Fabrication of Unique Chemical Patterns and Concentration Gradients with Visible Light
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.
Additional Information© 2013 American Chemical Society. Received: August 15, 2013; Published: September 11, 2013. We thank the MRSEC program of the National Science Foundation (DMR 1121053) and the Dow Chemical Co. through the Dow Materials Institute at UCSB for financial support. B.P.F. thanks the California NanoSystems Institute for the Elings Prize Fellowship in Experimental Science. J.E.P. thanks the NSF Graduate Research Fellowship for funding. M.J.R. thanks UC Regents, CSP Technologies, and the DOE Office of Science (DOE-SCGF) for graduate fellowships. The authors declare no competing financial interest.
Supplemental Material - ja408467b_si_001.pdf