<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Hamilton, Tamara D.</style></author><author><style face="normal" font="default" size="100%">Bucar, Dejan-Kresimir</style></author><author><style face="normal" font="default" size="100%">Baltrusaitis, Jonas</style></author><author><style face="normal" font="default" size="100%">Flanagan, Douglas R.</style></author><author><style face="normal" font="default" size="100%">Li, Yingjian</style></author><author><style face="normal" font="default" size="100%">Ghorai, Suman</style></author><author><style face="normal" font="default" size="100%">Tivanski, Alexei V.</style></author><author><style face="normal" font="default" size="100%">MacGillivray, Leonard R.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Thixotropic Hydrogel Derived from a Product of an Organic Solid-State Synthesis: Properties and Densities of Metal-Organic Nanoparticles.</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of the American Chemical Society</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">nanoparticle hydrogel thixotropy copper coordination polymer crystal</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2011</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2011///</style></date></pub-dates></dates><publisher><style face="normal" font="default" size="100%">American Chemical Society</style></publisher><volume><style face="normal" font="default" size="100%">133</style></volume><pages><style face="normal" font="default" size="100%">3365 - 3371</style></pages><isbn><style face="normal" font="default" size="100%">0002-7863</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Metallogels form from Cu(II) ions and tetratopic ligand rctt-1,2-bis(3-pyridyl)-3,4-bis(4-pyridyl)cyclobutane.  The tetrapyridyl cyclobutane was synthesized in the org. solid state.  The gel forms with a variety of counteranions and gels water.  The hydrogel is thixotropic and is composed of nanoscale metal-org. particles (NMOPs), a high surface area of which likely accounts for the gelation of the polar aq. medium.  A shear stress profile of the thixotropic hydrogel gave a yield value of 8.33 Pa.  A novel combination of at. force microscopy (AFM) and scanning transmission x-ray microscopy (STXM) is used to assess the densities of individual NMOPs.  A d. of 1.37 g/cm3 was detd.  A single-crystal x-ray diffraction study demonstrates the ability of the unsym. cyclobutane 3,4'-tpcb to self-assemble with Cu(II) ions in [Cu2(hfac)4(3,4'-tpcb)]∞ (hfac is hexafluoroacetylacetonate) to form a solvated 1-dimensional coordination polymer. [on SciFinder(R)]</style></abstract><issue><style face="normal" font="default" size="100%">10</style></issue><notes><style face="normal" font="default" size="100%">CAPLUS AN 2011:232592(Journal; Online Computer File)</style></notes></record></records></xml>