{"id":"https://openalex.org/W2005491872","doi":"https://doi.org/10.1021/ma010496k","title":"Novel [Sm2I(NPPh3)5(DME)] Initiator for the Living Ring-Opening Polymerization of \u03b5-Caprolactone and \u03b4-Valerolactone","display_name":"Novel [Sm2I(NPPh3)5(DME)] Initiator for the Living Ring-Opening Polymerization of \u03b5-Caprolactone and \u03b4-Valerolactone","publication_year":2001,"publication_date":"2001-11-08","ids":{"openalex":"https://openalex.org/W2005491872","doi":"https://doi.org/10.1021/ma010496k","mag":"2005491872"},"language":"en","primary_location":{"id":"doi:10.1021/ma010496k","doi":"https://doi.org/10.1021/ma010496k","is_oa":false,"landing_page_url":"https://doi.org/10.1021/ma010496k","pdf_url":null,"source":{"id":"https://openalex.org/S177196338","display_name":"Macromolecules","issn_l":"0024-9297","issn":["0024-9297","1520-5835"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-a","jufo-3","ki-jl-1","norway-2","poland-140","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320006","host_organization_name":"American Chemical Society","host_organization_lineage":["https://openalex.org/P4310320006"],"host_organization_lineage_names":["American Chemical Society"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Macromolecules","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5103333401","display_name":"Palaniswamy Ravi","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I161103922","display_name":"Philipps University of Marburg","ror":"https://ror.org/01rdrb571","country_code":"DE","type":"education","lineage":["https://openalex.org/I161103922"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Palaniswamy Ravi","raw_affiliation_strings":["Philipps-Universit\u00e4t Marburg, Fachbereich Chemie, Hans-Meerwein-Str., D-35032 Marburg, Germany"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Philipps-Universit\u00e4t Marburg, Fachbereich Chemie, Hans-Meerwein-Str., D-35032 Marburg, Germany","institution_ids":["https://openalex.org/I161103922"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5004780711","display_name":"Thorsten Gr\u00f6b","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I161103922","display_name":"Philipps University of Marburg","ror":"https://ror.org/01rdrb571","country_code":"DE","type":"education","lineage":["https://openalex.org/I161103922"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Thorsten Gr\u00f6b","raw_affiliation_strings":["Philipps-Universit\u00e4t Marburg, Fachbereich Chemie, Hans-Meerwein-Str., D-35032 Marburg, Germany"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Philipps-Universit\u00e4t Marburg, Fachbereich Chemie, Hans-Meerwein-Str., D-35032 Marburg, Germany","institution_ids":["https://openalex.org/I161103922"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5038113350","display_name":"Kurt Dehnicke","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I161103922","display_name":"Philipps University of Marburg","ror":"https://ror.org/01rdrb571","country_code":"DE","type":"education","lineage":["https://openalex.org/I161103922"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Kurt Dehnicke","raw_affiliation_strings":["Philipps-Universit\u00e4t Marburg, Fachbereich Chemie, Hans-Meerwein-Str., D-35032 Marburg, Germany"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Philipps-Universit\u00e4t Marburg, Fachbereich Chemie, Hans-Meerwein-Str., D-35032 Marburg, Germany","institution_ids":["https://openalex.org/I161103922"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5087261256","display_name":"Andreas Greiner","orcid":"https://orcid.org/0000-0002-5310-3850","observed_orcids":["https://orcid.org/0000-0002-5310-3850"]},"institutions":[{"id":"https://openalex.org/I161103922","display_name":"Philipps University of Marburg","ror":"https://ror.org/01rdrb571","country_code":"DE","type":"education","lineage":["https://openalex.org/I161103922"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Andreas Greiner","raw_affiliation_strings":["Philipps-Universit\u00e4t Marburg, Fachbereich Chemie, Hans-Meerwein-Str., D-35032 Marburg, Germany"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Philipps-Universit\u00e4t