2015 Fiscal Year Final Research Report
Semiconducting Thermoplastic Elastomers Based on ABA Block Copolythiophenes
| Project/Area Number |
26620172
|
|---|
| Research Category |
Grant-in-Aid for Challenging Exploratory Research
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Polymer/Textile materials
|
|---|
| Research Institution | Yamagata University |
|---|
Principal Investigator |
|
|---|
| Project Period (FY) |
2014-04-01 – 2016-03-31
|
| Keywords | ブロック共重合体 / 半導体高分子 / エラストマー / ポリチオフェン / シロキサン |
|---|
| Outline of Final Research Achievements |
The thiophene monomer having trisiloxane units could be polymerized by Kumada Catalyst-Transfer Polymerization (KCTP) to afford well-defined poly(1,1,1,3,3,5,5-heptametyl-5-(6’-(thien-3’’-yl)hexyl)trisiloxane-2”,5”-diyl) (P3SiHT) with low dispersity, which was a viscous material with fluidity. In addition, we are successful in synthesizing novel all-conjugated hard-soft-hard ABA triblock copolymer, where A and B were P3HT and P3SiHT, respectively, based on the KCTP method. In the ABA triblock copolymer thin film, the formation of a hierarchical morphology is clearly observed in which P3HT crystalline domains align in the “edge-on” orientation within the excluded area from P3SiHT domains by phase separation, as supported by differential scanning calorimetry (DSC), UV-vis spectroscopy, and grazing incident X-ray diffraction (GIXD). These phase-separated P3HT crystalline domains can be physical linkers in the semiconducting thermoplastic elastomers.
|
| Free Research Field |
高分子合成
|
