Thixotropic hydrogel derived from a product of an organic solid-state synthesis: properties and densities of metal-organic nanoparticles

Tamara D Hamilton; Dejan-Krešimir Bučar; Jonas Baltrusaitis; Douglas R Flanagan; Yingjian Li; Suman Ghorai; Alexei V Tivanski; Leonard R MacGillivray

doi:10.1021/ja106095w

Journal article

Thixotropic hydrogel derived from a product of an organic solid-state synthesis: properties and densities of metal-organic nanoparticles

Tamara D Hamilton, Dejan-Krešimir Bučar, Jonas Baltrusaitis, Douglas R Flanagan, Yingjian Li, Suman Ghorai, Alexei V Tivanski and Leonard R MacGillivray

Journal of the American Chemical Society, Vol.133(10), pp.3365-3371

03/16/2011

DOI: 10.1021/ja106095w

PMID: 21341662

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Abstract

Metallogels form from Cu(II) ions and tetratopic ligand rctt-1,2-bis(3-pyridyl)-3,4-bis(4-pyridyl)cyclobutane. The tetrapyridyl cyclobutane has been synthesized in the organic solid state. The gel forms with a variety of counteranions and gels water. The hydrogel is thixotropic and is composed of nanoscale metal-organic particles (NMOPs), a high surface area of which likely accounts for the gelation of the polar aqueous medium. A shear stress profile of the thixotropic hydrogel gave a yield value of 8.33 Pa. A novel combination of atomic force microscopy (AFM) and scanning transmission X-ray microscopy (STXM) is used to assess the densities of individual NMOPs. A density of 1.37 g/cm(3) has been determined. A single-crystal X-ray diffraction study demonstrates the ability of the unsymmetrical cyclobutane 3,4'-tpcb to self-assemble with Cu(II) ions in [Cu(2)(hfac)(4)(3,4'-tpcb)](∞) (where hfac is hexafluoroacetylacetonate) to form a solvated 1D coordination polymer.

Microscopy, Electron, Scanning Transmission

Shear Strength

Copper - chemistry

Hydrogel, Polyethylene Glycol Dimethacrylate - chemistry

X-Ray Diffraction

Metal Nanoparticles - chemistry

Microscopy, Atomic Force

Stress, Mechanical

Ligands

Organometallic Compounds - chemistry

Cyclobutanes - chemistry

Details

Title: Subtitle: Thixotropic hydrogel derived from a product of an organic solid-state synthesis: properties and densities of metal-organic nanoparticles
Creators: Tamara D Hamilton - Department of Chemistry, 305 Chemistry Building, College of Pharmacy, University of Iowa, Iowa City, Iowa 52242, United States
Dejan-Krešimir Bučar
Jonas Baltrusaitis
Douglas R Flanagan
Yingjian Li
Suman Ghorai
Alexei V Tivanski
Leonard R MacGillivray
Resource Type: Journal article
Publication Details: Journal of the American Chemical Society, Vol.133(10), pp.3365-3371
Publisher: United States
DOI: 10.1021/ja106095w
PMID: 21341662
ISSN: 0002-7863
eISSN: 1520-5126
Language: English
Date published: 03/16/2011
Academic Unit: Pharmacy; Pharmaceutical Sciences and Experimental Therapeutics; Chemistry
Record Identifier: 9983985885202771

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