title: Fabrication of unique chemical patterns and concentration gradients with visible light.
abstract: A modular and general method based on a photomediated ATRA reaction for the spatially controlled functionalization of surfaces with visible light is reported. The ability to control reactivity with light intensity combined with the orthogonality of ATRA chemistry allows well-defined chemically differentiated monolayers and complex nonlinear chemical concentration gradients to be easily prepared. Use of light to mediate these reactions permits spatial regulation and the generation of unique, multifunctional chemical gradients.
authors.affiliation: Materials Research Laboratory, California NanoSystems Institute, Materials Department, Department of Chemistry and Biochemistry, and Biomolecular Science and Engineering, University of California , Santa Barbara, California 93106, United States.
authors.forename: Brett P
authors.initials: BP
authors.lastname: Fors
authors.forename: Justin E
authors.initials: JE
authors.lastname: Poelma
authors.forename: Matthew S
authors.initials: MS
authors.lastname: Menyo
authors.forename: Maxwell J
authors.initials: MJ
authors.lastname: Robb
authors.forename: Daniel M
authors.initials: DM
authors.lastname: Spokoyny
authors.forename: John W
authors.initials: JW
authors.lastname: Kramer
authors.forename: J Herbert
authors.initials: JH
authors.lastname: Waite
authors.forename: Craig J
authors.initials: CJ
authors.lastname: Hawker