Document Detail


Adaptive organic nanoparticles of a teflon-coated iron (III) porphyrin catalytically activate dioxygen for cyclohexene oxidation.
MedLine Citation:
PMID:  22517679     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Self-organized organic nanoparticles (ONP) are adaptive to the environmental reaction conditions. ONP of fluorous alkyl iron(III) porphyrin catalytically oxidize cyclohexene to the allylic oxidation products. In contrast, the solvated metalloporphyrin yields both allylic oxidation and epoxidation products. The ONP system facilitates a greener reaction because about 89% reaction medium is water, molecular oxygen is used in place of synthetic oxidants, and the ambient reaction conditions used require less energy. The enhanced catalytic activity of these ONP is unexpected because the metalloporphyrins in the nanoaggregates are in the close proximity and the TON should diminish by self-oxidative degradation. The fluorous alkyl chain stabilizes the ONP toward self-oxidative degradation.
Authors:
Amit Aggarwal; Sunaina Singh; Jacopo Samson; Charles Michael Drain
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, U.S. Gov't, Non-P.H.S.     Date:  2012-04-20
Journal Detail:
Title:  Macromolecular rapid communications     Volume:  33     ISSN:  1521-3927     ISO Abbreviation:  Macromol Rapid Commun     Publication Date:  2012 Jul 
Date Detail:
Created Date:  2012-07-18     Completed Date:  2012-11-13     Revised Date:  2014-04-08    
Medline Journal Info:
Nlm Unique ID:  9888239     Medline TA:  Macromol Rapid Commun     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  1220-6     Citation Subset:  IM    
Copyright Information:
Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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MeSH Terms
Descriptor/Qualifier:
Catalysis
Cyclohexenes / chemistry*
Metalloporphyrins / chemistry*
Nanoparticles / chemistry*
Oxidation-Reduction
Oxygen / chemistry*
Polytetrafluoroethylene / chemistry*
Grant Support
ID/Acronym/Agency:
8 G12 MD007599/MD/NIMHD NIH HHS; G12 MD007599/MD/NIMHD NIH HHS; G12 RR003037/RR/NCRR NIH HHS; G12-RR-03037/RR/NCRR NIH HHS
Chemical
Reg. No./Substance:
0/Cyclohexenes; 0/Metalloporphyrins; 12L0P8F7GN/cyclohexene; 9002-84-0/Polytetrafluoroethylene; S88TT14065/Oxygen
Comments/Corrections

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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