Marburg, Fachbereich Chemie, Hans-Meerwein-Str., D-35032 Marburg, Germany","institution_ids":["https://openalex.org/I161103922"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I161103922"],"apc_list":{"value":4500,"currency":"USD","value_usd":4500},"apc_paid":null,"fwci":2.0255,"has_fulltext":false,"cited_by_count":32,"citation_normalized_percentile":{"value":0.84345479,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":88,"max":98},"biblio":{"volume":"34","issue":"25","first_page":"8649","last_page":"8653"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10661","display_name":"biodegradable polymer synthesis and properties","score":0.9990000128746033,"subfield":{"id":"https://openalex.org/subfields/2502","display_name":"Biomaterials"},"field":{"id":"https://openalex.org/fields/25","display_name":"Materials Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10661","display_name":"biodegradable polymer synthesis and properties","score":0.9990000128746033,"subfield":{"id":"https://openalex.org/subfields/2502","display_name":"Biomaterials"},"field":{"id":"https://openalex.org/fields/25","display_name":"Materials Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10405","display_name":"Advanced Polymer Synthesis and Characterization","score":0.0003000000142492354,"subfield":{"id":"https://openalex.org/subfields/1605","display_name":"Organic Chemistry"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10092","display_name":"Organometallic Complex Synthesis and Catalysis","score":9.999999747378752e-05,"subfield":{"id":"https://openalex.org/subfields/1605","display_name":"Organic Chemistry"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/living-ring-opening-polymerization","display_name":"living ring-opening polymerization","score":0.9549999833106995},{"id":"https://openalex.org/keywords/epsilon-caprolactone","display_name":"\u03b5-caprolactone","score":0.9800000190734863},{"id":"https://openalex.org/keywords/delta-valerolactone","display_name":"\u03b4-valerolactone","score":1.0},{"id":"https://openalex.org/keywords/living-polymerization","display_name":"living polymerization","score":0.44200000166893005},{"id":"https://openalex.org/keywords/polydispersity","display_name":"polydispersity","score":0.8960000276565552},{"id":"https://openalex.org/keywords/copolymerization","display_name":"copolymerization","score":0.718999981880188},{"id":"https://openalex.org/keywords/block-copolymers","display_name":"block copolymers","score":0.9940000176429749},{"id":"https://openalex.org/keywords/toluene","display_name":"toluene","score":0.48399999737739563}],"concepts":[{"id":"https://openalex.org/C15920480","wikidata":"https://www.wikidata.org/wiki/Q421281","display_name":"Copolymer","level":3,"score":0.7867310047149658},{"id":"https://openalex.org/C44228677","wikidata":"https://www.wikidata.org/wiki/Q181898","display_name":"Polymerization","level":3,"score":0.7740499377250671},{"id":"https://openalex.org/C188027245","wikidata":"https://www.wikidata.org/wiki/Q750446","display_name":"Polymer chemistry","level":1,"score":0.7553226947784424},{"id":"https://openalex.org/C11432220","wikidata":"https://www.wikidata.org/wiki/Q1975334","display_name":"Dispersity","level":2,"score":0.699400007724762},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.6584779620170593},{"id":"https://openalex.org/C203897987","wikidata":"https://www.wikidata.org/wiki/Q900770","display_name":"Ring-opening polymerization","level":4,"score":0.6369359493255615},{"id":"https://openalex.org/C2781111393","wikidata":"https://www.wikidata.org/wiki/Q288104","display_name":"Caprolactone","level":4,"score":0.6244435906410217},{"id":"https://openalex.org/C48396125","wikidata":"https://www.wikidata.org/wiki/Q903447","display_name":"Living polymerization","level":5,"score":0.548392653465271},{"id":"https://openalex.org/C2778142098","wikidata":"https://www.wikidata.org/wiki/Q15779","display_name":"Toluene","level":2,"score":0.5451769232749939},{"id":"https://openalex.org/C521977710","wikidata":"https://www.wikidata.org/wiki/Q81163","display_name":"Polymer","level":2,"score":0.5354381203651428},{"id":"https://openalex.org/C53856295","wikidata":"https://www.wikidata.org/wiki/Q6137196","display_name":"Bulk