@article{frankowski_capracotta_martin_khan_spontak_2007, title={Stability of organically modified montmorillonites and their polystyrene nanocomposites after prolonged thermal treatment}, volume={19}, ISSN={["0897-4756"]}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-34250177310&partnerID=MN8TOARS}, DOI={10.1021/cm061953k}, abstractNote={Melt intercalation of montmorillonite (MMT) into polymeric matrices to improve the mechanical properties of polymers has evolved into a subject of tremendous fundamental and technological interest....}, number={11}, journal={CHEMISTRY OF MATERIALS}, author={Frankowski, David J. and Capracotta, Michael D. and Martin, James D. and Khan, Saad A. and Spontak, Richard J.}, year={2007}, month={May}, pages={2757–2767} }
 @article{capracotta_sullivan_martin_2006, title={Sorptive reconstruction of CuMCl4 (M = Al and Ga) upon small-molecule binding and the competitive binding of CO and ethylene}, volume={128}, ISSN={["1520-5126"]}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-33750078396&partnerID=MN8TOARS}, DOI={10.1021/ja063172q}, abstractNote={Carbonyl adducts to CuMCl(4) (M = Al and Ga) have been characterized by single-crystal and/or powder X-ray diffraction, IR and diffuse reflectance UV/vis spectroscopy. Up to two equivalents of carbon monoxide ( approximately 200 cm(3)/g relative to stp) are sorbed at room temperature, with equilibrium binding pressures of below 0.5 atm of CO. The carbonyl bonding is shown to be nonclassical, implicating the dominance of sigma-bonding and absence of pi-back-bonding. Analysis of the crystalline structures of the parent and adduct phases provides an atomistic picture of the sorptive reconstruction reaction. Comparison of the reactivity of CO and ethylene with these CuMCl(4) materials, as well as other copper(I) halide compounds that exhibit classical and nonclassical modes of bonding, demonstrates the ability to tune the reactivity of the crystalline frameworks with selectivity for carbon monoxide or olefins, respectively.}, number={41}, journal={JOURNAL OF THE AMERICAN CHEMICAL SOCIETY}, author={Capracotta, Michael D. and Sullivan, Roger M. and Martin, James D.}, year={2006}, month={Oct}, pages={13463–13473} }
 @article{yan_capracotta_maggard_2005, title={Structural origin of chirality and properties of a remarkable helically pillared solid}, volume={44}, ISSN={["1520-510X"]}, DOI={10.1021/ic050794o}, abstractNote={A new helically pillared and chiral solid, Cu(pzc)2AgReO4 (I, pzc = pyrazinecarboxylate), was synthesized from hydrothermal reactions at 95-125 degrees C. The structural origin of its chirality, relative to the achiral M(pzc)2(H2O)2AgReO4 (II, M = Co; III, M = Ni) analogues, arises from significantly tilted pillars and hydrogen bonds to the AgReO4 layers. The new pillared structure exhibits second harmonic generation activity, CO2 absorption, thermal stability to approximately 250 degrees C, and Curie-Weiss magnetism expected for isolated Cu2+.}, number={19}, journal={INORGANIC CHEMISTRY}, author={Yan, BB and Capracotta, MD and Maggard, PA}, year={2005}, month={Sep}, pages={6509–6511} }
 @article{patel_aberg_sanchez_capracotta_martin_spontak_2004, title={Morphological, mechanical and gas-transport characteristics of crosslinked poly(propylene glycol): homopolymers, nanocomposites and blends}, volume={45}, ISSN={["1873-2291"]}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-3342879397&partnerID=MN8TOARS}, DOI={10.1016/j.polymer.2004.06.024}, abstractNote={Linear polyethers possess unusually high CO2 solubility and, hence, selectivity due to the presence of accessible ether linkages that can interact with the quadrupolar moment of CO2 molecules. In this work, membranes derived from crosslinked poly(propylene glycol) diacrylate (PPGda) oligomers differing in molecular weight (M), as well as PPGda nanocomposites containing either an organically-modified montmorillonite clay or a methacrylate-terminated fumed silica are investigated