Functionalized self-assembled monolayers and their influence on silver electrodeposition

Autor:	H. Hagenström, Maria Jose Esplandiu
Rok vydání:	2002
Předmět:	chemistry.chemical_classification Stereochemistry Self-assembled monolayer General Chemistry Condensed Matter Physics Electrochemistry law.invention Crystallography chemistry law Monolayer Moiety General Materials Science Self-assembly Scanning tunneling microscope Cyclic voltammetry Alkyl
Zdroj:	Solid State Ionics. 150:39-52
ISSN:	0167-2738
DOI:	10.1016/s0167-2738(02)00262-x
Popis:	We have studied the Ag electrodeposition on bare Au and on Au(111) surfaces covered with alkanethiol SAM (self-assembled monolayer) using cyclic voltammetry (CV) and in situ scanning tunneling microscopy (STM). The SAM composition was varied with respect to the alkyl chain length using ethylene or hexylene backbones on the one hand and with respect to the layer termination on the other hand, introducing –CH3, –OH or –SH groups, respectively. The electrochemical and structural studies in absence of silver ions allowed us to know the density of the different SAMs for the further Ag deposition. Differences among the SAMs as well as between the SAMs and bare gold were noted during the Ag bulk deposition. Such differences are more remarkable when hexanedithiol is used for the SAM. This molecule is adsorbed by only one thiol moiety whereas the other one remains free and exerts silver/thiolate interactions at the SAM/electrolyte interface.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b8847b6c2f013dfdd113d54217a6200a https://doi.org/10.1016/s0167-2738(02)00262-x Zobrazit plný text záznamu Full Text from ScienceDirect