Photoswitching of Azobenzene Derivatives Formed on Planar and Colloidal Gold Surfaces

Autor:	Louise Williams, S. R. Johnson, Stephen D. Evans, H. Ringsdorf, Heiko Wolf
Rok vydání:	1998
Předmět:	Azo compound Surface plasmon Nanoparticle Surfaces and Interfaces Condensed Matter Physics Photochemistry Cis trans isomerization chemistry.chemical_compound chemistry Azobenzene Colloidal gold Monolayer Electrochemistry General Materials Science Surface plasmon resonance Spectroscopy
Zdroj:	Scopus-Elsevier
ISSN:	1520-5827 0743-7463
DOI:	10.1021/la980450t
Popis:	Azobenzene-derivatized alkanethiols have been used to form self-assembled monolayers on planar and colloidal gold substrates. Five derivatives were used allowing investigation of the effects of chain length, ω-functionality and a comparison of thiol versus disulfide. Single-component monolayer films, i.e., consisting only of the “azo”-derivatized thiols (disulfides), showed no evidence of photoswitching. However, “photoswitching” was observed in “mixed monolayers”, in self-assembled multilayers, and on nanoparticles coated with mixed monolayers. The photoswitching was observed using surface plasmon resonance on the planar samples and by UV−vis spectroscopy from nanoparticle solutions.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4bdd6f95752543184ce5527fee35c80e https://doi.org/10.1021/la980450t Zobrazit plný text záznamu