Linked Life Data

19286551

Source:http://linkedlifedata.com/resource/pubmed/id/19286551

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5920
pubmed:dateCreated
2009-3-16
pubmed:abstractText
Halogen bonding has increasingly facilitated the assembly of diverse host-guest solids. Here, we show that a well-known class of organic salts, bis(trimethylammonium) alkane diiodides, can reversibly encapsulate alpha,omega-diiodoperfluoroalkanes (DIPFAs) through intermolecular interactions between the host's I- anions and the guest's terminal iodine substituents. The process is highly selective for the fluorocarbon that forms an I-...I(CF2)mI...I- superanion that is matched in length to the chosen dication. DIPFAs that are 2 to 12 carbons in length (common industrial intermediates) can thereby be isolated from mixtures by means of crystallization from solution upon addition of the dissolved size-matched ionic salt. The solid-state salts can also selectively capture the DIPFAs from the vapor phase, yielding the same product formed from solution despite a lack of porosity of the starting lattice structure. Heating liberates the DIPFAs and regenerates the original salt lattice, highlighting the practical potential for the system in separation applications.
pubmed:language
eng
pubmed:journal
pubmed:status
PubMed-not-MEDLINE
pubmed:month
Mar
pubmed:issn
1095-9203
pubmed:author
pubmed:issnType
Electronic
pubmed:day
13
pubmed:volume
323
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1461-4
pubmed:year
2009
pubmed:articleTitle
Nonporous organic solids capable of dynamically resolving mixtures of diiodoperfluoroalkanes.
pubmed:affiliation
Laboratory of Nanostructured Fluorinated Materials, Department of Chemistry, Materials, and Chemical Engineering Giulio Natta, Politecnico di Milano, via L. Mancinelli 7, 20131 Milan, Italy. pierangelo.metrangolo@polimi.it
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't