Optical trapping and fluorescence analysis of thermo-responsive poly(N-alkylacrylamide) microgel particles in water

Yuriko Matsumura*, Chie Hosokawa, Hiroyuki Yoshikawa, Kaoru Iwai, Hiroshi Masuhara

*Corresponding author for this work

研究成果: Paper同行評審

摘要

When laser beam was focused into nanoparticle suspensions, nanoparticles can be trapped in the focal spot due to optical gradient force. Here we report the optical trapping and fluorescence analysis of poly(N-isopropylacrylamide) (PNIPAM) and its related polymer microgel particles which were labeled with 4-N-(2-acryloyloxyethyl)-N-methylamino-7-N,N-dimethylaminosulfonyl-2,1, 3-benzoxadiazole (DBD-AE) dispersed in water. The DBD-AE labeled PNIPAM microgel particles were trapped at the focal point by irradiation with cw-Nd 3+:YAG laser (λ = 1064 nm) in water and the fluorescence intensity of the DBD-AE labeled PNIPAM microgel particles excited by diode laser (λ = 405 nm) increased stepwise. We succeeded to fluorescence analysis of trapped single microgel particle.

原文English
頁數1
出版狀態Published - 19 十月 2006
事件55th SPSJ Annual Meeting - Nagoya, Japan
持續時間: 24 五月 200626 五月 2006

Conference

Conference55th SPSJ Annual Meeting
國家Japan
城市Nagoya
期間24/05/0626/05/06

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