Date of Submission

Spring 2024

Academic Program

Chemistry and Biochemistry

Project Advisor 1

Christopher LaFratta

Abstract/Artist's Statement

Transient absorption spectroscopy is a time-resolved technique that can be used to study electron photoexcitation and to analyze photochemical reactions. Our system was created using two nanosecond-pulsed lasers, a pump and a probe, at wavelengths 520 nm and 450 nm respectively. The pump laser was used to excite the molecule zinc tetraphenylporphyrin (ZnTPP) while the probe laser was used to measure the change in absorption of the molecule, which is known as transient absorbance (TA). The time delay between the pump and probe is varied electronically allowing the TA signal to be monitored for several microseconds. The addition of C 70 fullerenes to the ZnTPP solution also enabled charge transfer kinetics to be studied.

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On-Campus only

Creative Commons License

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