期刊
CHEMPHYSCHEM
卷 17, 期 18, 页码 2791-2794出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cphc.201600571
关键词
biosensors; carbon; dopamine; graphene; nanotubes
资金
- DBT-Ramalingaswamy
We report cellphone-based detection of dopamine with atto-molar sensitivity in clinical samples with the use of a surface plasmon-coupled emission (SPCE) platform. To this end, silver-coated carbon nanotubes were used as spacer and cavity materials on SPCE substrates to obtain up to 100-fold fluorescence enhancements. The presence of silver on the carbon nanotubes helped to overcome fluorescence quenching arising due to pi-pi interactions between the carbon nanotube and rhodamine 6G. The competing adsorption of dopamine versus rhodamine 6G on graphene oxide was utilized to develop this sensing platform.
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