Development of Photoresponsive Polymers and Polymer/Inorganic Composite Materials Based on the Coumarin Chromophore

Development of Photoresponsive Polymers and Polymer/Inorganic Composite Materials Based on the Coumarin Chromophore

Bibliographic Details
Main Author: Fan, Weizheng
Language:English
Published: University of Akron / OhioLINK 2013
Subjects:
Polymer Chemistry
Polymers
Photoresponsive polymer
Coumarin
Composite material
Online Access:http://rave.ohiolink.edu/etdc/view?acc_num=akron1366903513
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spelling ndltd-OhioLink-oai-etd.ohiolink.edu-akron13669035132021-08-03T05:22:45Z Development of Photoresponsive Polymers and Polymer/Inorganic Composite Materials Based on the Coumarin Chromophore Fan, Weizheng Polymer Chemistry Polymers Photoresponsive polymer Coumarin Composite material Stimuli responsive polymers show noticeable changes in their properties in response to environmental stimuli and are used in many applications. Various stimuli such as pH, temperature, and in our case, light have been used to bring about the desired effect. Due to their tunable photoresponsive properties, coumarin and its derivatives have been widely used in many functional polymeric materials. Our group has developed a new class of photoresponsive coumarin polyesters that exhibit crosslinking at 350nm and chain scission properties at 254nm. The first part of the thesis was focused on the development of visible light responsive coumarin chromophores. By substituting bromines on the coumarins, the wavelength at the absorption maximum was redshifted. These new coumarin derivatives have the maximum UV absorption between 390-420nm, which could enable their utility in biomedical chemistry in future. The second part of this thesis was focused on the development of a class of low moduli photoresponsive polymers, based on the coumarin photoactive unit. These new photoresponsive materials can crosslink under 350nm irradiation. The new polymers have low moduli and show viscous properties before irradiation. Upon crosslinking they display a significant change in physical and mechanical properties. In order to extend the applications of these materials, we prepared a series of photoresponsive polymer/inorganic composite materials with silica. We believe, these polymers have the potential for various biomedical applications such as in filling voids in dental and osteological applications. 2013-06-06 English text University of Akron / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=akron1366903513 http://rave.ohiolink.edu/etdc/view?acc_num=akron1366903513 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws.
collection NDLTD
language English
sources NDLTD
topic Polymer Chemistry
Polymers
Photoresponsive polymer
Coumarin
Composite material
spellingShingle Polymer Chemistry
Polymers
Photoresponsive polymer
Coumarin
Composite material
Fan, Weizheng
Development of Photoresponsive Polymers and Polymer/Inorganic Composite Materials Based on the Coumarin Chromophore
author Fan, Weizheng
author_facet Fan, Weizheng
author_sort Fan, Weizheng
title Development of Photoresponsive Polymers and Polymer/Inorganic Composite Materials Based on the Coumarin Chromophore
title_short Development of Photoresponsive Polymers and Polymer/Inorganic Composite Materials Based on the Coumarin Chromophore
title_full Development of Photoresponsive Polymers and Polymer/Inorganic Composite Materials Based on the Coumarin Chromophore
title_fullStr Development of Photoresponsive Polymers and Polymer/Inorganic Composite Materials Based on the Coumarin Chromophore
title_full_unstemmed Development of Photoresponsive Polymers and Polymer/Inorganic Composite Materials Based on the Coumarin Chromophore
title_sort development of photoresponsive polymers and polymer/inorganic composite materials based on the coumarin chromophore
publisher University of Akron / OhioLINK
publishDate 2013
url http://rave.ohiolink.edu/etdc/view?acc_num=akron1366903513
work_keys_str_mv AT fanweizheng developmentofphotoresponsivepolymersandpolymerinorganiccompositematerialsbasedonthecoumarinchromophore
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