@article{uyar_gracz_rusa_shin_el-shafei_tonelli_2006, title={Polymerization of styrene in gamma-cyclodextrin channels: Lightly rotaxanated polystyrenes with altered stereosequences}, volume={47}, ISSN={["0032-3861"]}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-33748531256&partnerID=MN8TOARS}, DOI={10.1016/j.polymer.2006.07.054}, abstractNote={Modeling of polystyrene (PS) with various stereosequences in γ-cyclodextrin (γ-CD) channels has been conducted and it was found that only isotactic PS stereoisomers can fit into the γ-CD cavity. Thus, based on the modeling of stereoisomeric polystyrenes in narrow γ-CD channels, it was suggested that PSs with unusual microstructures might be produced via constrained polymerization of styrene monomer in its γ-CD-IC crystals. The in situ polymerization of styrene inside the narrow channels of its γ-CD-IC crystals suspended in aqueous media was performed. Alternatively, the solid-state polymerization of styrene/γ-CD-IC has also been conducted by exposure to γ-radiation. It was found that most host γ-CD molecules slip off during polymerization and the channel structure was not preserved. Consequently, much of the guest styrene monomer polymerizes outside of the host γ-CD channels, where the constrained environment is absent. Yet, a lightly rotaxanated structure has been obtained, where some threaded γ-CD molecules ∼15 wt% (∼1 γ-CD per 70 PS repeat units) are permanently entrapped along the PS chains after polymerization. 13C NMR spectra of PSs synthesized from styrene/γ-CD-IC and homogeneously in toluene show some differences, which are presumably due to variations in the stereosequences of PSs obtained from the partially constrained polymerization of styrene/γ-CD-IC.}, number={20}, journal={POLYMER}, author={Uyar, Tamer and Gracz, Hanna S. and Rusa, Mariana and Shin, I. Daniel and El-Shafei, Ahmed and Tonelli, Alan E.}, year={2006}, month={Sep}, pages={6948–6955} }
 @article{rusa_rusa_peet_uyar_fox_hunt_wang_balik_tonelli_2006, title={The nano-threading of polymers}, volume={55}, ISSN={["1573-1111"]}, DOI={10.1007/s10847-005-9038-1}, number={1-2}, journal={JOURNAL OF INCLUSION PHENOMENA AND MACROCYCLIC CHEMISTRY}, author={Rusa, C. C. and Rusa, M. and Peet, J. and Uyar, T. and Fox, J. and Hunt, M. A. and Wang, X. and Balik, C. M. and Tonelli, A. E.}, year={2006}, month={Jun}, pages={185–192} }
 @article{uyar_rusa_wang_rusa_hacaloglu_tonelli_2005, title={Intimate blending of binary polymer systems from their common cyclodextrin inclusion compounds}, volume={43}, ISSN={["1099-0488"]}, DOI={10.1002/polb.20546}, abstractNote={Abstract}, number={18}, journal={JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS}, author={Uyar, T and Rusa, CC and Wang, XW and Rusa, M and Hacaloglu, J and Tonelli, AE}, year={2005}, month={Sep}, pages={2578–2593} }
 @article{hyde_rusa_hinestroza_2005, title={Layer-by-layer deposition of polyelectrolyte nanlayers on natural fibres: cotton}, volume={16}, ISSN={["1361-6528"]}, DOI={10.1088/0957-4484/16/7/017}, abstractNote={The layer-by-layer (LbL) deposition of poly(sodium 4-styrene sulfonate) (PSS) and poly(allylamine hydrochloride) (PAH) over cotton fibres is reported. Cotton fibres offer unique challenges to the deposition of nanolayers because of their unique cross section as well as the chemical heterogeneity of their surface. Cationic cotton substrates were produced by using 2,3-epoxypropyltrimethylammonium chloride. Attenuated total reflectance FTIR, x-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM) were used to validate the presence of the nanolayers as well as to corroborate their self-organized structure. TEM images indicated conformal and uniform coating of the cotton fibres. XPS spectral data were found to be in quantitative agreement with previous published work that studied the LbL deposition of PSS and PAH over synthetic substrates.}, number={7}, journal={NANOTECHNOLOGY}, author={Hyde, K and Rusa, M and Hinestroza, J}, year={2005}, month={Jul}, pages={S422–S428} }
 @article{rusa_uyar_rusa_hunt_wang_tonelli_2004, title={An intimate polycarbonate/poly(methyl methacrylate)/poly(vinyl acetate) ternary blend via coalescence from their common inclusion compound with gamma-cyclodextrin}, volume={42}, ISSN={["1099-0488"]}, DOI={10.1002/polb.20273}, abstractNote={Abstract}, number={22}, journal={JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS}, author={Rusa, CC and Uyar, T and Rusa, M and Hunt, MA and Wang, XW and Tonelli, AE}, year={2004}, month={Nov}, pages={4182–4194} }
