Abstract Two novel long alkyl-chain indazole derivatives namely, 1-dodecyl-1H-indazole (DI), N,1-didodecyl-1H-indazol-5-amine (DDIA), were synthesized and fabricated on copper surface. Comprehensive characterizations were used to evaluate the appearance and structural properties of studied SAMs, implying a more stable and hydrophobic film of DDIA than IA. The anticorrosion ability of the SAMs was investigated by electrochemical methods allied to an immersion test, which suggest that DDIA-SAMs harbor more superior inhibition performance than IA ones. Besides, Fukui functions indicates that N2 and N10 in DDIA molecule are likely to form coordinate bonds with Cu atoms, whereas N2 in DI is the active site during absorption process.

中文翻译：

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单双烷基链吲唑衍生物自组装单层铜缓蚀的设计与制备

摘要 在铜表面合成并制备了两种新型长烷基链吲唑衍生物1-十二烷基-1H-吲唑(DI)、N,1-二十二烷基-1H-吲唑-5-胺(DDIA)。综合表征用于评估研究的 SAM 的外观和结构特性，这意味着 DDIA 比 IA 更稳定和疏水。通过电化学方法结合浸泡试验研究了 SAMs 的防腐能力，这表明 DDIA-SAMs 比 IA 具有更优越的抑制性能。此外，Fukui 函数表明 DDIA 分子中的 N2 和 N10 很可能与 Cu 原子形成配位键，而 DI 中的 N2 是吸收过程中的活性位点。