polymerization","level":5,"score":0.43480953574180603},{"id":"https://openalex.org/C121120078","wikidata":"https://www.wikidata.org/wiki/Q3737603","display_name":"Chain transfer","level":5,"score":0.43015390634536743},{"id":"https://openalex.org/C151286553","wikidata":"https://www.wikidata.org/wiki/Q6081822","display_name":"Anionic addition polymerization","level":4,"score":0.4255264401435852},{"id":"https://openalex.org/C111998727","wikidata":"https://www.wikidata.org/wiki/Q2620998","display_name":"Radical polymerization","level":4,"score":0.2735823392868042},{"id":"https://openalex.org/C178790620","wikidata":"https://www.wikidata.org/wiki/Q11351","display_name":"Organic chemistry","level":1,"score":0.1462096869945526}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1021/ma010496k","doi":"https://doi.org/10.1021/ma010496k","is_oa":false,"landing_page_url":"https://doi.org/10.1021/ma010496k","pdf_url":null,"source":{"id":"https://openalex.org/S177196338","display_name":"Macromolecules","issn_l":"0024-9297","issn":["0024-9297","1520-5835"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-a","jufo-3","ki-jl-1","norway-2","poland-140","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320006","host_organization_name":"American Chemical Society","host_organization_lineage":["https://openalex.org/P4310320006"],"host_organization_lineage_names":["American Chemical Society"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Macromolecules","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":19,"referenced_works":["https://openalex.org/W1968855607","https://openalex.org/W1975782463","https://openalex.org/W1986150757","https://openalex.org/W1989234512","https://openalex.org/W2010755146","https://openalex.org/W2013478910","https://openalex.org/W2018667560","https://openalex.org/W2021246455","https://openalex.org/W2021753261","https://openalex.org/W2022747685","https://openalex.org/W2031898019","https://openalex.org/W2048244815","https://openalex.org/W2051335362","https://openalex.org/W2052664824","https://openalex.org/W2078174171","https://openalex.org/W2139295359","https://openalex.org/W2151178966","https://openalex.org/W2167341482","https://openalex.org/W2494852877"],"related_works":["https://openalex.org/W2086141186","https://openalex.org/W2019377970","https://openalex.org/W2056919891","https://openalex.org/W2010755146","https://openalex.org/W2022747685","https://openalex.org/W2038082597","https://openalex.org/W2147516541","https://openalex.org/W2113197530","https://openalex.org/W2020034731","https://openalex.org/W2084544179"],"abstract_inverted_index":{"Ring-opening":[0],"polymerization":[1,76],"of":[2,25,61,64,75,93],"\u03b5-caprolactone":[3],"(CL)":[4],"and":[5,70,77,95],"\u03b4-valerolactone":[6],"(VL)":[7],"was":[8],"carried":[9],"out":[10],"using":[11],"the":[12,23,35,73,80],"initiator":[13],"system":[14],"[Sm":[15],"2":[16],"I(NPPh":[17],"3":[18],")":[19],"5":[20],"(DME)]":[21],"in":[22,31,98],"presence":[24],"toluene.":[26],"Experimental":[27],"molecular":[28,37],"weights":[29,38],"were":[30],"good":[32],"agreement":[33],"with":[34],"theoretical":[36],"for":[39],"[CL]":[40],"0":[41,45],"/[":[42],"1":[43],"]":[44],"up":[46],"to":[47],"350.":[48],"Polydispersities":[49],"are":[50],"low":[51],"at":[52,57],"0\u221220":[53],"\u00b0C":[54],"but":[55],"increase":[56],"higher":[58],"temperatures.":[59],"Addition":[60],"small":[62],"amounts":[63],"coordinating":[65],"solvents":[66],"such":[67],"as":[68],"THF":[69],"DME":[71],"decreased":[72],"rate":[74],"thereby":[78],"reduced":[79],"polydispersity.":[81],"The":[82],"active":[83],"polymer":[84],"chain":[85],"ends":[86],"have":[87],"been":[88],"shown":[89],"by":[90],"sequential":[91],"copolymerization":[92],"CL":[94],"VL,":[96],"resulting":[97],"block":[99],"copolymers.":[100]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2021,"cited_by_count":1},{"year":2020,"cited_by_count":1},{"year":2019,"cited_by_count":1},{"year":2015,"cited_by_count":1},{"year":2013,"cited_by_count":3},{"year":2012,"cited_by_count":4}],"updated_date":"2026-09-22T06:50:58.402377","created_date":"2016-06-24T00:00:00"}