TY - JOUR
T1 - Efficient n-Type Small-Molecule Mixed Ion-Electron Conductors and Application in Hydrogen Peroxide Sensors
AU - Liao, Hailiang
AU - Chen, Junxin
AU - Lan, Liuyuan
AU - Yu, Yaping
AU - Zhu, Genming
AU - Duan, Jiayao
AU - Zhu, Xiuyuan
AU - Dai, Haojie
AU - Xiao, Mingfei
AU - Li, Zhengke
AU - Yue, Wan
AU - McCulloch, Iain
N1 - Generated from Scopus record by KAUST IRTS on 2023-09-21
PY - 2022/4/13
Y1 - 2022/4/13
N2 - Small-molecule semiconductors used as the channel of organic electrochemical transistors (OECTs) have been rarely reported despite their inherent advantages of well-defined molecular weight, convenient scale-up synthesis, and good performance reproducibility. Herein, three small molecules based on perylene diimides are readily prepared for n-type OECTs. The final molecules show preferred energy levels, tunable backbone conformation, and high film crystallinity, rendering them good n-type dopability, favorable volumetric capacities, and substantial electron mobilities. Consequently, the OECTs afford a record-low threshold voltage of 0.05 V and a normalized peak transconductance of 4.52 × 10-2S cm-1, as well as impressive long-term cycling stability. Significantly, the OECTs utilized for hydrogen peroxide sensing are further demonstrated with a detection limit of 0.75 μM. This work opens the possibility of developing nonfullerene small molecules as superior n-type OECT materials and provides important insights for designing high-performance small-molecule mixed ion-electron conductors for OECTs and (bio)sensors.
AB - Small-molecule semiconductors used as the channel of organic electrochemical transistors (OECTs) have been rarely reported despite their inherent advantages of well-defined molecular weight, convenient scale-up synthesis, and good performance reproducibility. Herein, three small molecules based on perylene diimides are readily prepared for n-type OECTs. The final molecules show preferred energy levels, tunable backbone conformation, and high film crystallinity, rendering them good n-type dopability, favorable volumetric capacities, and substantial electron mobilities. Consequently, the OECTs afford a record-low threshold voltage of 0.05 V and a normalized peak transconductance of 4.52 × 10-2S cm-1, as well as impressive long-term cycling stability. Significantly, the OECTs utilized for hydrogen peroxide sensing are further demonstrated with a detection limit of 0.75 μM. This work opens the possibility of developing nonfullerene small molecules as superior n-type OECT materials and provides important insights for designing high-performance small-molecule mixed ion-electron conductors for OECTs and (bio)sensors.
UR - https://pubs.acs.org/doi/10.1021/acsami.1c24267
UR - http://www.scopus.com/inward/record.url?scp=85127882109&partnerID=8YFLogxK
U2 - 10.1021/acsami.1c24267
DO - 10.1021/acsami.1c24267
M3 - Article
C2 - 35357117
SN - 1944-8252
VL - 14
SP - 16477
EP - 16486
JO - ACS Applied Materials and Interfaces
JF - ACS Applied Materials and Interfaces
IS - 14
ER -