高覆盖率氟代癸基三氯硅烷自组装单分子膜的制备

发布时间：2018-10-24 06:12

【摘要】：通过液相沉积在云母表面制备1H,1H,2H,2H-全氟癸基三氯硅烷(FDTS)自组装单分子膜(SAMs)。室温下,将1.0 mmol?L~(-1)的FDTS溶液静置水解15 min,再把云母浸入自组装30 min,原子力显微镜(AFM)表征发现,液相沉积过程中FDTS的团聚现象得到有效解决。该方法制备出了高覆盖率(85%±2%)和低均方根粗糙度(0.58 nm)的FDTS SAMs,且单分子膜的生长过程符合Langmuir一级动力学吸附模型。在液相沉积过程中,若水解和组装同时进行,过长的水解时间(大于30 min)或组装时间(大于30 min)均会导致FDTS的团聚,进而极大降低SAMs的质量。
[Abstract]:Preparation of 1H ~ 1H ~ (2) H ~ (2) H _ (2) -Perfluorodecyl trichlorosilane (FDTS) Self-assembled monolayer (SAMs). At room temperature, the FDTS solution of 1.0 mmol?L~ (-1) was statically hydrolyzed for 15 min, and then immersed in self-assembled 30 min, atomic force microscope (AFM). It was found that the agglomeration of FDTS was effectively solved during liquid deposition. FDTS SAMs, with high coverage (85% 卤2%) and low root-mean-square roughness (0.58 nm) was prepared by this method. The growth process of monolayers was in accordance with the first-order kinetic adsorption model of Langmuir. In the process of liquid phase deposition, if hydrolysis and assembly are carried out simultaneously, long hydrolysis time (more than 30 min) or assembly time (more than 30 min) will lead to the agglomeration of FDTS, thus greatly reducing the quality of SAMs.
【作者单位】：南京工业大学化工学院材料化学工程国家重点实验室;
【基金】：国家重点基础研究发展规划(973)(2013CB733503) 国家自然科学基金(21490581) 江苏高校优势学科建设工程(PAPD)资助项目~~
【分类号】：O627.41;O647

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