and compared with highly CO2-selective poly(ethylene glycol) diacrylate (PEGda) homopolymer and nanocomposite membranes previously reported. The rheological and permeation properties of PPGda depend sensitively on M, with the elastic modulus decreasing, but CO2 permeability and CO2/H2 selectivity increasing, with increasing M. Incorporation of either nanofiller into PPGda enhances the elastic modulus and reduces the gas permeability in the resultant nanocomposites without strongly affecting CO2/H2 selectivity. Blending PPGda and PEGda prior to chemical crosslinking yields binary membranes that exhibit intermediate gas-transport properties accurately described by a linear rule of mixtures.}, number={17}, journal={POLYMER}, author={Patel, NP and Aberg, CM and Sanchez, AM and Capracotta, MD and Martin, JD and Spontak, RJ}, year={2004}, month={Aug}, pages={5941–5950} }
 @article{tang_lu_tian_capracotta_novak_2004, title={Stable helical polyguanidines: Poly{N-(1-anthryl)-N '-[(R)- and/or (S)-3,7-dimethyloctyl]guanidines}}, volume={126}, ISSN={["1520-5126"]}, DOI={10.1021/ja049937g}, abstractNote={Using chiral catalysts of (R)- and/or (S)-BINOL-Ti, the asymmetrical polymerization of achiral monomer, N-(1-anthryl)-N'-n-octadecylcarbodiimide, yielded soluble nonregioregular polyguanidines of Poly-R1 and Poly-S1. A racemization process occurred when the toluene solution of Poly-R1 was annealed at elevated temperatures (70-80 degrees C). Kinetic studies reveal this to be a slow process with an activation energy of ca. 36 kcal/mol. On the other hand, using titanium(IV) trifluoroethoxide catalyst, the polymerization of N-(1-anthryl)-N'-[(R)- and/or (S)-3,7-dimethyloctyl]carbodiimides afforded highly regioregular polyguanidines of Poly-R2 and Poly-S2. These polymers adopt stable helices in various solvents and elevated temperatures, whose kinetically controlled conformations and thermodynamically controlled conformations are essentially the same.}, number={12}, journal={JOURNAL OF THE AMERICAN CHEMICAL SOCIETY}, author={Tang, HZ and Lu, YJ and Tian, GL and Capracotta, MD and Novak, BM}, year={2004}, month={Mar}, pages={3722–3723} }
 @article{singhal_capracotta_martin_khan_fedkiw_2004, title={Transport properties of hectorite based nanocomposite single ion conductors}, volume={128}, ISSN={["0378-7753"]}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-1542333424&partnerID=MN8TOARS}, DOI={10.1016/j.jpowsour.2003.09.064}, abstractNote={The ionic conductivity and rheological properties of clay filled nanocomposite electrolytes are reported. These electrolytes, which have potential use in lithium-ion batteries, consist of lithium-exchanged hectorite, a 2:1 layered smectite clay, dispersed in ethylene carbonate (EC) or a mixture of EC+polyethylene glycol di-methyl ether (PEG-dm, 250 MW). All samples exhibit elastic, gel-like characteristics and room temperature conductivities of order 0.1 mS/cm. A maximum in conductivity is observed at about 25 wt.% clay concentration. A maximum in hectorite basal layer spacing is also observed in the same concentration range, suggesting a direct correlation between conductivity and layer spacing. The elastic modulus and yield stress increase by two orders of magnitude and the conductivity increases by one order of magnitude with increase in hectorite concentration from 5 to 25%, which indicates the significant influence of hectorite content in determining the characteristics of these single-ion conductors. The solvent composition plays a secondary role in this regard, with addition of PEG-dm to the base EC+hectorite electrolyte producing moderate improvement in conductivity. Similarly, the addition of PEG-dm to EC+hectorite affects an increase by only a factor of three in the elastic modulus and yield stress of the electrolyte.}, number={2}, journal={JOURNAL OF POWER SOURCES}, author={Singhal, RG and Capracotta, MD and Martin, JD and Khan, SA and Fedkiw, PS}, year={2004}, month={Apr}, pages={247–255} }