optical properties of σ-π Conjugated organic-inorganic hybrid gels. / Naga, Naofumi; Nagino, Hitomi; Iwashita, Midori; Miyanaga, Tomoharu; Furukawa, Hidemitsu.
In: Journal of Polymer Science, Part A: Polymer Chemistry, Vol. 53, No. 11, 01.06.2015, p. 1360-1368.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Synthesis and optical properties of σ-π Conjugated organic-inorganic hybrid gels
AU - Naga, Naofumi
AU - Nagino, Hitomi
AU - Iwashita, Midori
AU - Miyanaga, Tomoharu
AU - Furukawa, Hidemitsu
PY - 2015/6/1
Y1 - 2015/6/1
N2 - 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.
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.
KW - gels
KW - hydrosilylation
KW - luminescence
KW - organic-inorganic hybrid gels
KW - photophysical property
KW - pi interaction
KW - scanning microscopic light scattering
KW - σ-π conjugation
UR - http://www.scopus.com/inward/record.url?scp=85028213449&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85028213449&partnerID=8YFLogxK
U2 - 10.1002/pola.27571
DO - 10.1002/pola.27571
M3 - Article
AN - SCOPUS:85028213449
VL - 53
SP - 1360
EP - 1368
JO - Journal of Polymer Science, Part A: Polymer Chemistry
JF - Journal of Polymer Science, Part A: Polymer Chemistry
SN - 0887-624X
IS - 11
ER -