 @article{rusa_whitesell_fox_2004, title={Controlled fabrication of gold/polymer nanocomposites with a highly structured poly(N-acylethylenimine) shell}, volume={37}, ISSN={["1520-5835"]}, DOI={10.1021/ma035008i}, abstractNote={Two families of well-defined organic−inorganic nanocomposites have been synthesized either by attachment of an initiator as a capping self-assembled monolayer on a gold cluster onto which a macromolecule is grown in situ or by preformation of a defined polymer, followed by covalent or adsorptive attachment to a surface-capped metal cluster. The characteristics of these composites are compared in size and local organization. Possessing nanometer-sized gold clusters at the core and poly(N-acylethylenimine) chains radially or tangentially connected to the core, the resulting materials were characterized by TEM, GPC, UV, IR, NMR, and XPS spectroscopies. Larger particles with narrower polydispersity were obtained by in situ growth of the polymer on a preformed metal cluster, with best results being attained with a mixture of brominated and nonbrominated thiols in which steric accessibility to the initiator sites is varied.}, number={8}, journal={MACROMOLECULES}, author={Rusa, M and Whitesell, JK and Fox, MA}, year={2004}, month={Apr}, pages={2766–2774} }
 @article{hernandez_rusa_rusa_lopez_mijangos_tonelli_2004, title={Controlling PVA hydrogels with gamma-cyclodextrin}, volume={37}, ISSN={["0024-9297"]}, DOI={10.1021/ma048375i}, abstractNote={We report on the preparation and characterization of poly(vinyl alcohol) (PVA) hydrogels formed during freeze−thaw (F−T) cycles of their aqueous solutions containing γ-cyclodextrin (γ-CD). Crystalline inclusion compound (IC) formation was observed between PVA and γ-CD in these gels at low concentrations of γ-CD (γ-CD:PVA molar ratios < 1:25). Confirmation of the existence of the channel structure for γ-CD was achieved by characterizing the dried PVA/γ-CD hydrogels with solid-state DSC, TGA, WAXD, and 13C NMR. Some aspects regarding the mechanism and structure of PVA gels obtained via F−T cycles in the presence/absence of γ-CD are presented based on UV−vis, swelling, solution 1H NMR, and rheological observations. It was observed that the swelling and rheological responses of the aqueous PVA gels formed during F−T cycles in the presence of γ-CD can be controlled by adjustment of the PVA:γ-CD molar ratio employed during their gelation.}, number={25}, journal={MACROMOLECULES}, author={Hernandez, R and Rusa, M and Rusa, CC and Lopez, D and Mijangos, C and Tonelli, AE}, year={2004}, month={Dec}, pages={9620–9625} }
 @misc{rusa_wei_bullions_rusa_gomez_porbeni_wang_shin_balik_white_et al._2004, title={Controlling the polymorphic behaviors of semicrystalline polymers with cyclodextrins}, volume={4}, ISSN={["1528-7505"]}, DOI={10.1021/cg049821w}, abstractNote={We present a review of our initial studies concerning the control of polymorphism in semicrystalline polymers with cyclodextrins (CDs). CDs are cyclic starch oligomers with six (α-CD), seven (β-CD), and eight (γ-CD) α-1,4-linked glucose units possessing bracelet structures with hydrophobic and hydrophilic interiors and exteriors, respectively. They are able to act as hosts to form noncovalent inclusion compounds (ICs) with a large variety of guest molecules, including a wide range of high molecular weight guest polymers. In polymer-CD-ICs, the CD host crystalline lattice consists of hexagonally packed CD stacks with guest polymers occupying the narrow channels (∼0.5−1.0 nm) extending down the interiors of the stacked CDs. As a consequence, the included guest polymers must adopt highly extended conformations and are segregated from neighboring guest polymer chains. When the host CDs are appropriately removed from polymer-CD-ICs, the included guest polymers are forced to coalesce into a pure polymer solid, ...}, number={6}, journal={CRYSTAL GROWTH & DESIGN}, author={Rusa, CC and Wei, M and Bullions, TA and Rusa, M and Gomez, MA and Porbeni, FE and Wang, XG and Shin, ID and Balik, CM and White, JL and et al.}, year={2004}, pages={1431–1441} }
 @article{rusa_wei_shuai_bullions_wang_rusa_uyar_tonelli_2004, title={Molecular mixing of incompatible polymers through formation of and coalescence from their common crystalline cyclodextrin inclusion compounds}, volume={42}, ISSN={["1099-0488"]}, DOI={10.1002/polb.20272}, abstractNote={Abstract}, number={23}, journal={JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS}, author={Rusa, CC and Wei, M and Shuai, X and Bullions, TA and Wang, X and Rusa, M and Uyar, T and Tonelli, AE}, year={2004}, month={Dec}, pages={4207–4224} }
