Direct visualization of microphase separation in block copoly(3-alkylthiophene)s

作者：Willot Pieter; Teyssandier Joan; Dujardin Wouter; Adisoejoso Jinne; De Feyter Steven; Moerman David; Leclere Philippe; Lazzaroni Roberto; Koeckelberghs Guy^*

来源：RSC Advances, 2015, 5(12): 8721-8726.

DOI：10.1039/c4ra11461b

A poly(3-octylthiophene)-block-poly(3-butylthiophene) block copolymer was synthesized in a one-pot block copolymerization reaction, starting from a functional o-tolyl initiator in order to maximize A-B diblock copolymer formation. First, the composition of this block copolymer is extensively studied using gel permeation chromatography (GPC) and H-1 NMR measurements. A complete block copolymer formation is obtained with almost equal block length; B-A-B block copolymer contamination is shown to be very limited. In a second part, the self-assembly was analysed through differential scanning calorimetry (DSC), atomic force microscopy (AFM) and scanning tunnelling microscopy (STM) measurements, focusing on the microphase separation. A direct visualization of the different microphases can be obtained with STM.

• 出版日期2015