Adsorption of TTF, TCNQ and TTF-TCNQ on Au(111): An in situ ECSTM study

• 来源期刊: 中国科学B辑（英文版）
• 年，卷（期）: 2009,（5）
• 页码范围: 559-565
• 页数: 7页
• 语种: 英文
• DOI: 10.1007/s11426-009-0083-2

摘要

The adsorption and adlayer structures of tetrathiofulvalene OFF), tetracyanoquinodimethane (TCNQ) and TTF-TCNQ on Au(111) have been systematically investigated by in situ electrochemical scanning were found to form well-ordered adlayers in the double-layer potential region of Au(111). For TTF and TCNQ adlayers, (6×3) and (4×7) structures have been observed, respectively. A structural transition was observed on TCNQ adlayer at potential negative of 0.08 V vs. the reversible hydrogen electrode (RHE), TTF-TCNQ, self-organized into ordered domains with a lamellar structure different from those of the pure TTF and TCNQ adlayers on Au(111). Its packing arrangement was comparable to surface struc-tures of either single crystal or thin film of TTF-TCNQ.