화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of the Korean Industrial and Engineering Chemistry, Vol.14, No.6, 759-763, October, 2003
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4-Octyl-4'-(5-carboxypentamethyleneoxy)azobenzene(8A5H)과 인지질 혼합 Langmuir-Blodgett(LB)막의 전기화학적 특성
Electrochemical Properties of Langmuir-Blodgett(LB) Films mixed with 4-Octyl-4'-(5-carboxypentamethyleneoxy)azobenzene (8A5H) and Phospholiphid
박근호, 김범준†
  • 창원대학교 화공시스템공학과, 경남 641-773
Keun Ho Park, and Beon Joon Kim†
  • Dept. of Chemical Engineering, Changwon National University, Gyeongnam 641-773, Korea
E-mail:
초록
8A5H와 인지질 혼합 LB막에 대한 전기화학적 특성을 조사하였다. 8A5H 단분자막과 8A5H-DLPC(몰비, 1:1)혼합 LB막은 친수처리하나 indium tin oxide(ITO) 기판상에 Langmuir-Blodgett법으로 제막하였으며, 이들 LB막의 전기화학적 특성은 three-electrode system(Ag/AgCl reference electrode, platinum wire counter electrode와 LB film-coated ITO working electrode)의 cyclic voltammetry법을 사용하여 여러 농도(0.1, 0.5 및 1.0 mol/L)의 NaClO4 용액에서 측정하였다. 그리고 LB막에 대한 측정범위는 초기전압에서 -1350 mV까지 환원시킨 후 1650 mV까지 산화를 진행하였다가 다시 초기전압까지 실험하였다. 주사속도는 각각 50, 100, 150 및 200 mV/s이다. 그 결과 순환전류전압곡선으로부터 ITO상에 LB법으로 제막된 8A5H 단분자와 8A5H-DLPC 혼합 LB막은 비가역적인 산화반응만이 일어남을 알 수 있었다.
We investigated the electrochemical properties for Langmuir-Blodgett (LB) films mixed with 4-octyl-4'-(5-carboxylpentamethyleneoxy)azobenzene (denoted as 8A5H) and phospholipid (dilauroyl-L-α-phosphayidylcholine, denoted as DLPC). LB films of 8A5H monolayer and 8A5H-DLPC (molar ratio, 1:1) were deposited by using the Langmuir-Blodgett method on the indium tin oxide (ITO) glass. The electrochemical properties were measured by using a cyclic voltammetry with a three-electrode system, an Ag/AgCl reference electrode, a platinum wire counter electrode and LB film-coated ITO working electrode at a various concentration (0.1, 0.5, and 1.0 mol/L) of NaClO4 solution. The measuring range covered the reduction, from the initial potential to -1350 mV, then the oxidation, to 1650 mV, and finally to the initial point. The scan rates were 50, 100, 150 and 200 mV/s, respectively. As a result from of the cyclic voltammogram, LB films of 8A5H monolayer and 8A5H-DLPC were found to be caused by an irreversible oxidation process.
Keywords:Langmuir-Blodgett(LB) film;8A5H;phospholipid;cyclic voltammetry
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