| 학회 |
한국공업화학회 |
| 학술대회 |
2015년 봄 (04/29 ~ 05/01, BEXCO (부산)) |
| 권호 |
19권 1호 |
| 발표분야 |
고분자_포스터 |
| 제목 |
Modular Synthesis of Alternating Conjugated Copolymer Based Graft Copolymers for Controlling Their Self-Assembled Nanostructure |
| 초록 |
Control of the self-assembled behavior of conjugated polymer-based copolymers is of great importance in determining their properties in polymer-based opto-electronic devices. Here, we present a simple yet powerful modular synthesis of rod-coil graft copolymers containing alternating conjugated copolymers as the rod backbone. As a model system, we synthesized highly emitting poly(fluorene-alt-phenylene) alternating copolymers via Suzuki-Miyaura polycondensation and then grafted P2VP coil chains with different lengths via click reaction to produce a series of poly(fluorene-alt-phenylene)-graft-poly(2-vinylpyridine) (PFP-g-P2VP) with a wide range of P2VP volume fractions (fP2VP). Their self-assembly behaviors were examined in both bulk films and three-dimensional colloidal particles by transmission electron microscopy and small-angle X-ray scattering. Interestingly, PFP-g-P2VP rod-coil polymers had self-assembly behavior of well-ordered cylinders and lamellaes that resembled those of the coil-coil type copolymers. However, the morphological transitions from P2VP cylinder, to lamellae, to PFP cylinders in terms of fP2VP values were very different from those of the expected value from block copolymers, which were also compared with the self-consistent field theory (SCFT) simulations to gain a deeper understanding on the morphological behavior. Furthermore, by fully exploiting the strong light emission ability of PFP-g-P2VP, we developed multi-color emitting colloidal particles with the full color spectrum from blue, white and orange emissions. Our synthetic approach paves new method to develop new class of rod-coil copolymers based on alternating conjugated copolymers with well-controlled opto-electronic properties. |
| 저자 |
이원호1, 김진성1, 김형준1, 신재만1, 구강희1, 양현승1, Kin Liao2, 이원보3, 김범준1
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| 소속 |
1KAIST, 2Khalifa Univ., 3서강대 |
| 키워드 |
Conjugated Copolymer; Graft Copolymers; Self-Assembled Nanostructure
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| E-Mail |
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