Journal article

Poly(N-isopropylacrylamide) capped plasmonic nanoparticles as resonance intensity-based temperature sensors with linear correlation

Yiyi Liu, Xiaohui Dai, Sudaraka Mallawaarachchi, Harini Hapuarachchi, Qiandian Shi, Dashen Dong, San H Thang, Malin Premaratne, Wenlong Cheng

JOURNAL OF MATERIALS CHEMISTRY C | ROYAL SOC CHEMISTRY | Published : 2017

Abstract

Thermosensitive polymer capped plasmonic nanoparticles are novel thermal nanofluids with potential sensing applications. Previous research efforts have been focused only on monitoring plasmonic resonance peak shifts caused by aggregation as temperature varied. However, to date, no linear relationship between the resonance peak shift and temperature has been established. Here, we systematically investigate how plasmonic resonance peak intensity responds to solution temperature using poly(N-isopropylacrylamide)-capped gold nanorods (AuNRs) and nanobipyramids (AuNBPs) under aggregation-free conditions. Our results clearly reveal the linear correlation between longitudinal resonance peak intensi..

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Grants

Awarded by ARC discovery projects


Funding Acknowledgements

This work was financially supported by ARC discovery projects DP140100052, DP170102208 and DP140100883. This work was performed in part at the Melbourne Centre for Nanofabrication (MCN) in the Victorian Node of the Australian National Fabrication Facility (ANFF). The authors also acknowledge Monash Center for Electron Microscopy and School of Chemistry, Monash University for the permission to use their Chemistry Teaching Lab facilities. Y. Liu and X. Dai contributed equally to this work.