固态核磁共振探究在聚(3-己基噻吩)中引入聚(苯乙烯)增强孔迁移率的因素

IF 2.5 4区 化学 Q3 POLYMER SCIENCE
Riku Takahashi, Eri Tomita, Shinpei Mukadeyama, Shinji Kanehashi, Kenji Ogino
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引用次数: 0

摘要

本研究采用固态交叉偏振魔角旋光(CPMAS)13C NMR 技术来研究通过引入电惰性聚(苯乙烯)(PSt)而在聚(3-己基噻吩)(P3HT)中观察到的空穴迁移率增强的形态因素。利用 T1C(实验室框架中的 13C 自旋晶格弛豫时间)评估了 P3HT 域中结晶相和无定形相的链迁移率。通过 T1ρH(旋转框架中的 1H 自旋晶格弛豫时间)滤波 CPMAS,利用光谱编辑法估算了 P3HT 成分的结晶度。此外,还估算了 P3HT 结晶畴和 P3HT 非晶畴的可混溶性。这些结果表明在嵌段共聚物(P3HT-block-PSt)中形成了刚性无定形(短程有序无定形)。在 P3HT 与 PSt 的共混样品(P3HT-blend-PSt)中,结晶体比例的增加和每个结晶体的近似存在也表明了这一点。流动性的增强归因于 P3HT 块状-PSt 中刚性无定形域的比例增大,以及 P3HT 混合物-PSt 中晶体含量的增加。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Solid‐State NMR Exploration of Factors for Enhancement of Hole Mobility by Introduction of Poly(styrene) Into Poly(3‐hexylthiophene)
Solid‐state cross‐polarization magic angle spinning (CPMAS) 13C NMR is employed to examine the morphological factors that contribute to the enhanced hole mobility observed in poly(3‐hexylthiophene) (P3HT) by the introduction of electrically inert poly(styrene) (PSt). Chain mobilities of crystalline and amorphous phases in the P3HT domain are evaluated utilizing T1C (13C spin‐lattice relaxation time in the laboratory frame). The crystallinity of P3HT component is estimated based on the spectral editing method through TH (1H spin‐lattice relaxation time in the rotating frame) filtered CPMAS. Moreover, the miscibility of P3HT crystalline and P3HT amorphous domains is estimated. These results suggest the formation of the rigid amorphous (short‐range ordered amorphous) in a block copolymer (P3HT‐block‐PSt). An increase in the proportion of the crystallite and proximate presence of each crystallite in a blend sample of P3HT with PSt (P3HT‐blend‐PSt) are also indicated. Enhanced mobility is attributed to the larger portion of rigid amorphous domain for P3HT‐block‐PSt, and to higher crystalline content for P3HT‐blend‐PSt.
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来源期刊
Macromolecular Chemistry and Physics
Macromolecular Chemistry and Physics 化学-高分子科学
CiteScore
4.30
自引率
4.00%
发文量
278
审稿时长
1.4 months
期刊介绍: Macromolecular Chemistry and Physics publishes in all areas of polymer science - from chemistry, physical chemistry, and physics of polymers to polymers in materials science. Beside an attractive mixture of high-quality Full Papers, Trends, and Highlights, the journal offers a unique article type dedicated to young scientists – Talent.
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