Picosecond Time-Resolved Fluorescence Instrumentation for Chemical and Physical Sensing
Abstract
A laser system, optical train and detection electronics were constructed for the measurement of picosecond luminescence dynamics. The requested instrumentation provided new experimental capabilities for AFOSR program F49620-98-1-0203 (Optical Supramolecules for Chemical and Physical Sensing, PI - Daniel G. Nocera), which addresses many diverse chemical and physical sensing needs of the United States Air Force. The new sensing techniques developed in the program all are based on monitoring a bright luminescence from large molecules or supramolecules. The requested instrumentation provided information on the most fundamental parameter for defining the crucial photophysical property governing luminescence, the excited state lifetime from which the essential nonradiative and radiative rate constants could be derived. By using the requested instrumentation to follow the excitation energy, in real time, about the supramolecules, pathways that lead to non- constructive luminescence were designed out of the molecule, thus allowing the program to create optimized supramolecules to meet Air Force sensing needs. The requested DURIP instrumentation had strong cost sharing and infrastructure support. MIT allocated over 1,500 square feet (at $500/sq ft) for the proposed instrumentation and underwrote the costs for the renovation of this laboratory space. The architectural firm of Imai/Keller, specializing in laboratory design and construction, oversaw the renovation. In addition, the DURIP instrumentation enjoyed strong direct cost sharing benefits.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 05, 2000
- Accession Number
- ADA383200
Entities
People
- Daniel G. Nocera
Organizations
- Massachusetts Institute of Technology