Spontaneous temperature control using reversible spectroscopic responses of PNIPAM-coated gold nanorods

Kohei Shimoda; Tsuyohiko Fujigaya; Naotoshi Nakashima; Yasuro Niidome

doi:10.1246/cl.130457

Spontaneous temperature control using reversible spectroscopic responses of PNIPAM-coated gold nanorods

Kohei Shimoda, Tsuyohiko Fujigaya, Naotoshi Nakashima, Yasuro Niidome

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

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 a PNIPAM-NR solution was irradiated with near-infrared (near-IR) light, the temperature increased and aggregates formed showing broad and weak surface plasmon bands. The spectroscopic responses in near-IR work as a negative feedback for heating a photoirradiated nanorod solution. The feedback offers spontaneous temperature control of the photoirradiated solution at the LCST of PNIPAM.

Original language	English
Pages (from-to)	1247-1249
Number of pages	3
Journal	Chemistry Letters
Volume	42
Issue number	10
DOIs	https://doi.org/10.1246/cl.130457
Publication status	Published - 2013

All Science Journal Classification (ASJC) codes

Chemistry(all)

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title = "Spontaneous temperature control using reversible spectroscopic responses of PNIPAM-coated gold nanorods",

abstract = "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 a PNIPAM-NR solution was irradiated with near-infrared (near-IR) light, the temperature increased and aggregates formed showing broad and weak surface plasmon bands. The spectroscopic responses in near-IR work as a negative feedback for heating a photoirradiated nanorod solution. The feedback offers spontaneous temperature control of the photoirradiated solution at the LCST of PNIPAM.",

author = "Kohei Shimoda and Tsuyohiko Fujigaya and Naotoshi Nakashima and Yasuro Niidome",

year = "2013",

doi = "10.1246/cl.130457",

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publisher = "The Chemical Society of Japan",

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T1 - Spontaneous temperature control using reversible spectroscopic responses of PNIPAM-coated gold nanorods

AU - Shimoda, Kohei

AU - Fujigaya, Tsuyohiko

AU - Nakashima, Naotoshi

AU - Niidome, Yasuro

PY - 2013

Y1 - 2013

N2 - 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 a PNIPAM-NR solution was irradiated with near-infrared (near-IR) light, the temperature increased and aggregates formed showing broad and weak surface plasmon bands. The spectroscopic responses in near-IR work as a negative feedback for heating a photoirradiated nanorod solution. The feedback offers spontaneous temperature control of the photoirradiated solution at the LCST of PNIPAM.

AB - 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 a PNIPAM-NR solution was irradiated with near-infrared (near-IR) light, the temperature increased and aggregates formed showing broad and weak surface plasmon bands. The spectroscopic responses in near-IR work as a negative feedback for heating a photoirradiated nanorod solution. The feedback offers spontaneous temperature control of the photoirradiated solution at the LCST of PNIPAM.

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JO - Chemistry Letters

JF - Chemistry Letters

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Spontaneous temperature control using reversible spectroscopic responses of PNIPAM-coated gold nanorods

Abstract

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