Mesoporous silica thin films as a spatially extended probe of interfacial electric fields for amplified signal transduction in surface plasmon resonance spectroscopy.
A new simpler concept about the signal amplification of surface plasmon resonance (SPR) that is based on the utilization of mesoporous silica thin films is demonstrated. As compared to monolayer based coatings, mesoporous silica thin films of approximately 200 nm extend the interaction arena away from the metal, thus permitting the integration of the change in optical contrast at different distances from the sensor surface.
Kang
Taewook
T
School of Chemical and Biological Engineering, Seoul National University, San 56-1, Shilim-dong, Kwanak-gu, Seoul, Korea.
Oh
Seogil
S
Hong
Surin
S
Moon
Jungwoo
J
Yi
Jongheop
J