著者
Kohei Shimoda Tsuyohiko Fujigaya Naotoshi Nakashima Yasuro Niidome
出版者
(社)日本化学会
雑誌
Chemistry Letters (ISSN:03667022)
巻号頁・発行日
pp.130457, (Released:2013-06-21)
被引用文献数
3

Poly(N-isopropylacrylamide) (PNIPAM) was coated on gold nanorods (NRs) without forming aggregates. The PNIPAM-coated NRs (PNIPAM-NRs) formed aggregates at higher temperature than the lower critical solution temperature (LCST) of the PNIPAM layers. The aggregation showed reversible spectroscopic responses under repeated temperature cycles. When near infrared (near-IR) light irradiated a PNIPAM-NR solution, the temperature raise up, and formed aggregates that showed broad and weak surface plasmon bands. The spectroscopic responses in near-IR region work as a negative feedback for heating a photoirradiated nanorod solution. The feedback offers spontaneous temperature control of the photoirradiated solution at LCST of PNIPAM.