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Complications in the Systematic Study of Photochemical Mechanisms


Vesley, George Francis (1968) Complications in the Systematic Study of Photochemical Mechanisms. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/v6eb-y708.


The rate constants for energy transfer have been measured by flash spectroscopic techniques. These results show that 1,3-cyclohexadiene undergoes a nonvertical transition when low energy sensitizers are used.

The quantum yields for the high energy sensitized dimerization of 1,3-cyclohexadiene are consistant with the simple mechanism proposed.

The use of 1,2-benzanthracene, a low energy sensitizer, to sensitize the dimerization of 1,3-cyclohexadiene has been studied in detail. The results show that in addition to energy transfer from donor to acceptor, other steps such as reversible energy transfer, adduct formation, singlet quenching of aromatic hydrocarbons by dienes and sensitizer-sensitizer interactions are important.

Item Type:Thesis (Dissertation (Ph.D.))
Subject Keywords:Chemistry
Degree Grantor:California Institute of Technology
Division:Chemistry and Chemical Engineering
Major Option:Chemistry
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Hammond, George Simms
Thesis Committee:
  • Unknown, Unknown
Defense Date:6 September 1967
Record Number:CaltechETD:etd-03192009-135529
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:1029
Deposited By: Imported from ETD-db
Deposited On:19 Mar 2009
Last Modified:19 Apr 2021 22:37

Thesis Files

PDF (Vesley_gf_1968.pdf) - Final Version
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