Reports

Deep UV photochemistry of chemisorbed monolayers: patterned coplanar molecular assemblies

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Science  26 Apr 1991:
Vol. 252, Issue 5005, pp. 551-554
DOI: 10.1126/science.2020853

Abstract

Deep ultraviolet (UV) irradiation is shown to modify organosilane self-assembled monolayer (SAM) films by a photocleavage mechanism, which renders the surface amenable to further SAM modification. Patterned UV exposure creates alternating regions of intact SAM film and hydrophilic, reactive sites. The exposed regions can undergo a second chemisorption reaction to produce an assembly of SAMs in the same molecular plane with similar substrate attachment chemistry. The UV-patterned films are used as a template for selective buildup of fluorophores, metals, and biological cells.