Acquistion of a Multifrequency Phase/Modulation Fluorescence Lifetime Spectrometer Upgrade

在主要研究仪器（MRI）采集项目的支持下，位于布罗克波特的纽约州立大学化学系将获得一个多频相位调制模块来升级荧光光谱仪，以测量荧光发射的时间响应。这将用于研究磷离子液体与荧光团和超临界流体之间的相互作用。其他实验将研究氧在离子液体中的扩散。时间分辨荧光光谱实验将进行非均质软材料和DNA与染料的相互作用。荧光分光计测量样品在给定频率或能量的可见光或紫外线辐射激发后发出的光。发射的荧光信号的频率和强度提供了有关被照射物质的结构和动力学的信息。这种升级到稳态荧光仪将允许对发射信号的时间响应进行研究，以提供对溶剂中分子的溶剂化和旋转扩散动力学的见解。该仪器还将加强纽约州立大学布鲁克波特分校本科生的教学和研究。它将提供给大罗切斯特（纽约州）本科研究联盟的其他八所机构，包括两所社区学院。

With support from the Major Research Instrumentation (MRI) Acquisition Program, the Department of Chemistry at SUNY College at Brockport will acquire a multifrequency phase modulation module to upgrade a fluorescence spectrometer in order to measure the time response of fluorescence emission. This will be used to conduct research on the interactions between phosphonium ionic liquids with fluorophores and with supercritical fluids. Other experiments will study oxygen diffusion in ionic liquids. Time resolved fluorescent spectroscopy experiments will be performed on heterogeneous soft materials and on the interaction of DNA with dyes. A spectrofluorometer measures the light emitted from a sample after it is excited by visible or ultraviolet radiation at a given frequency or energy. The frequency and intensity of the emitted fluorescence signal provides information on the structure and dynamics of the substance being irradiated. This upgrade to a steady state fluorimeter will allow studies on the time response of the emitted signal to provide insight on the dynamics of solvation and rotational diffusion of molecules in a solvent. The instrument will also enhance teaching and research of undergraduates at SUNY Brockport. It will be made available to eight other institutions involved in the Greater Rochester (NY) Undergraduate Research Alliance including two community colleges.