1. Amphiphilic Poly(3-hexylthiophene)-Based SemiconductingCopolymers for Printing of Polyelectrolyte-Gated Organic Field-EffectTransistors.
- Author
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Laiho, Ari, Nguyen, Ha Tran, Sinno, Hiam, Engquist, Isak, Berggren, Magnus, Dubois, Philippe, Coulembier, Olivier, and Crispin, Xavier
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AMPHIPHILES , *POLYTHIOPHENES , *SEMICONDUCTORS , *POLYELECTROLYTES , *ORGANIC field-effect transistors , *BLOCK copolymers , *GEL permeation chromatography - Abstract
Polyelectrolytes are promising electronicallyinsulating layers for low-voltage organic field effect transistors.However, the polyelectrolyte–semiconductor interface is difficultto manufacture due to challenges in wettability. We introduce an amphiphilicsemiconducting copolymer which, when spread as a thin film, can changeits surface from hydrophobic to hydrophilic upon exposure to water.This peculiar wettability is exploited in the fabrication of polyelectrolyte-gatedfield-effect transistors operating below 0.5 V. The prepared amphiphilicsemiconducting copolymer is based on a hydrophobic regioregular poly(3-hexylthiophene)(P3HT) covalently linked to a hydrophilic poly(sulfonated)-based randomblock. Such a copolymer is obtained in a three-step strategy combiningGrignard metathesis (GRIM), atom transfer radical polymerization (ATRP)processes, and a postmodification method. The structure of the diblockcopolymer was characterized using FT-IR, 1H NMR spectroscopy,and gel permeation chromatography (GPC). [ABSTRACT FROM AUTHOR]
- Published
- 2013
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