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Gas-Induced Ion-Free Stable Radical Anion Formation of Organic Semiconducting Solids as Highly Gas-Selective Probes

Title
Gas-Induced Ion-Free Stable Radical Anion Formation of Organic Semiconducting Solids as Highly Gas-Selective Probes
Authors
Lee, Seung-HeonOh, Byeong M.Hong, Chan YooJung, Su-KyoPark, Sung-HaJeon, Gyeong G.Kwon, Young-WanJang, SeokhoonLee, YounguKim, DongwookKim, Jong H.Kwon, O-Pil
DGIST Authors
Lee, Youngu
Issue Date
2019-10
Citation
ACS Applied Materials and Interfaces, 11(39), 35904-35913
Type
Article
Article Type
Article
Author Keywords
stable radical anion formationorganic field-effect transistorgas sensorsnaphthalene diimidepi-electron-deficient aromatic cores
Keywords
ELECTRON-TRANSFERNAPHTHALENE-DIIMIDEAMMONIA SENSORSCHARGE-TRANSFERTRANSISTORNH3PERYLENE
ISSN
1944-8244
Abstract
The formation of stabilized radical anions on organic materials in the solid state is an important issue in radical-based fundamental research and various applications. Herein, for the first time, we report on gas-induced ion-free stable radical anion formation (SRAF) of organic semiconducting solids with high gas selectivities through the use of organic field-effect transistor (OFET) gas sensors and electron spin resonance spectroscopy. In contrast to the previously reported SRAF, which requires either anionic analytes in solution and/or cationic substituents on π-electron-deficient aromatic cores, NDI-EWGs consist of an n-type semiconducting naphthalene diimide (NDI) and various electron-withdrawing groups (EWGs) that exhibit non-ion-involved, gas-selective SRAF in the solid state. In the presence of hard Lewis base gases, NDI-EWG-based OFETs exhibit enhanced conductivity (Current-ON mode) through the formation of an SRAF NDI/gas complex, while in the presence of borderline and soft Lewis base gases, NDI-EWG-based OFETs show decreased conductivity (Current-OFF mode) by the formation of a resistive NDI/gas complex. Organic semiconducting solids with EWGs exhibiting highly gas-selective solid-SRAF constitute a very promising platform for radical-based chemistry and can be used in various applications, such as highly gas-selective probes. © 2019 American Chemical Society.
URI
http://hdl.handle.net/20.500.11750/10846
DOI
10.1021/acsami.9b12222
Publisher
American Chemical Society
Related Researcher
  • Author Lee, Youngu Organic & Printed Electronics Laboratory(OPEL)
  • Research Interests OTF Solar cell; OLED; Printed Electronics; 유기박막형 태양전지
Files:
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Collection:
Department of Energy Science and EngineeringOrganic & Printed Electronics Laboratory(OPEL)1. Journal Articles


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