2013 Fiscal Year Final Research Report
Construction and functional analysis of internal molecular asymmetric fields utilizing helical conjugated polymers
| Project/Area Number |
22350049
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Polymer chemistry
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| Research Institution | Kansai University (2013)
Kyoto University (2010-2012) |
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Principal Investigator |
SANDA Fumio 関西大学, 化学生命工学部, 教授 (70262318)
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| Project Period (FY) |
2010-04-01 – 2014-03-31
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| Keywords | 共役高分子 / 光学活性高分子 / 光電気機能 / ポリフェニレンエチニレン |
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| Research Abstract |
The author demonstrated the synthesis and chiroptical properties of various novel D-hydroxyphenylglycine-derived poly(phenyleneethynylene)s, as well as the photo-response and stabilization of the conformation by intramolecular crosslinking at the side chains. The key importance for helix formation for these polymers is amphiphilicity caused by the hydrophobic exterior and hydrophilic interior. p-Stacking between the phenylene moieties on the main chain and intramolecular hydrogen bonding between the amide/carbamate groups in the side chains also plays an important role in helix formation. Poly(phenyleneethynylene)s bearing azobenzene moieties in the main chains formed predominantly one-handed helically folded structures. The polymers underwent a reversible conformational change between folded and unfolded structures upon UV and visible irradiation.
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