Controlling Poly(3-hexylthiophene) Crystal Dimension: Nanowhiskers and Nanoribbons

被引：218

作者：

Liu, Jianhua ^{[1
,2
]}

Arif, Mohammad ^{[1
,3
]}

Zou, Jianhua ^{[1
,2
]}

Khondaker, Saiful I. ^{[1
,3
]}

Zhai, Lei ^{[1
,2
]}

机构：

[1] NanoSci Technol Ctr, Orlando, FL 32826 USA

[2] Dept Chem, Orlando, FL 32826 USA

[3] Univ Cent Florida, Dept Phys, Orlando, FL 32826 USA

来源：

MACROMOLECULES | 2009年 / 42卷 / 24期

基金：

美国国家科学基金会;

关键词：

FIELD-EFFECT MOBILITY; REGIOREGULAR POLY(3-HEXYLTHIOPHENE); CHARGE-TRANSPORT; MOLECULAR-WEIGHT; THIN-FILMS; POLYTHIOPHENE; MICROSCOPY; THIOPHENE); DEPENDENCE;

D O I：

10.1021/ma901955c

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A study was conducted to investigate crystallization of regioregular poly(3-hexylthiophene) (P3HT) by changing the polymer molecular weight (M n), crystallization temperature, and polymer concentration. It was observed that polymer chains changed from extending to folding in nanowhiskers when the Mn was above a critical value. The fold length was controlled by changing the crystallization temperature. These observations provided the first evidence of P3HT chain folding when it crystallized from solutions. It was also observed that one dimensional (ID) nanowhiskers composed of extended P3HT chains were grown into highly ordered two-dimensional (2D) nanoribbons from more concentrated P3HT solutions, generating a new class of large P3HT crystals. The increased concentration of folded-chain and extended-chain P3HT samples resulted in the formation of gels.

引用

页码：9390 / 9393

页数：4

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