@article{dai_guo_deng_deng_yan_spontak_2023, title={Carbon molecular-sieve membranes developed from a Troger's base polymer and possessing superior gas-separation performance}, volume={680}, ISSN={["1873-3123"]}, DOI={10.1016/j.memsci.2023.121731}, abstractNote={Carbon molecular-sieve membranes possess tremendous practical advantages over unary polymer membranes by providing high gas-separation performance levels, coupled with excellent mechanical and chemical stability. Improving their overall effectiveness greatly expands the competitiveness of this class of membranes. In the present study, carbon membranes are fabricated from a Tröger’s base polymer as the precursor. By optimizing the carbonization conditions, the gas-separation performance of the resultant membranes are significantly enhanced. Under optimized conditions, a H2 permeability of up to 1135 Barrer is achieved, with a corresponding H2/CH4 selectivity of 1170 and a CO2/CH4 selectivity of 238. While increasing the operating temperature slightly reduces the selectivity, it still remains in the high-separation region. Overall, the measured separation performance levels for H2-related separations, i.e., H2/CH4, H2/N2 and H2/CO2, all substantially exceed the Robeson upper bound. Moreover, the CO2/CH4 separation efficacy also lies above the 2019 upper bound, indicating that the carbon membranes developed in the present work are versatile and promising for many different gas-separation applications.}, journal={JOURNAL OF MEMBRANE SCIENCE}, author={Dai, Zhongde and Guo, Hongfang and Deng, Jing and Deng, Liyuan and Yan, Jiaqi and Spontak, Richard J.}, year={2023}, month={Aug} }
 @article{yan_lee_smith_spontak_2021, title={Morphological Studies of Solution-Crystallized Thermoplastic Elastomers with Polyethylene Endblocks and a Random-Copolymer Midblock}, volume={9}, ISSN={["1521-3927"]}, DOI={10.1002/marc.202100442}, abstractNote={Abstract}, journal={MACROMOLECULAR RAPID COMMUNICATIONS}, author={Yan, Jiaqi and Lee, Byeongdu and Smith, Steven D. and Spontak, Richard J.}, year={2021}, month={Sep} }
 @article{peddinti_downs_yan_smith_ghiladi_mhetar_tocchetto_griffiths_scholle_spontak_2021, title={Rapid and Repetitive Inactivation of SARS-CoV-2 and Human Coronavirus on Self-Disinfecting Anionic Polymers}, volume={8}, ISSN={["2198-3844"]}, DOI={10.1002/advs.202003503}, abstractNote={Abstract}, number={11}, journal={ADVANCED SCIENCE}, author={Peddinti, Bharadwaja S. T. and Downs, Sierra N. and Yan, Jiaqi and Smith, Steven D. and Ghiladi, Reza A. and Mhetar, Vijay and Tocchetto, Roger and Griffiths, Anthony and Scholle, Frank and Spontak, Richard J.}, year={2021}, month={Jun} }
 @article{dai_zhu_yan_su_gao_zhang_ke_parsons_2020, title={An Advanced Dual-Function MnO2-Fabric Air Filter Combining Catalytic Oxidation of Formaldehyde and High-Efficiency Fine Particulate Matter Removal}, volume={30}, ISSN={["1616-3028"]}, url={https://doi.org/10.1002/adfm.202001488}, DOI={10.1002/adfm.202001488}, abstractNote={Abstract}, number={42}, journal={ADVANCED FUNCTIONAL MATERIALS}, publisher={Wiley}, author={Dai, Zijian and Zhu, Jie and Yan, Jiaqi and Su, Jiafei and Gao, Yunfei and Zhang, Xing and Ke, Qinfei and Parsons, Gregory N.}, year={2020}, month={Oct} }
 @article{dai_lee_shi_wang_barton_zhu_yan_ke_parsons_2020, title={Fabrication of Freestanding Metal Organic Framework Predominant Hollow Fiber Mat and Its Potential Applications in Gas Separation and Catalysis}, url={https://doi.org/10.1039/C9TA11701F}, DOI={10.1039/c9ta11701f}, abstractNote={Freestanding MOF predominant hollow fiber mats are fabricatedviaan oxide-to-MOF conversion approach. The unique hollow fiber mats show promising potential in CO2adsorption, CO2/N2separation, and VOC abatement applications.}, journal={Journal of Materials Chemistry A}, publisher={Royal Society of Chemistry (RSC)}, author={Dai, Zijian and Lee, Dennis and Shi, Kaihang and Wang, Siyao and Barton, Heather F and Zhu, Jie and Yan, Jiaqi and Ke, Qinfei and Parsons, Gregory N}, year={2020} }
 @article{yan_yan_tilly_ko_lee_spontak_2020, title={Ionic Complexation of Endblock-Sulfonated Thermoplastic Elastomers and Their Physical Gels for Improved Thermomechanical Performance}, volume={2}, DOI={10.1016/j.jcis.2020.02.007}, abstractNote={Thermoplastic elastomers (TPEs) composed of nonpolar triblock copolymers constitute a broadly important class of (re)processable network-forming macromolecules employed in ubiquitous commercial applications. Physical gelation of these materials in the presence of a low-volatility oil that is midblock-selective yields tunably soft TPE gels (TPEGs) that are suitable for emergent technologies ranging from electroactive, phase-change and shape-memory responsive media to patternable soft substrates for flexible electronics and microfluidics. Many of the high-volume TPEs used for these purposes possess styrenic endblocks that are inherently limited by a relatively low glass transition temperature. To mitigate this shortcoming, we sulfonate and subsequently complex (and physically crosslink) the endblocks with trivalent Al3+ ions. Doing so reduces the effective hydrophilicity of the sulfonated endblocks, as evidenced by water uptake measurements, while concurrently enhancing the thermomechanical stability of the corresponding TPEGs. Chemical modification results, as well as morphological and property development, are investigated as functions of the degree of sulfonation, complexation and TPEG composition.}, journal={Journal of Colloid and Interface Science}, publisher={Elsevier BV}, author={Yan, Jiaqi and Yan, Shaoyi and Tilly, Joseph C. and Ko, Yeongun and Lee, Byeongdu and Spontak, Richard J.}, year={2020}, month={Feb} }
