期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 140, 期 42, 页码 13680-13686出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.8b06083
关键词
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资金
- National Natural Science Foundation of China [21633005, 21790354, 21711530704, 21621091]
- Ministry of Science and Technology of China [2016YFA0200601, 2013CB933703]
Precise measurement of the temperature right at the surface of thermoplasmonic nanostructures is a grand challenge but extremely important for the photochemical reaction and photothermal therapy. We present here a method capable of measuring the surface temperature of plasmonic nanostructures with surface-enhanced Raman spectroscopy, which is not achievable by existing methods. We observe a sensitive shift of stretching vibration of a phenyl isocyanide molecule with temperature (0.232 cm(-1)/degrees C) as a result of the temperature-dependent molecular orientation change. We develop this phenomenon into a method capable of measuring the surface temperature of Au nanoparticles (NPs) during plasmonic excitation, which is validated by monitoring the laser-induced desorption process of the adsorbed CO on Au NP surface. We further extend the method into a more demanding single living cell thermometry that requires a high spatial resolution, which allows us to successfully monitor the extracellular temperature distribution of a single living cell experiencing cold resistance and the intracellular temperature change during the calcium ion transport process.
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