化学
光热治疗
解吸
拉曼光谱
纳米结构
纳米颗粒
化学物理
纳米技术
吸附
光热效应
分析化学(期刊)
化学工程
材料科学
物理化学
光学
工程类
物理
色谱法
作者
Shu Hu,Bi-Ju Liu,Jiangshan Feng,Cheng Zong,Kai-Qiang Lin,Xiang Wang,De‐Yin Wu,Bin Ren
摘要
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/°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.
科研通智能强力驱动
Strongly Powered by AbleSci AI