Exploiting substrate stress to modify nanoscale SAM patterns.

We describe a simple method based on postadsorption substrate stress induction to modify and control nanoscale phase-separated patterns formed in self-assembled monolayers. We show using mesoscale computer simulations and experiments that this method helps quickly progress a kinetically arrested patchy pattern into the equilibrium striped pattern, which is otherwise difficult to access. This work also establishes the role of curvature in the formation of aligned stripes several molecules wide on spherical nanoparticles and nanocylinders.

[1]  George M. Whitesides,et al.  Structure of monolayers formed by coadsorption of two n-alkanethiols of different chain lengths on gold and its relation to wetting , 1992 .

[2]  D. Allara,et al.  Phase Separation of Mixed-Composition Self-Assembled Monolayers into Nanometer Scale Molecular Domains , 1994 .

[3]  G. Whitesides,et al.  Phase behavior of two-component self-assembled monolayers of alkanethiolates on gold , 1994 .

[4]  D. Allara,et al.  Nanometer-scale phase separation in mixed composition self-assembled monolayers , 1996 .

[5]  P. B. Warren,et al.  DISSIPATIVE PARTICLE DYNAMICS : BRIDGING THE GAP BETWEEN ATOMISTIC AND MESOSCOPIC SIMULATION , 1997 .

[6]  P. Jakob,et al.  Effect of substrate strain on adsorption , 1998, Science.

[7]  Z. Suo,et al.  Symmetry breaking in self-assembled monolayers on solid surfaces: Anisotropic surface stress , 2002 .

[8]  K. Sieradzki,et al.  Adatoms and their relation to surface stress , 2003 .

[9]  Francesco Stellacci,et al.  Spontaneous assembly of subnanometre-ordered domains in the ligand shell of monolayer-protected nanoparticles , 2004, Nature materials.

[10]  宁北芳,et al.  疟原虫var基因转换速率变化导致抗原变异[英]／Paul H, Robert P, Christodoulou Z, et al//Proc Natl Acad Sci U S A , 2005 .

[11]  G. Whitesides,et al.  Self-assembled monolayers of thiolates on metals as a form of nanotechnology. , 2005, Chemical reviews.

[12]  F. Solis,et al.  Charge induced pattern formation on surfaces: segregation in cylindrical micelles of cationic-anionic peptide-amphiphiles. , 2005, The Journal of chemical physics.

[13]  W. Lu,et al.  Engineering nanophase self-assembly with elastic field , 2005 .

[14]  Francesco Stellacci,et al.  From homoligand- to mixed-ligand- monolayer-protected metal nanoparticles: a scanning tunneling microscopy investigation. , 2006, Journal of the American Chemical Society.

[15]  S. Glotzer,et al.  Entropy-mediated patterning of surfactant-coated nanoparticles and surfaces. , 2007, Physical review letters.

[16]  F. Rosei,et al.  Metal nanoparticles: from "artificial atoms" to "artificial molecules". , 2007, Angewandte Chemie.

[17]  Francesco Stellacci,et al.  Divalent Metal Nanoparticles , 2007, Science.

[18]  S. Glotzer,et al.  Size limitations for the formation of ordered striped nanoparticles. , 2008, Journal of the American Chemical Society.

[19]  A. Jackson,et al.  The role of nanostructure in the wetting behavior of mixed-monolayer-protected metal nanoparticles , 2008, Proceedings of the National Academy of Sciences.

[20]  Francesco Stellacci,et al.  Water-soluble amphiphilic gold nanoparticles with structured ligand shells. , 2008, Chemical communications.

[21]  Francesco Stellacci,et al.  Surface-structure-regulated cell-membrane penetration by monolayer-protected nanoparticles. , 2008, Nature materials.

[22]  L. -. He,et al.  Pattern formation on a stretchable substrate , 2008 .