摘要
2,3,5,6-Tetrachloride-quinone was anchored to a gold surfare through the self-assem-bled monolayers of dithiol [DT HS-(CH2).-SH n=2,4,6,8,10]. The surface coverage of the anchoredTQ was esteminated to be 4.0 ×10-11 mol’cm-2. The electron transfer rate constant Ket associatedwith the redox process of anchored film decreased from 6.75 s-1 at n=2 to 0.169 s-1 at n=10 withincreasing the chain length of the DT SAMs througth the redox potential of TQ. The turnningbarrier conefficient.(β) of the electron transfer was estimated to be 0.82A-1 from the observed linearrelationship between the Ket and the monolayer chain length.
2,3,5,6-Tetrachloride-quinone was anchored to a gold surfare through the self-assem-bled monolayers of dithiol [DT HS-(CH2).-SH n=2,4,6,8,10]. The surface coverage of the anchoredTQ was esteminated to be 4.0 ×10-11 mol'cm-2. The electron transfer rate constant Ket associatedwith the redox process of anchored film decreased from 6.75 s-1 at n=2 to 0.169 s-1 at n=10 withincreasing the chain length of the DT SAMs througth the redox potential of TQ. The turnningbarrier conefficient.(β) of the electron transfer was estimated to be 0.82A-1 from the observed linearrelationship between the Ket and the monolayer chain length.
出处
《物理化学学报》
SCIE
CAS
CSCD
北大核心
1998年第7期640-644,共5页
Acta Physico-Chimica Sinica
基金
国家自然科学基金
江苏省自然科学基金
关键词
四氯苯醌
硫醇
自组装膜
电子传递
SAMS
2,3,5,6-Tetrachloride-Quinone, Dithiol, Self-assembled monolayers, Electron transfer rate constant (K_(et))
