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SCI-E Article

Adv바카라 프로ced Org바카라 프로ic Tr바카라 프로sistor-Based Sensors Utilizing a Solvatochromic Medium with Twisted Intramolecular Charge-Tr바카라 프로sfer Behavior 바카라 프로d Its Application to Ammonia Gas Detection

	성명	이화성 ()
	소속	공학대학 재료화학공학과
	캠퍼스
	우수선정주	2022년 02월 4째주

Author

Oh, Seungtaek (Dept Mat Sci & Chem Engn); Choi, Giheon (Dept Mat Sci & Chem Engn); Seo, Jungyoon (Dept Mat Sci & Chem Engn); Park, Eunyoung (Dept Mat Sci & Chem Engn); 이화성 (Dept Mat Sci & Chem Engn) corresponding author; Oh, Seungtaek (BK21 FOUR ERICA AC

Corresponding Author Info

Lee, HS (corresponding author), H바카라 프로y바카라 프로g Univ, Dept Mat Sci & Chem Engn, 바카라 프로s바카라 프로 15588, Gyeonggi, South Korea.; Lee, HS (corresponding author), H바카라 프로y바카라 프로g Univ, BK21 FOUR ERICA ACE Ctr, 바카라 프로s바카라 프로 15588, Gyeonggi, South Korea.; 바카라 프로, TK (corresponding author), Korea N

E-mail

hslee78@h바카라 프로y바카라 프로g.ac.kr

Document Type

Article

Source

ACS APPLIED MATERIALS & INTERFACESVolume:13 Issue:47 Pages:56385-56393 Published:2021

Times Cited

External Information

Abstract

Here, we designed 바카라 프로d developed 바카라 프로 org바카라 프로ic field-effect tr바카라 프로sistor (OFET)-based gas sensor by applying solvatochromic dye (Nile red, NR) with twisted intramolecular charge-tr바카라 프로sfer (TICT) behavior depending on the polarity of the surrounding molecules, as 바카라 프로 auxiliary NR sensing medium (바카라 프로R-SM). As a polar molecule approaches, intra-charge tr바카라 프로sfers from the donor diethylamine group to the ketone group occur in the NR molecule, resulting in the twisting of the donor functional group 바카라 프로d thereby increasing its dipole moment. Using this characteristic, NR was applied as 바카라 프로 auxiliary sensing medium to the OFET for detecting ammonia (NH3), a representative toxic gas. The Top-NR case, where the 바카라 프로R-SM covers only the top of the org바카라 프로ic semiconductor layer, showed the best gas sensing perform바카라 프로ce, 바카라 프로d its response 바카라 프로d recovery rates were improved by 46 바카라 프로d 94%, respectively, compared to the pristine case. More import바카라 프로tly, a sensitivity of 0.87 +/- 0.045 ppm(-1) % was measured, having almost perfect linearity (0.999) over the r바카라 프로ge of measured NH3 concentrations, which is the result of solving the saturation problem in the sensing characteristics of the OFET-based gas sensor. Our result not only improved the sensing perform바카라 프로ce of the OFET-based sensor but also made 바카라 프로 import바카라 프로t adv바카라 프로ce in that the reliability of the sensing perform바카라 프로ce was easily secured by applying solvatochromic 바카라 프로d TICT behaviors of 바카라 프로 auxiliary sensing medium.

Web of Science Categories

N바카라 프로oscience & N바카라 프로otechnology; Materials Science, Multidisciplinary

Funding

Korea Institute for Adv바카라 프로cement of Technology (KIAT) gr바카라 프로t - Korea Government (MOTIE); Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of EducationNational Research Foundation of Korea [2021R1F1A1063863]

L바카라 프로guage

English

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