Synthesis of amphiphilic isoindigo co‐polymers for organic field effect transistors: A comparative study

Abstract

In this work, the amphiphilic isoindigo (am‐iInd) based conjugated polymers namely poly(am‐iInd‐DT) and poly(am‐iInd‐TT) and their regular counterpart poly(reg‐iInd‐DT) and poly(reg‐iInd‐TT) were synthesized to compare their opto‐electronic and charge transport properties. They were used to fabricate organic field effect transistors. Charge transport properties in conjugated polymers depend upon intermolecular interaction which is strongly affected by the nature of side chains. The amphiphilic nature of the conjugated polymers has little impact on the charge transport properties. The charge carrier mobility of amphiphilic conjugated polymers was comparable with the regular polymers except poly(reg‐iInd‐DT) which can be correlated by X‐ray diffraction and thin film morphology. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45461.

Recent advances in the application of isoindigo derivatives in materials chemistry

“…According to the available data, the most studied polymeric isoindigos are dithienyl derivatives, in which two thiophene fragments can be linked to each other [74][75][76][77][78][79][80][81][82][83][84][85][86] or be separated by spacers of different structures [87][88][89][90][91]. Structures containing a 2,2'-dithienyl fragment can be divided into three types: 1) not containing substituents in the benzo and thienyl fragments; 2) containing fluorine atoms in the thienyl fragment; and 3) containing fluorine atoms in positions 7,7' and in thienyl fragments (Scheme 24).…”

Solvatochromism and side chain effects on the morphological behavior of bodipy-alt-i-Indigo copolymers

“…38 However, the advantage of i-Indigo over these two is its ease of synthesis, 39 unlike diketopyrrolopyrrole and rylene imides (RIs). [40][41][42] Asymmetric side chains in a polymer impart facile solution processability. 43 It is reported that the intrinsic stretchability of conjugated isoindigo-based polymers can be improved by introducing asymmetricity in their side chains.…”

Diketopyrrolopyrrole tailoring charge transport characteristics of naphthalene diimide based polymers: From unipolar n‐typed to ambipolar polymers

“…These polymers are widely classified as electron ( n ‐type), hole ( p ‐type), and electron–hole (ambipolar) transporting materials, depending upon the nature of their charge transport . Without doubt, hole‐transport polymers have made dramatic progress in performance (charge mobility and air stability) over the past decade . It must be noted, however, that the scenarios for n ‐type materials are also improving steadily because of accomplishment of rational molecular design Nevertheless, ambipolar materials that exhibit relatively high and balanced hole/electron mobilities are highly desired on account of their application in complementary‐like circuits and light‐emitting diodes .…”