MRI: Acquisition of Transient Absorption Spectrometer for Multidisciplinary Research in Chemistry, Materials Science and Solar Energy Conversion

凭借主要研究仪器计划（MRI）的这一奖项和化学研究仪器计划（CRIF）的支持，来自阿默斯特学院的Elizabeth Young教授及其同事Alexi Arango（霍利奥克山），迈克尔巴恩斯（马萨诸塞大学阿默斯特分校）和Sankaran Thayumanavan（马萨诸塞大学阿默斯特分校）将获得一个瞬态吸收光谱仪与飞秒钛：蓝宝石放大器系统为五个学院联盟（阿默斯特学院，霍利奥克山学院，史密斯学院，汉普郡学院和马萨诸塞州阿默斯特大学）。一般来说，发射红光和近红外光的可调谐钛：蓝宝石激光器用于照射物质，以研究它们如何响应短能量脉冲。这提供了关于分子结构和原子间相互作用的信息。超快（飞秒）方法可以研究重要的生物学机制，如光合作用反应中心的电荷转移动力学，这对植物如何利用太阳能生产食物具有重要意义。该奖项将加强各级研究和教育，特别是在以下领域：（a）研究有机光伏材料中的电荷分离（CS）和重组（CR）动力学;（B）在薄膜双层光伏组件中基于BODIPY光氧化剂和CS和CR的共价连接的供体-受体（D-A）分子的研究;和（c）在结晶和半结晶聚合物聚集体中激子动力学的研究。

With this award from the Major Research Instrumentation Program (MRI) and support from the Chemistry Research Instrumentation Program (CRIF), Professor Elizabeth Young from Amherst College and colleagues Alexi Arango (Mount Holyoke), Michael Barnes (University of Massachussetts-Amherst) and Sankaran Thayumanavan (University of Massachussetts-Amherst) will acquire a transient absorption spectrometer with a femtosecond Ti:sapphire amplifier system for a five-college consortium (Amherst College, Mount Holyoke College, Smith College, Hampshire Colleges and University of Massachusetts-Amherst). In general, tunable Ti:sapphire lasers that emit red and near-infrared light are used to irradiate a substance to investigate how they respond to short energy pulses. This provides information on the molecular structure and interactions between atoms. The ultrafast (femtosecond) methods allow study of important biological mechanisms such as the charge transfer dynamics in photosynthesis reaction centers that have important implications in how plants utilize solar energy to produce food.This award will enhance research and education at all levels, especially in areas such as (a) investigation of charge separation (CS) and recombination (CR) dynamics in organic photovoltaic materials; (b) studys of covalently-linked donor-acceptor (D-A) molecules based on BODIPY photooxidant and CS and CR in thin-film bilayer photovoltaic assemblies; and (c) studies of exciton dynamics in crystalline and semicrystalline polymer aggregates.