CH3CN과 CH2Cl2/TFA/TFAn-혼합용매계에서의 9-methyl-2,3,6,7-tetramethoxyfluorene의 전기화학적 특성

김덕현; 김수진

Journal of the Korean Industrial and Engineering Chemistry, Vol.10, No.2, 196-200, April, 1999

CH₃CN과 CH₂Cl₂/TFA/TFAn-혼합용매계에서의 9-methyl-2,3,6,7-tetramethoxyfluorene의 전기화학적 특성

The Electrochemical Characteristics of 9-methyl-2,3,6,7-tetramethoxyfluorene in CH₃CN and CH₂Cl₂/TFA/TFAn-solvent Mixture

김덕현, 김수진

초록

9-methyl-2,3,6,7-tetramethoxyfluorene이 CH₃CN과 CH₂Cl₂/TFA/TFAn-혼합용매계에서 갖는 전기화학적 특성을 CV측정을 통해 조사하였다. 이 화합물은 CH₃CN용매계에서 첫 번째 전자이동은 준가역 (quasi-reversible)반응, 두 번째 전자이동은 비가역 반응이었다. 그러나 TFA가 포함된 혼합용매 (CH₂Cl₂/TFA/TFAn)-계에서는 첫 번째, 두 번째 전자이동단계 모두 가역반응을 나타냈다. 진한 청색을 띄는 전해생성물은 혼합용매계에서 안전한 상태로 존재할 수 있어 향후 전기발색소자로서 사용이 가능하다.

The electrochemical properties of 9-methyl-2,3,6,7-tetramethoxyfluorene have been investigated by cyclic voltammetry in acetonitrile, dichloromethane, trifluoroacetic acid (TFA) and trifluoroacetic acid anhydride (TFAn). The first charge transfer for the compound in CH₃CN appeared to be a quasi-reversible one-electron step. The second oxidation step from cation to dication was irreversible. However, the oxdition of the compound in a mixture of solvents containing CH₂Cl₂ TFA and TFAn was reversible for both the first and second charge transfer reactions. Since the electrolytic products display a darkblue color and can be stabilized in the solvent mixture, they may be used as an electrochromic material.

Keywords:Electrochromic Properties;Reversible;9-methyl-2;3;6;7-tetramethoxyfluorene

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