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Photosensitized CIS-TRANS isomerization of 2,3-diphenylbutene-2 investigation of anomalous sensitizers for substituted Stilbene isometrization

Citation

Coyne, Lelia M. (1967) Photosensitized CIS-TRANS isomerization of 2,3-diphenylbutene-2 investigation of anomalous sensitizers for substituted Stilbene isometrization. Dissertation (Ph.D.), California Institute of Technology. http://resolver.caltech.edu/CaltechTHESIS:10122015-145521569

Abstract

The behavior of the photosensitized cis-trans isomerization of 2,3-diphenylbutene-2 was studied as a function of sensitizer energy by previously established methods. In addition, certain sensitizers for which parameters other than energy transfer are operative in inducting isomerizations, were studied in more detail. Sensitization of various stilbenes and substituted stilbenes by triphenylene is discussed in terms of excited state complex formation with stilbene. Sensitization by quinones, halogen-containing aromatics and 1,2-diketones is discussed in terms of attack by photolytically produced free radicals, either by addition to and elimination from the double bond, or in the cases of 1,2-diphenylpropene and 2,3-diphenylbutene-2, by hydrogen abstraction from one of the methyl groups and reversible abstraction by the allylic radical to produce cis-trans isomerized substrate and the structurally isomerized products, 2,3-diphenylpropene and 2,3-diphenylbutene-1.

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:Restricted to Caltech community only
Research Advisor(s):
  • Hammond, George Simms
Thesis Committee:
  • Unknown, Unknown
Defense Date:28 October 1966
Funders:
Funding AgencyGrant Number
CaltechUNSPECIFIED
Record Number:CaltechTHESIS:10122015-145521569
Persistent URL:http://resolver.caltech.edu/CaltechTHESIS:10122015-145521569
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:9214
Collection:CaltechTHESIS
Deposited By: Leslie Granillo
Deposited On:15 Oct 2015 18:00
Last Modified:15 Oct 2015 18:00

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