Isomerization of Piperylene the Dependence on the Concentration of Sensitizer

Author: Counsell, Ronald Keith

Year: 1963

Degree: Bachelor's thesis

Advisor: Hammond, George Simms

Committee Member: None, None

Option: Chemistry

DOI: 10.7907/2may-d875

Abstract

The data support the idea that the physical transfer of energy from certain sensitizers to piperylene is a reversible process. That similar behavior was observed for 2-acetonaphthone and fluorenone suggests either that in these cases the quenching process is so exothermic that the controlling factor is the decay processes of piperylene triplets; or that as E_t of the sensitizer changes from 53 kcal. to 60 kcal. all four excited piperylene configurations are important. The observed behavior for benzil might be attributed to incomplete data, but perhaps the photostationary states of this compound should be studied more closely.

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