 @article{tiedemann_yan_barent_spontak_floudas_frey_register_2020, title={Tapered Multiblock Star Copolymers: Synthesis, Selective Hydrogenation, and Properties}, volume={5}, DOI={10.1021/acs.macromol.0c00645}, abstractNote={Two series of well-defined multiblock four-arm tapered star copolymers with “arms” of the type poly(styrene)-block-poly(isoprene-grad-styrene), (SI/S)4, were synthesized on a multigram scale with s...}, journal={Macromolecules}, publisher={American Chemical Society (ACS)}, author={Tiedemann, Philipp and Yan, Jiaqi and Barent, Ramona D. and Spontak, Richard J. and Floudas, George and Frey, Holger and Register, Richard A.}, year={2020}, month={May} }
 @article{deng_dai_yan_sandru_sandru_spontak_deng_2019, title={Facile and solvent-free fabrication of PEG-based membranes with interpenetrating networks for CO2 separation}, volume={570}, ISSN={["1873-3123"]}, DOI={10.1016/j.memsci.2018.10.031}, abstractNote={For nearly two decades, membranes derived from polyethers have served as promising candidate materials for CO2 separation. Due to the inherent tendency of high-molecular-weight poly(ethylene oxide) (PEO) to crystallize and thus reduce its CO2 permeability, prior studies have focused on membranes produced from low-molecular-weight poly(ethylene glycol) (PEG). In this work, a novel series of cross-linked PEG-based membranes composed of interpenetrating polymer networks has been generated through the use of amine-terminated Jeffamine and multiple acrylate-functionalized cross-linkers in a facile, solvent-free, two-stage reaction. Evidence of cross-linked interpenetrating polymer networks formed by aza-Michael addition and acrylate polymerization is confirmed by real-time fourier-transform infrared spectroscopy. In addition, we systematically investigate the thermal stability, mechanical properties and water sorption of these multicomponent membranes. Corresponding CO2 and N2 transport properties, evaluated by single-gas permeation tests, are found to depend on both the chemical nature of the cross-linkers and the ratio of the interpenetrating networks. Moreover, free PEG dimethyl ether has been added into the optimized cross-linked matrix at different loading levels to further enhance gas-transport properties.}, journal={JOURNAL OF MEMBRANE SCIENCE}, publisher={Elsevier BV}, author={Deng, Jing and Dai, Zhongde and Yan, Jiaqi and Sandru, Marius and Sandru, Eugenia and Spontak, Richard J. and Deng, Liyuan}, year={2019}, month={Jan}, pages={455–463} }
 @article{dai_deng_aboukeila_yan_ansaloni_mineart_baschetti_spontak_deng_2019, title={Highly CO2-permeable membranes derived from a midblock-sulfonated multiblock polymer after submersion in water}, volume={11}, DOI={10.1038/s41427-019-0155-5}, abstractNote={Abstract}, number={1}, journal={NPG Asia Materials}, publisher={Springer Science and Business Media LLC}, author={Dai, Zhongde and Deng, Jing and Aboukeila, Hesham and Yan, Jiaqi and Ansaloni, Luca and Mineart, Kenneth P. and Baschetti, Marco Giacinti and Spontak, Richard J. and Deng, Liyuan}, year={2019}, month={Oct} }
 @article{yan_spontak_2019, title={Toughening Poly(lactic acid) with Thermoplastic Elastomers Modified by Thiol–ene Click Chemistry}, volume={7}, DOI={10.1021/acssuschemeng.9b01657}, abstractNote={Due primarily to the inherent brittleness of poly(lactic acid) (PLA), numerous studies have sought to improve the mechanical properties (e.g., fracture toughness) of PLA for a wide range of contemporary applications. In this study, we report a facile method by which to prepare esterified poly[styrene-b-(ethylene-alt-propylene)-b-styrene] (eSEPS) as a toughening agent for PLA through the use of thiol–ene click chemistry. The effects of adding 1 to 30 wt % eSEPS on the thermomechanical properties and morphological characteristics of PLA/eSEPS blends have been systematically investigated. Since eSEPS copolymers are more thermodynamically compatible with PLA than their parent partially hydrogenated SIS copolymer, we find a measurable reduction in the thermal properties of PLA from thermal calorimetry and enhanced dispersion of eSEPS within the PLA matrix according to electron microscopy. Considerable boosts in mechanical properties such as toughness (∼60 MJ/m3) and elongation at break (∼470%) are about 16× an...}, number={12}, journal={ACS Sustainable Chemistry & Engineering}, publisher={American Chemical Society (ACS)}, author={Yan, Jiaqi and Spontak, Richard J.}, year={2019}, month={May}, pages={10830–10839} }
 @article{deng_yan_tilly_deng_mineart_spontak_2018, title={Incorporation of Metallic Species into Midblock-Sulfonated Block Ionomers}, volume={39}, ISSN={["1521-3927"]}, DOI={10.1002/marc.201800427}, abstractNote={Abstract}, number={22}, journal={MACROMOLECULAR RAPID COMMUNICATIONS}, publisher={Wiley}, author={Deng, Jing and Yan, Jiaqi and Tilly, Joseph C. and Deng, Liyuan and Mineart, Kenneth P. and Spontak, Richard J.}, year={2018}, month={Nov} }