Highly efficient metal() porphyrin and salen complexes for the polymerization of -lactide under ambient conditions
Ligated metal( iii ) complexes, Al( iii ), In( iii ), Cr( iii ), and Co( iii ), containing tetraphenylporphyrin (TPP) and cyclohexylsalen (Cy-salen) ligands were investigated for the polymerization of rac -lactide ( rac -LA). A combination of metal complexes, co-catalyst, and co-initiator was shown...
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| Veröffentlicht in: | Dalton transactions : an international journal of inorganic chemistry 2019-03, Vol.48 (1), p.3223-323 |
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| container_title | Dalton transactions : an international journal of inorganic chemistry |
| container_volume | 48 |
| creator | Praban, Siriwan Piromjitpong, Parichat Balasanthiran, Vagulejan Jayaraj, Savithra Chisholm, Malcolm H Tantirungrotechai, Jonggol Phomphrai, Khamphee |
| description | Ligated metal(
iii
) complexes, Al(
iii
), In(
iii
), Cr(
iii
), and Co(
iii
), containing tetraphenylporphyrin (TPP) and cyclohexylsalen (Cy-salen) ligands were investigated for the polymerization of
rac
-lactide (
rac
-LA). A combination of metal complexes, co-catalyst, and co-initiator was shown to be highly efficient for the ring-opening polymerization of
rac
-LA at room temperature. Influences of metal centers, ligands, and co-catalysts were investigated. Higher Lewis acidity of metal centers and ligands enhanced catalytic activity. Ionic co-catalysts showed increased polymerization rates. Polymerization of
rac
-LA catalyzed by tetraphenylporphyrin aluminum chloride ((TPP)AlCl) and bis(triphenylphosphine)iminium chloride (PPN
+
Cl
−
) in cyclohexene oxide (CHO) as a solvent produced isotactic-enriched polylactide. The order of reactivities based on the metals supported by the TPP ligand is Cr(
iii
) > Al(
iii
) > In(
iii
) > Co(
iii
) while the reactivities of the catalysts supported by Cy-salen ligands are in the order In(
iii
) > Cr(
iii
) > Al(
iii
) > Co(
iii
).
Metal(
iii
) complexes supported by porphyrin and salen ligands were highly efficient for
rac
-lactide polymerization at room temperature giving isotactic-enriched PLA. |
| doi_str_mv | 10.1039/c8dt04699a |
| format | Article |
| fullrecord | <record><control><sourceid>rsc</sourceid><recordid>TN_cdi_rsc_primary_c8dt04699a</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>c8dt04699a</sourcerecordid><originalsourceid>FETCH-rsc_primary_c8dt04699a3</originalsourceid><addsrcrecordid>eNqFj8tKBDEQRcOgMONj416opS5a0-l2xl6LMh_gfiiTil2SR1OJYPv1M4ro0tU9cA8XrlIXrb5pdTfc2ntXdb8eBlyoVdtvNs1guv7ol816qU5KedPaGH1nVkq2_DqGGch7tkypQqSK4eoapizTOAsnwOSgYKAENscp0AcV8FmgjnSwwhxJ-BMr5wTZQxPQVnYE78mRAMaX71mbk-Mvp5ypY4-h0PlPnqrLp8fnh20jxe4m4Ygy7_6OdP_1e5KoTjk</addsrcrecordid><sourcetype>Publisher</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype></control><display><type>article</type><title>Highly efficient metal() porphyrin and salen complexes for the polymerization of -lactide under ambient conditions</title><source>Royal Society Of Chemistry Journals 2008-</source><source>Alma/SFX Local Collection</source><creator>Praban, Siriwan ; Piromjitpong, Parichat ; Balasanthiran, Vagulejan ; Jayaraj, Savithra ; Chisholm, Malcolm H ; Tantirungrotechai, Jonggol ; Phomphrai, Khamphee</creator><creatorcontrib>Praban, Siriwan ; Piromjitpong, Parichat ; Balasanthiran, Vagulejan ; Jayaraj, Savithra ; Chisholm, Malcolm H ; Tantirungrotechai, Jonggol ; Phomphrai, Khamphee</creatorcontrib><description>Ligated metal(
iii
) complexes, Al(
iii
), In(
iii
), Cr(
iii
), and Co(
iii
), containing tetraphenylporphyrin (TPP) and cyclohexylsalen (Cy-salen) ligands were investigated for the polymerization of
rac
-lactide (
rac
-LA). A combination of metal complexes, co-catalyst, and co-initiator was shown to be highly efficient for the ring-opening polymerization of
rac
-LA at room temperature. Influences of metal centers, ligands, and co-catalysts were investigated. Higher Lewis acidity of metal centers and ligands enhanced catalytic activity. Ionic co-catalysts showed increased polymerization rates. Polymerization of
rac
-LA catalyzed by tetraphenylporphyrin aluminum chloride ((TPP)AlCl) and bis(triphenylphosphine)iminium chloride (PPN
+
Cl
−
) in cyclohexene oxide (CHO) as a solvent produced isotactic-enriched polylactide. The order of reactivities based on the metals supported by the TPP ligand is Cr(
iii
) > Al(
iii
) > In(
iii
) > Co(
iii
) while the reactivities of the catalysts supported by Cy-salen ligands are in the order In(
iii
) > Cr(
iii
) > Al(
iii
) > Co(
iii
).
