Open AccessDiseleno[3,2‐ b :2′,3′‐ d ]selenophene‐Containing High‐Mobility Conjugated Polymer for Organic Field‐Effect Transistors
Author(s) -
Jang SooYoung,
Kim InBok,
Kang Minji,
Fei Zuping,
Jung Eunhwan,
McCarthyWard Thomas,
Shaw Jessica,
Lim DaeHee,
Kim YeonJu,
Mathur Sanjay,
Heeney Martin,
Kim DongYu
Publication year - 2019
Publication title -
advanced science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.388
H-Index - 100
ISSN - 2198-3844
DOI - 10.1002/advs.201900245
Subject(s) - conjugated system , transistor , polymer , materials science , field (mathematics) , electron mobility , nanotechnology , optoelectronics , chemistry , organic chemistry , physics , mathematics , quantum mechanics , pure mathematics , voltage
The synthesis of a diseleno[3,2‐ b :2′,3′‐ d ]selenophene (DSS) composed of three fused selenophenes is reported and it is used as a building block for the preparation of a high hole mobility conjugated polymer (PDSSTV). The polymer demonstrates strong intermolecular interactions even in solution, despite steric repulsion between the large Se atom in DSS and adjacent (C β )–H atoms which leads to a partially twisted confirmation PDSSTV. Nevertheless, 2D grazing incidence X‐ray diffraction (2D‐GIXD) analysis reveals that the polymer tends to align in a highly ordered edge‐on orientation after thermal annealing. The polymer demonstrates promising performance in a field‐effect transistor device with saturated hole mobility up to 2 cm 2 V −1 s −1 obtained under relatively low gate voltages of −30 V. The ultilization of a Se‐containing fused aromatic system, therefore, appears to be a promising avenue for the development of high‐performance conjugated polymers.