Physical and Materials Chemistry Division, National Chemical Laboratory, Dr Homi Bhabha Road, Pune, Maharashtra 411008, India.
Phys Chem Chem Phys. 2011 Aug 28;13(32):14668-74. doi: 10.1039/c1cp21121h. Epub 2011 Jul 11.
Differential wetting of pristine and ozonized carbon nanotubes has been studied using solvents like acetonitrile and dichloromethane in comparison to the well-known wetting behavior of water. Based on their unique structural and physical properties, functionalized CNT substrates have been used due to the fact that independent variation in molecular as well as electronic properties could be controlled by understanding the wetting of these liquids on carbon nanotubes (CNTs), both pristine as well as ozone treated. The sensitivity of the wetting behavior with respect to molecular interactions has been investigated using contact angle measurements while Raman and XPS studies unravel the differential wetting behavior. Charge-transfer between adsorbed molecules and CNTs has been identified to play a crucial role in determining the interfacial energies of these two liquids, especially in the case of acetonitrile. Ozone treatment has been observed to affect the surface properties of pristine CNTs along with a concomitant change in the wetting dynamics.
使用乙腈和二氯甲烷等溶剂对原始和臭氧处理的碳纳米管的润湿性进行了研究，并与众所周知的水的润湿性进行了比较。基于功能化 CNT 基底的独特结构和物理特性，由于通过了解这些液体在碳纳米管（CNT）上的润湿，可以控制分子和电子特性的独立变化，因此使用了原始和臭氧处理的 CNT。使用接触角测量研究了润湿性对分子相互作用的敏感性，而拉曼和 XPS 研究则揭示了不同的润湿性行为。已确定吸附分子和 CNT 之间的电荷转移在确定这两种液体的界面能方面起着至关重要的作用，特别是在乙腈的情况下。观察到臭氧处理会影响原始 CNT 的表面特性，同时润湿动力学也会发生变化。