Metal(
iii
) complexes supported by porphyrin and salen ligands were highly efficient for
rac
-lactide polymerization at room temperature giving isotactic-enriched PLA.</description><identifier>ISSN: 1477-9226</identifier><identifier>EISSN: 1477-9234</identifier><identifier>DOI: 10.1039/c8dt04699a</identifier><ispartof>Dalton transactions : an international journal of inorganic chemistry, 2019-03, Vol.48 (1), p.3223-323</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>Praban, Siriwan</creatorcontrib><creatorcontrib>Piromjitpong, Parichat</creatorcontrib><creatorcontrib>Balasanthiran, Vagulejan</creatorcontrib><creatorcontrib>Jayaraj, Savithra</creatorcontrib><creatorcontrib>Chisholm, Malcolm H</creatorcontrib><creatorcontrib>Tantirungrotechai, Jonggol</creatorcontrib><creatorcontrib>Phomphrai, Khamphee</creatorcontrib><title>Highly efficient metal() porphyrin and salen complexes for the polymerization of -lactide under ambient conditions</title><title>Dalton transactions : an international journal of inorganic chemistry</title><description>Ligated metal(
iii
) complexes, Al(
iii
), In(
iii
), Cr(
iii
), and Co(
iii
), containing tetraphenylporphyrin (TPP) and cyclohexylsalen (Cy-salen) ligands were investigated for the polymerization of
rac
-lactide (
rac
-LA). A combination of metal complexes, co-catalyst, and co-initiator was shown to be highly efficient for the ring-opening polymerization of
rac
-LA at room temperature. Influences of metal centers, ligands, and co-catalysts were investigated. Higher Lewis acidity of metal centers and ligands enhanced catalytic activity. Ionic co-catalysts showed increased polymerization rates. Polymerization of
rac
-LA catalyzed by tetraphenylporphyrin aluminum chloride ((TPP)AlCl) and bis(triphenylphosphine)iminium chloride (PPN
+
Cl
−
) in cyclohexene oxide (CHO) as a solvent produced isotactic-enriched polylactide. The order of reactivities based on the metals supported by the TPP ligand is Cr(
iii
) > Al(
iii
) > In(
iii
) > Co(
iii
) while the reactivities of the catalysts supported by Cy-salen ligands are in the order In(
iii
) > Cr(
iii
) > Al(
iii
) > Co(
iii
).