 @article{rusa_rusa_gomez_shin_fox_tonelli_2004, title={Nanostructuring high molecular weight isotactic polyolefins via processing with gamma-cyclodextrin inclusion compounds. Formation and characterization of polyolefin-gamma-cyclodextrin inclusion compounds}, volume={37}, ISSN={["1520-5835"]}, DOI={10.1021/ma0489164}, abstractNote={The present paper deals with the formation and detailed characterization of the γ-cyclodextrin (γ-CD) inclusion compounds (ICs) formed with two different high molecular weight isotactic polyolefins, i.e., polypropylene (i-PP) and poly(butene-1) (i-PB). Wide-angle X-ray diffraction (WAXD), differential scanning calorimetry (DSC), solid-state 13C NMR, and FT-infrared (FTIR) observations were used to prove the inclusion of the guest polymer chains into the narrow channels provided by the stacks of the doughnut-shape CD molecules. The main aim of polyolefin inclusion into a solid host lattice like γ-CD is to extend and reorganize their conformations, with the hope of improving their commercial properties following their coalescence from their ICs. In the second part of the paper, both coalesced i-PP and i-PB obtained after the host γ-CD is removed reveal different characteristics as compared with the as-received or corresponding control samples.}, number={21}, journal={MACROMOLECULES}, author={Rusa, CC and Rusa, M and Gomez, M and Shin, ID and Fox, JD and Tonelli, AE}, year={2004}, month={Oct}, pages={7992–7999} }
 @article{uyar_rusa_tonelli_2004, title={Polymerization of styrene in cyclodextrin channels: Can confined free-radical polymerization yield stereoregular polystyrene?}, volume={25}, ISSN={["1521-3927"]}, DOI={10.1002/marc.200400165}, abstractNote={Abstract}, number={15}, journal={MACROMOLECULAR RAPID COMMUNICATIONS}, author={Uyar, T and Rusa, M and Tonelli, AE}, year={2004}, month={Aug}, pages={1382–1386} }
 @article{topchieva_tonelli_panova_matuchina_kalashnikov_gerasimov_rusa_rusa_hunt_2004, title={Two-phase channel structures based on alpha-cyclodextrin-polyethylene glycol inclusion complexes}, volume={20}, ISSN={["0743-7463"]}, DOI={10.1021/la048970d}, abstractNote={Wide-angle X-ray scattering observations of α-cyclodextrin (CD)−poly(ethylene glycol) (PEG) inclusion complexes (ICs) have shown for the first time that two crystalline columnar modifications (forms I and II) are produced in the process of their formation. This was made possible by precise azimuthal X-ray diffraction scanning of oriented IC samples. Form I is characterized by CDs threaded onto PEG chains and arranged along channels in the order head-to-head/tail-to-tail, while form II is formed by unbound CDs also arranged into columns in a head-to-tail and also possibly a head-to-head/tail-to-tail manner, probably as a result of template crystallization on the form I IC crystals. It was shown that similar structural peculiarities are inherent for channel structures based on ICs obtained with PEG with a wide range of molecular weights (MWs). The characteristic feature of ICs based on PEG, especially with MW > 8000, is the presence of unbound polymer in the composition of the complex. The amount of unbound...}, number={21}, journal={LANGMUIR}, author={Topchieva, IN and Tonelli, AE and Panova, IG and Matuchina, EV and Kalashnikov, FA and Gerasimov, VI and Rusa, CC and Rusa, M and Hunt, MA}, year={2004}, month={Oct}, pages={9036–9043} }
 @article{rusa_luca_tonelli_rusa_2002, title={Structural investigations of the poly(epsilon-caprolactam)-urea inclusion compound}, volume={43}, ISSN={["0032-3861"]}, DOI={10.1016/s0032-3861(02)00225-2}, abstractNote={An interesting inclusion compound (IC) between guest poly(ε-caprolactam) (PεCL) and host urea was successfully obtained, for the first time, by co-crystallization from their common solution. X-ray diffraction, infrared spectroscopy and differential scanning calorimetry have been utilized for a detailed structural investigation of PεCL–urea IC (U IC) crystals. The results were compared with those obtained for well-known structures of the hexagonal polyethylene–U IC, the trigonal polyethylene oxide–U IC and the ‘large tetragonal’ poly(propylene)–U IC. The structure of PεCL–U IC reconfirms that the urea host molecules may crystallize, even in the presence of a rather slim polymer guest, into an IC with a lattice channel diameter of more than 5.25 Å.}, number={14}, journal={POLYMER}, author={Rusa, CC and Luca, C and Tonelli, AE and Rusa, M}, year={2002}, month={Jun}, pages={3969–3972} }