Premium
Efficient Benzodithiophene/Benzothiadiazole‐Based n‐Channel Charge Transporters
Author(s) -
SandovalTorrientes Rafael,
Calbo Joaquín,
Matsuda Wakana,
Choi Wookjin,
Santos José,
Seki Shu,
Ortí Enrique,
Martín Nazario
Publication year - 2017
Publication title -
chempluschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.801
H-Index - 61
ISSN - 2192-6506
DOI - 10.1002/cplu.201700047
Subject(s) - chemistry , electron transport chain , charge (physics) , electrochemistry , electron , electron acceptor , molecule , acceptor , conductivity , electron transfer , electron mobility , chemical physics , crystallography , molecular physics , photochemistry , optoelectronics , condensed matter physics , electrode , materials science , organic chemistry , physics , biochemistry , quantum mechanics
A series of donor–acceptor (D‐A) small molecules based on electron‐deficient benzothiadiazole (BTD) and electron‐rich benzodithiophene (BDT) featuring an A‐D‐A structure is presented. Exhaustive spectroscopic, electrochemical, and computational studies evidence their electroactive nature and their ability to form well‐ordered thin films with broad visible absorptions and low band gaps (ca. 2 eV). Time‐resolved microwave conductivity (TRMC) studies unveil unexpected n‐type charge transport displaying high electron mobilities around 0.1 cm 2 V −1 s −1 . Efficient electron transport properties are consistent with the low electron reorganization energies (0.11–0.17 eV) theoretically predicted.