Highly sensitive NH3 detection based on organic field-effect transistors with tris(pentafluorophenyl)borane as receptor.
J Am Chem Soc
; 134(36): 14650-3, 2012 09 12.
Article
em En
| MEDLINE
| ID: mdl-22934620
ABSTRACT
We have increased organic field-effect transistor (OFET) NH(3) response using tris(pentafluorophenyl)borane (TPFB) as a receptor. OFETs with this additive could detect concentrations of 450 ppb v/v, with a limit of detection of 350 ppb, the highest sensitivity reported to date for semiconductor films; in comparison, when triphenylmethane (TPM) or triphenylborane (TFB) was used as an additive, no obvious improvement in the sensitivity was observed. These OFETs also showed considerable selectivity with respect to common organic vapors and stability toward storage. Furthermore, excellent memory of exposure was achieved by keeping the exposed devices in a sealed container stored at -30 °C, the first such capability demonstrated with OFETs.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Boranos
/
Amônia
/
Hidrocarbonetos Fluorados
Tipo de estudo:
Diagnostic_studies
Idioma:
En
Revista:
J Am Chem Soc
Ano de publicação:
2012
Tipo de documento:
Article
País de afiliação:
Estados Unidos