Spontaneous “Phase Separation” of Patterned Binary Alkanethiol Mixtures
- 22 July 2005
- journal article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 127 (32), 11283-11287
- https://doi.org/10.1021/ja042393y
Abstract
This article describes novel phase-separation behavior by a binary mixture of alkanethiols when deposited onto a gold surface using micro- and nanodeposition tools, such as microcontact printing (muCP) and dip-pen nanolithography (DPN). This behavior is significantly different than that observed in the bulk. We demonstrate this behavior using three model compounds: 16-mercaptohexadecanoic acid (MHA), 1-octadecanethiol (ODT), and CF3(CF2)11(CH2)2SH (PFT). The identity of the resulting segregated structure is confirmed by lateral force microscopy (LFM) and by selective metal-organic coordination chemistry. Importantly, this phenomenon can be exploited to print sub-100 nm wide alkanethiol lines via conventional muCP and to form sub-15 nm features using DPN, which is below the ultimate resolution of both these techniques. We also demonstrate that these nano-patterned materials can serve as templates for constructing more complex architectures.Keywords
This publication has 24 references indexed in Scilit:
- Single-Feature Inking and Stamping: A Versatile Approach to Molecular PatterningJournal of the American Chemical Society, 2005
- UNCONVENTIONAL NANOFABRICATIONAnnual Review of Materials Research, 2004
- AFM Study of Water Meniscus Formation between an AFM Tip and NaCl SubstrateThe Journal of Physical Chemistry B, 2004
- Preferential Adsorption of Horse Heart Cytochrome c on Nanometer-Scale Domains of a Phase-Separated Binary Self-Assembled Monolayer of 3-Mercaptopropionic Acid and 1-Hexadecanethiol on Au(111)Nano Letters, 2002
- Multiprotein Immunoassay Arrays Fabricated by Microcontact PrintingLangmuir, 2002
- Selective Replacement of Adsorbed Alkanethiols in Phase-Separated Binary Self-Assembled Monolayers by Electrochemical Partial DesorptionLangmuir, 1997
- Force Microscopy Study of Friction and Elastic Compliance of Phase-Separated Organic Thin FilmsLangmuir, 1994
- Patterned Condensation Figures as Optical Diffraction GratingsScience, 1994
- General equations for describing diffusion on the heterogeneous surface at finite coveragesLangmuir, 1990
- Photochemistry and photophysics from upper triplet levels of 9,10-dibromoanthraceneJournal of the American Chemical Society, 1989