Molecular-Complex Formation of Syndiotactic Polystyrene with Stable Radical Molecules
The formation of a molecular‐complex crystalline phase of syndiotactic polystyrene (sPS) that contains a stable nitroxide radical compound, 2,2,6,6‐tetramethylpiperidinyl‐N‐oxyl (TEMPO), is confirmed by IR and electron spin resonance (ESR) spectroscopy, X‐ray diffractometry, and thermogravimetric an...
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| Veröffentlicht in: | Macromolecular rapid communications. 2006-10, Vol.27 (19), p.1643-1647 |
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| container_title | Macromolecular rapid communications. |
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| creator | Kaneko, Fumitoshi Uda, Yukihiro Kajiwara, Atsushi Tanigaki, Nobutaka |
| description | The formation of a molecular‐complex crystalline phase of syndiotactic polystyrene (sPS) that contains a stable nitroxide radical compound, 2,2,6,6‐tetramethylpiperidinyl‐N‐oxyl (TEMPO), is confirmed by IR and electron spin resonance (ESR) spectroscopy, X‐ray diffractometry, and thermogravimetric analysis. Through a guest exchange procedure assisted by a plasticizing agent, the original guest (chloroform) contained in the starting clathrate phase is completely replaced by TEMPO. Although the conformational regularity of the sPS helices in the resultant crystalline phase that contains TEMPO is similar to that in the starting clathrate phase, the host lattice expands in the 010 direction. The guest TEMPO molecules exhibit a significantly broadened ESR signal because of their highly concentrated state in the complex crystalline phase.
Thermogravimetric measurement of a powder sample of the sPS/TEMPO complex. |
| doi_str_mv | 10.1002/marc.200600432 |
| format | Article |
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Thermogravimetric measurement of a powder sample of the sPS/TEMPO complex.</description><subject>Applied sciences</subject><subject>ESR/EPR</subject><subject>Exact sciences and technology</subject><subject>host-guest systems</subject><subject>Organic polymers</subject><subject>Physicochemistry of polymers</subject><subject>polystyrene</subject><subject>Properties and characterization</subject><subject>Structure, morphology and analysis</subject><subject>structure-property relations</subject><subject>TGA</subject><issn>1022-1336</issn><issn>1521-3927</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2006</creationdate><recordtype>article</recordtype><recordid>eNqFkDFPwzAQhS0EEqWwMmdhTDnbSZyMJYKC1BbUUkAsluPYwpDGlR3U5t-TqlVhY7ob3vfu3UPoEsMAA5DrpXByQAASgIiSI9TDMcEhzQg77nYgJMSUJqfozPtPAEgjID20mNhKye9KuDC3y1WlNsGddUvRGFsHVgfzti6NbYRsjAyebNX6pnWqVsHaNB_BvBFFpYKZKI0UVbD3Uv4cnWhReXWxn320uLt9zu_D8ePoIR-OQ0lj1uVhLI1JlMUpKVXCoNCQFVInGca0-4GSJAIcayWoToQSShU01lpFBSuFLFNK-2iw85XOeu-U5itnuh5ajoFvS-HbUvihlA642gEr4bvE2olaGv9LpZhlDEOny3a6talU-48rnwxn-d8b4Y41vlGbAyvcF08YZTF_nY749CV_m77fjDmjP65dg4A</recordid><startdate>20061002</startdate><enddate>20061002</enddate><creator>Kaneko, Fumitoshi</creator><creator>Uda, Yukihiro</creator><creator>Kajiwara, Atsushi</creator><creator>Tanigaki, Nobutaka</creator><general>WILEY-VCH Verlag</general><general>WILEY‐VCH Verlag</general><general>Wiley</general><scope>BSCLL</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20061002</creationdate><title>Molecular-Complex Formation of Syndiotactic Polystyrene with Stable Radical Molecules</title><author>Kaneko, Fumitoshi ; Uda, Yukihiro ; Kajiwara, Atsushi ; Tanigaki, Nobutaka</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3572-17785249582de670bf09bcf691130433264015fea3f6aeaeeb35ffe4b7dacd833</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2006</creationdate><topic>Applied sciences</topic><topic>ESR/EPR</topic><topic>Exact sciences and technology</topic><topic>host-guest systems</topic><topic>Organic polymers</topic><topic>Physicochemistry of polymers</topic><topic>polystyrene</topic><topic>Properties and characterization</topic><topic>Structure, morphology and analysis</topic><topic>structure-property relations</topic><topic>TGA</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kaneko, Fumitoshi</creatorcontrib><creatorcontrib>Uda, Yukihiro</creatorcontrib><creatorcontrib>Kajiwara, Atsushi</creatorcontrib><creatorcontrib>Tanigaki, Nobutaka</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><jtitle>Macromolecular rapid communications.</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kaneko, Fumitoshi</au><au>Uda, Yukihiro</au><au>Kajiwara, Atsushi</au><au>Tanigaki, Nobutaka</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Molecular-Complex Formation of Syndiotactic Polystyrene with Stable Radical Molecules</atitle><jtitle>Macromolecular rapid communications.</jtitle><addtitle>Macromol. Rapid Commun</addtitle><date>2006-10-02</date><risdate>2006</risdate><volume>27</volume><issue>19</issue><spage>1643</spage><epage>1647</epage><pages>1643-1647</pages><issn>1022-1336</issn><eissn>1521-3927</eissn><abstract>The formation of a molecular‐complex crystalline phase of syndiotactic polystyrene (sPS) that contains a stable nitroxide radical compound, 2,2,6,6‐tetramethylpiperidinyl‐N‐oxyl (TEMPO), is confirmed by IR and electron spin resonance (ESR) spectroscopy, X‐ray diffractometry, and thermogravimetric analysis. Through a guest exchange procedure assisted by a plasticizing agent, the original guest (chloroform) contained in the starting clathrate phase is completely replaced by TEMPO. Although the conformational regularity of the sPS helices in the resultant crystalline phase that contains TEMPO is similar to that in the starting clathrate phase, the host lattice expands in the 010 direction. The guest TEMPO molecules exhibit a significantly broadened ESR signal because of their highly concentrated state in the complex crystalline phase.
Thermogravimetric measurement of a powder sample of the sPS/TEMPO complex.</abstract><cop>Weinheim</cop><pub>WILEY-VCH Verlag</pub><doi>10.1002/marc.200600432</doi><tpages>5</tpages></addata></record> |
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| source | Wiley Online Library Journals Frontfile Complete |
| subjects | Applied sciences ESR/EPR Exact sciences and technology host-guest systems Organic polymers Physicochemistry of polymers polystyrene Properties and characterization Structure, morphology and analysis structure-property relations TGA |
| title | Molecular-Complex Formation of Syndiotactic Polystyrene with Stable Radical Molecules |
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