Development of a photo-controlled polymeric dry adhesive

Author: 
Date created: 
2017-08-28
Identifier: 
etd10373
Keywords: 
Photochromism
Photoswitching
Dry adhesives
Donor-acceptor Stenhouse adducts
Polymer
ROMP
Abstract: 

The work presented in this thesis describes the design, synthesis, and analysis of a polymeric donor-acceptor Stenhouse adduct (DASA). This photoswitch was chosen as it switches between two isomeric states, open and closed, that are neutral and zwitterionic respectively. The goal of this project was to manipulate this change in polarity to induce a stronger adhesive response in the polymer, due to an increase in the dipole-dipole interaction between the polymer and a contact piece. While the single molecule exhibits reversibility in solution, the polymer does not appear to reverse in solution or in the solid state. There was a change of 18° in the contact angle, indicating a photoinduced change in the intermolecular forces did occur, however this has no significant effect on the bulk adhesive properties.

Document type: 
Thesis
Rights: 
This thesis may be printed or downloaded for non-commercial research and scholarly purposes. Copyright remains with the author.
File(s): 
Senior supervisor: 
Neil Branda
Department: 
Science: Department of Chemistry
Thesis type: 
(Thesis) M.Sc.
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