Fundamental Studies of Charge Migration and Delocalization Relevant to Solar Energy Conversion

Therien, Michael J.

University of Pennsylvania

关键词: 14 Solar Energy;    Electron Spin Resonance;    Excitation;    Polarons;    Storage;   

DOI  :  10.2172/1041385
RP-ID  :  DE-FG02-02ERR15299- Final Report
RP-ID  :  FG02-02ER15299
RP-ID  :  1041385

美国|英语

来源: UNT Digital Library

【 摘 要 】

This program aimed to understand the molecular-level principles by which complex chemical systems carry out photochemical charge separation, transport, and storage, and how these insights could impact the design of practical solar energy conversion and storage devices. Towards these goals, this program focused on: (1) carrying out fundamental mechanistic and transient dynamical studies of proton-coupled electron-transfer (PCET) reactions; (2) characterizing and interrogating via electron paramagnetic resonance (EPR) spectroscopic methods novel conjugated materials that feature large charge delocalization lengths; and (3) exploring excitation delocalization and migration, as well as polaron transport properties of meso-scale assemblies that are capable of segregating light-harvesting antennae, nanoscale wire-like conduction elements, and distinct oxidizing and reducing environments.