Photopolymerization of thiol-alkynes: Polysulfide networks
A series of photoinitiated reactions involving radical chain addition of dithiols across the triple bonds of dialkynes results in quantitative loss of all of the thiol and alkyne groups in 1:1 molar functional group neat mixtures. The reactions proceed rapidly to give uniform networks with relativel...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Published: |
American Chemical Society
2009
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| Online Access: | http://hdl.handle.net/20.500.11937/29554 |
| _version_ | 1848752835119808512 |
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| author | Chan, J. Zhou, H. Hoyle, C. Lowe, Andrew |
| author_facet | Chan, J. Zhou, H. Hoyle, C. Lowe, Andrew |
| author_sort | Chan, J. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | A series of photoinitiated reactions involving radical chain addition of dithiols across the triple bonds of dialkynes results in quantitative loss of all of the thiol and alkyne groups in 1:1 molar functional group neat mixtures. The reactions proceed rapidly to give uniform networks with relatively narrow differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA) glass transition ranges. The glass transitions of the network films are directly related to the network structure and range from below 0 C° to about 40 C° as determined by DMA. The thiol-alkyne based hydrocarbon networks with sulfide linking groups have refractive index values which extend as high as 1.66. There is a linear relationship between the density and the refractive index, both of which increase linearly with weight percent sulfur. © 2009 American Chemical Society. |
| first_indexed | 2025-11-14T08:14:56Z |
| format | Journal Article |
| id | curtin-20.500.11937-29554 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:14:56Z |
| publishDate | 2009 |
| publisher | American Chemical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-295542017-09-13T15:27:38Z Photopolymerization of thiol-alkynes: Polysulfide networks Chan, J. Zhou, H. Hoyle, C. Lowe, Andrew A series of photoinitiated reactions involving radical chain addition of dithiols across the triple bonds of dialkynes results in quantitative loss of all of the thiol and alkyne groups in 1:1 molar functional group neat mixtures. The reactions proceed rapidly to give uniform networks with relatively narrow differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA) glass transition ranges. The glass transitions of the network films are directly related to the network structure and range from below 0 C° to about 40 C° as determined by DMA. The thiol-alkyne based hydrocarbon networks with sulfide linking groups have refractive index values which extend as high as 1.66. There is a linear relationship between the density and the refractive index, both of which increase linearly with weight percent sulfur. © 2009 American Chemical Society. 2009 Journal Article http://hdl.handle.net/20.500.11937/29554 10.1021/cm803262p American Chemical Society restricted |
| spellingShingle | Chan, J. Zhou, H. Hoyle, C. Lowe, Andrew Photopolymerization of thiol-alkynes: Polysulfide networks |
| title | Photopolymerization of thiol-alkynes: Polysulfide networks |
| title_full | Photopolymerization of thiol-alkynes: Polysulfide networks |
| title_fullStr | Photopolymerization of thiol-alkynes: Polysulfide networks |
| title_full_unstemmed | Photopolymerization of thiol-alkynes: Polysulfide networks |
| title_short | Photopolymerization of thiol-alkynes: Polysulfide networks |
| title_sort | photopolymerization of thiol-alkynes: polysulfide networks |
| url | http://hdl.handle.net/20.500.11937/29554 |