Electronic Properties-Morphology Correlation of a Rod鈥揜od Semiconducting Liquid Crystalline Block Copolymer Containing Poly(3-hexylthiophene)

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• 作者：Mahesh P. Bhatt ; Prakash Sista ; Jing Hao ; Nadia Hundt ; Michael C. Biewer ; Mihaela C. Stefan
• 刊名：Langmuir
• 出版年：2012
• 出版时间：September 4, 2012
• 年：2012
• 卷：28
• 期：35
• 页码：12762-12770
• 全文大小：501K
• 年卷期：v.28,no.35(September 4, 2012)
• ISSN：1520-5827

文摘

The influence of the solvent and annealing temperature on the field-effect mobilities and morphologies of poly(3-hexylthiophene)-b-poly(纬-benzyl-l-glutamate) (P3HT-b-PBLG) rod鈥搑od diblock copolymer has been investigated. Thin film X-ray diffraction studies show peaks originating from both P3HT and PBLG indicating that the crystalline nature of both the blocks is conserved after the formation of the block copolymer. It has been observed that the field-effect mobilities of the diblock copolymer are independent of the annealing temperatures for thin films deposited from both 1,2,4-trichlorobenzene and chloroform solvents. The correlation between the field-effect mobility and morphology indicates that the P3HT block self-assembles at the surface SiO₂ dielectric.