Self-assembled monolayers of dendron thiols for electrodeposition of gold nanostructures: toward fabrication of superhydrophobic/superhydrophilic surfaces and pH-responsive surfaces

Yugui Jiang; Zhiqiang Wang; Xi Yu; Feng Shi; Huaping Xu; Xi Zhang; Mario Smet; Wim Dehaen

doi:10.1021/la047491b

Self-assembled monolayers of dendron thiols for electrodeposition of gold nanostructures: toward fabrication of superhydrophobic/superhydrophilic surfaces and pH-responsive surfaces

Langmuir. 2005 Mar 1;21(5):1986-90. doi: 10.1021/la047491b.

Authors

Yugui Jiang¹, Zhiqiang Wang, Xi Yu, Feng Shi, Huaping Xu, Xi Zhang, Mario Smet, Wim Dehaen

Affiliation

¹ Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China.

PMID: 15723499
DOI: 10.1021/la047491b

Abstract

This paper describes the fabrication of surfaces with different wettability, superhydrophobic/superhydrophilic, and pH-responsive properties. We used a self-assembled monolayer (SAM) of a dendron thiol as the underlying surface for electrodeposition of gold nanostructures. After this modification with a SAM of n-dodecanethiol or 11-mercaptoundecanol, the surface shows remarkable superhydrophobic properties with a contact angle of about 155 degrees and a tilt angle of less than 2 degrees or superhydrophilic properties with a contact angle of about 0 degrees , respectively. Moreover, a large-scale pH-responsive surface was obtained by modification with 2-(11-mercaptoundecanamido)benzoic acid (7) (MUABA). The pH-responsive behavior was amplified by using rough surfaces.