Solvent Induced Adhesion Interactions between Dichlorotriazine Films

详细信息    查看全文

• 作者：Iraklii I. Ebralidze ; Mohammad Hanif ; Rubaiyat Arjumand ; Alyza A. Azmi ; Daniel Dixon ; Natalie M. Cann ; Cathleen M. Crudden ; J. Hugh Horton
• 刊名：The Journal of Physical Chemistry C
• 出版年：2012
• 出版时间：February 16, 2012
• 年：2012
• 卷：116
• 期：6
• 页码：4217-4223
• 全文大小：357K
• 年卷期：v.116,no.6(February 16, 2012)
• ISSN：1932-7455

文摘

This article reports adhesion interactions between silicon-supported dichlorotriazine films in various solvents. The formation, chemical composition, and thickness of the overlayer were analyzed by means of X-ray photoelectron spectroscopy (XPS). An atomic force microscopy (AFM) characterization was performed to evaluate the overlayer roughness. Adhesion interactions were measured using chemical force spectrometry (CFS). The purpose of the study is to understand the effect of solvents on the adhesion force between dichlorotriazine films. The tip鈥搒urface adhesion forces measured in octane and cyclooctane were found to be relatively weak. Use of solvents that may participate in 蟺鈥撓€ interactions, such as toluene and trifluoromethyl benzene, as well as a potential monohalogen bond donor, such as CCl₄, did not lead to significant increase in the tip鈥搒urface forces. However, the adhesion forces increase considerably when measured in solvents that contain at least two ether groups, such as dioxane, diethylene glycol dimethyl ether, and triethylene glycol dimethyl ether. These most important interactions in ether-type solvents are due to bridging of the solvent between the two surfaces. Molecular dynamics simulations of the functionalized surfaces are consistent with enhanced solvent bridging interactions when the solvent contains ether functional groups.