Metal(
iii
) complexes supported by porphyrin and salen ligands were highly efficient for
rac
-lactide polymerization at room temperature giving isotactic-enriched PLA.</description><issn>1477-9226</issn><issn>1477-9234</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><sourceid/><recordid>eNqFj8tKBDEQRcOgMONj416opS5a0-l2xl6LMh_gfiiTil2SR1OJYPv1M4ro0tU9cA8XrlIXrb5pdTfc2ntXdb8eBlyoVdtvNs1guv7ol816qU5KedPaGH1nVkq2_DqGGch7tkypQqSK4eoapizTOAsnwOSgYKAENscp0AcV8FmgjnSwwhxJ-BMr5wTZQxPQVnYE78mRAMaX71mbk-Mvp5ypY4-h0PlPnqrLp8fnh20jxe4m4Ygy7_6OdP_1e5KoTjk</recordid><startdate>20190305</startdate><enddate>20190305</enddate><creator>Praban, Siriwan</creator><creator>Piromjitpong, Parichat</creator><creator>Balasanthiran, Vagulejan</creator><creator>Jayaraj, Savithra</creator><creator>Chisholm, Malcolm H</creator><creator>Tantirungrotechai, Jonggol</creator><creator>Phomphrai, Khamphee</creator><scope/></search><sort><creationdate>20190305</creationdate><title>Highly efficient metal() porphyrin and salen complexes for the polymerization of -lactide under ambient conditions</title><author>Praban, Siriwan ; Piromjitpong, Parichat ; Balasanthiran, Vagulejan ; Jayaraj, Savithra ; Chisholm, Malcolm H ; Tantirungrotechai, Jonggol ; Phomphrai, Khamphee</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-rsc_primary_c8dt04699a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><creationdate>2019</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Praban, Siriwan</creatorcontrib><creatorcontrib>Piromjitpong, Parichat</creatorcontrib><creatorcontrib>Balasanthiran, Vagulejan</creatorcontrib><creatorcontrib>Jayaraj, Savithra</creatorcontrib><creatorcontrib>Chisholm, Malcolm H</creatorcontrib><creatorcontrib>Tantirungrotechai, Jonggol</creatorcontrib><creatorcontrib>Phomphrai, Khamphee</creatorcontrib><jtitle>Dalton transactions : an international journal of inorganic chemistry</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Praban, Siriwan</au><au>Piromjitpong, Parichat</au><au>Balasanthiran, Vagulejan</au><au>Jayaraj, Savithra</au><au>Chisholm, Malcolm H</au><au>Tantirungrotechai, Jonggol</au><au>Phomphrai, Khamphee</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Highly efficient metal() porphyrin and salen complexes for the polymerization of -lactide under ambient conditions</atitle><jtitle>Dalton transactions : an international journal of inorganic chemistry</jtitle><date>2019-03-05</date><risdate>2019</risdate><volume>48</volume><issue>1</issue><spage>3223</spage><epage>323</epage><pages>3223-323</pages><issn>1477-9226</issn><eissn>1477-9234</eissn><abstract>Ligated metal(
iii
) complexes, Al(
iii
), In(
iii
), Cr(
iii
), and Co(
iii
), containing tetraphenylporphyrin (TPP) and cyclohexylsalen (Cy-salen) ligands were investigated for the polymerization of
rac
-lactide (
rac
-LA). A combination of metal complexes, co-catalyst, and co-initiator was shown to be highly efficient for the ring-opening polymerization of
rac
-LA at room temperature. Influences of metal centers, ligands, and co-catalysts were investigated. Higher Lewis acidity of metal centers and ligands enhanced catalytic activity. Ionic co-catalysts showed increased polymerization rates. Polymerization of
rac
-LA catalyzed by tetraphenylporphyrin aluminum chloride ((TPP)AlCl) and bis(triphenylphosphine)iminium chloride (PPN
+
Cl
−
) in cyclohexene oxide (CHO) as a solvent produced isotactic-enriched polylactide. The order of reactivities based on the metals supported by the TPP ligand is Cr(
iii
) > Al(
iii
) > In(
iii
) > Co(
iii
) while the reactivities of the catalysts supported by Cy-salen ligands are in the order In(
iii
) > Cr(
iii
) > Al(
iii
) > Co(
iii
).
Metal(
iii
) complexes supported by porphyrin and salen ligands were highly efficient for
rac
-lactide polymerization at room temperature giving isotactic-enriched PLA.</abstract><doi>10.1039/c8dt04699a</doi><tpages>8</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1477-9226 |
| ispartof | Dalton transactions : an international journal of inorganic chemistry, 2019-03, Vol.48 (1), p.3223-323 |
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| language | |
| recordid | cdi_rsc_primary_c8dt04699a |
| source | Royal Society Of Chemistry Journals 2008-; Alma/SFX Local Collection |
| title | Highly efficient metal() porphyrin and salen complexes for the polymerization of -lactide under ambient conditions |
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