TY - JOUR
T1 - Spectral dependence of gold nanorods on the optical properties of substrates and adsorption of polypeptides
AU - Niidome, Yasuro
AU - Nakamura, Yuki
AU - Honda, Kanako
AU - Nakashima, Naotoshi
N1 - Funding Information:
This work was partially supported by a Grant-in-Aid for Scientific Research in the Priority Area “Strong Photon-Molecule Coupling Fields (no. 470 )” and a Grant-in-Aid for the Global COE Program, “Science for Future Molecular Systems”, from the Ministry of Education, Culture, Sports, Science and Technology of the Japanese Government .
PY - 2011/6/25
Y1 - 2011/6/25
N2 - Gold nanorods (NRs) wrapped with poly(styrene sulfonate) were fixed on glass or indium tin oxide (ITO) substrates that had been modified with polycationic polymer or 3-aminopropyltrimethoxysilane layers. The spectral properties of the NRs were affected by the refractive indices of the substrates and their surface conditions. Surface modification with poly(styrene sulfonate) and avidin molecules shifted the longitudinal surface plasmon (SP) bands to longer wavelength when the substrates were placed in air. In water and a buffered solution, red shifts of the SP bands were also observed, but the shift shifts were not as large as that in the air. It was found that refractive indices around the polymer-wrapped NRs were sensitive to the adsorption of organic molecules even in the aqueous media.
AB - Gold nanorods (NRs) wrapped with poly(styrene sulfonate) were fixed on glass or indium tin oxide (ITO) substrates that had been modified with polycationic polymer or 3-aminopropyltrimethoxysilane layers. The spectral properties of the NRs were affected by the refractive indices of the substrates and their surface conditions. Surface modification with poly(styrene sulfonate) and avidin molecules shifted the longitudinal surface plasmon (SP) bands to longer wavelength when the substrates were placed in air. In water and a buffered solution, red shifts of the SP bands were also observed, but the shift shifts were not as large as that in the air. It was found that refractive indices around the polymer-wrapped NRs were sensitive to the adsorption of organic molecules even in the aqueous media.
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U2 - 10.1016/j.jphotochem.2011.02.015
DO - 10.1016/j.jphotochem.2011.02.015
M3 - Article
AN - SCOPUS:79960470351
SN - 1010-6030
VL - 221
SP - 204
EP - 208
JO - Journal of Photochemistry and Photobiology A: Chemistry
JF - Journal of Photochemistry and Photobiology A: Chemistry
IS - 2-3
ER -