Liquid-jet photoelectron spectroscopy of functionalised nanoparticles

液体喷射光电子能谱是一种新兴的研究生色树脂水溶液的有价值的光谱工具。HHF设计并制造了一种独特的液体喷射光电子能谱仪，可循环小体积溶液用于研究定制或昂贵的样品（最初设计用于蛋白质发色团和蛋白质）。最近对有机发色树脂水溶液的测量表明，光电子能谱是一种特别灵敏的探测溶剂化电子的技术，比瞬态吸收光谱更灵敏。该项目将利用这种令人兴奋的能力来测量功能化金和二氧化钛纳米颗粒的电子结构，重要的是，等离子体诱导热电子形成的时间尺度。提高我们对这些过程的详细理解对于设计基于等离子体能量转换的光伏和光催化装置中更有效的太阳能转换至关重要。

Liquid-jet photoelectron spectroscopy is emerging as a valuable spectroscopic tool for studying chromophoresin aqueous solution. HHF has designed and built a unique liquid-jet photoelectron spectrometerthat recirculates small volumes of solution for studying bespoke or expensive samples (originallydesigned for protein chromophores and proteins). Recent measurements of organic chromophoresin aqueous solution have shown that photoelectron spectroscopy is a particularly sensitivetechnique for probing solvated electrons, more so than transient absorption spectroscopy. Thisproject will exploit this exciting capability to measure the electronic structure of functionalised goldand titanium dioxide nanoparticles and, importantly, the timescales for formation of plasmon-inducedhot-electrons. Improving our detailed understanding of these processes is crucially important for thedesign of more efficient conversion of solar energy in photovoltaic and photocatalytic devices basedon plasmonic energy conversion.