Intramolecular charge separation in spirobifluorene-based donor-acceptor compounds adsorbed on Au and indium tin oxide electrodes

Surface photovoltage (SPV) measurements were performed with a Kelvin-probe in spirobifluorene-based donor (diphenylamine)-acceptor (dicyano or cyanoacrylic acid moieties) compounds adsorbed from highly diluted solutions onto Au and indium tin oxide electrode surfaces. Strong intramolecular charge se...

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Detalhes bibliográficos
Autores: Heredia, Daniel Alejandro, Otero, Luis Alberto, Gervaldo, Miguel Andres, Fungo, Fernando Gabriel, Dittrich, Thomas, Lin, Chih-Yen, Chi, Liang-Chen, Fang, Fu Chuan, Wong, Ken Tsung
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2013
País:Argentina
Recursos:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/131346
Acesso em linha:http://hdl.handle.net/11336/131346
Access Level:acceso abierto
Palavra-chave:CHARGE SEPARATION
KEYWORDS
SPIROBIFLUORENE
SURFACE PHOTOVOLTAGE
https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
Descrição
Resumo:Surface photovoltage (SPV) measurements were performed with a Kelvin-probe in spirobifluorene-based donor (diphenylamine)-acceptor (dicyano or cyanoacrylic acid moieties) compounds adsorbed from highly diluted solutions onto Au and indium tin oxide electrode surfaces. Strong intramolecular charge separation (negative SPV signals up to more than 0.1 V) due to directed molecule adsorption was observed only for spirobifluorene donor-acceptor compounds with carboxylic acid moiety. SPV signals and onset energies of electronic transitions depended on ambience conditions.

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