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(† equally contributed)

[2024]

81. J. H. Jo, K. J. Kim, E. J. An, J. Lee, H. Jae, D. Roh*, W. S. Chi*, Ionic Crosslinked MOF-Polymer Mixed-Matrix Membranes for Suppressing Interfacial Defects and Plasticization Behavior, ACS Appl. Mater. Interfaces, 2024, just accepted. (Featured as Cover)

80. S. Y. Jeong†, K. J. Kim†, J. Park, J. W. Kim, J. H. Jo, S. Park*, W. S. Chi*, H. Kim*, Functional Bisphenol-Based Additive for Controlled Gas Transport and Suppressed Plasticization of Polyimide Membranes, ACS Appl. Polym. Mater., 2024, 6, 1495-1502.

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[2023]

79. S. J. An†, J. E. Kim†, S. Yu, K. J. Kim, M. Kim, J. H. Kim, J. H. Lee*, W. S. Chi*, Ionic Triptycene Additive-Blended Poly(2,6-dimethyl-1,4-phenylene oxide)-Based Anion Exchange Membranes for Water Electrolyzers, ACS Appl. Energy Mater., 2023, 6, 8929-8940. (Featured as Cover)

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78. K. J. Kim, J. H. Jo, S. J. An, S. Yu, Y. S. Kim, S. Park*, W. S. Chi*, Facile metal-ion infiltration into polyimide membranes with coordination crosslinking for efficient gas separation, Sep. Purif. Technol., 2023, 323, 124330.

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77. J. W. Kim†, J. H. Jo†, S. Jeong, W. S. Chi*, H. Kim*, Covalent and non-covalent approaches to suppress plasticization of polymer membranes for gas separation, Chem. Commun., 2023, 59, 6987-7003. (Featured as Cover)

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76. S.-D. Yun†, C. O. Lee†, H.-W. Kim, S. J. An, S. Kim, M.-J. Seo, C. Park, C.-H. Yun*, W. S. Chi*, S.-J. Yeom*, Exploring a new biocatalyst from Bacillus thuringiensis JNU01 for polyethylene biodegradation, Environ. Sci. Technol. Lett., 2023,10, 485-492. (Featured as Cover)

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75. G. Y. Ryu, H. Jae, K. J. Kim, H. Kim, S. Lee, Y. Jeon*, D. Roh*, W. S. Chi*, Hollow Heteropoly Acid-functionalized ZIF Composite Membrane for Proton Exchange Membrane Fuel CellsACS Appl. Energy Mater., 2023, 8, 4283. (Featured as Cover)

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74. S. Yu, S. J. An, K. J. Kim, J. H. Lee*, W. S. Chi*, High-Loading Poly(ethylene glycol)-Blended Poly(acrylic acid) Membranes for CO2 Separation, ACS Omega, 2023, 8, 2119-2127.

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73. J. Park†, C. O. Lee†, K. J. Kim, W. S. Chi*, H. Kim*, Tailoring 6FDA-based click cross-linked membranes: modular synthesis and tunable gas separation, Mol. Syst. Des. Eng., 2023, 8, 32-38.

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72. K. J. Kim, Y. Chae, S. J. An, J. H. Jo, S. Park*, W. S. Chi*, Microphase-separated morphology controlled polyimide graft copolymer membranes for CO2 separation, Sep. Purif. Technol., 2023, 304, 122315.

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[2022]

71. G. Y. Ryu, S. J. An, S. Yu, K. J. Kim, H. Jae, D. Roh*, W. S. Chi*, Dual-sulfonated MOF/Polysulfone Composite Membranes Boosting Performance for Proton Exchange Membrane Fuel Cells, Eur. Polym. J., 2022, 180, 111601.

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70. H. Lee, W. S. Chi, M. J. Lee, K. Zhang, F. Edhaim, K. M. Rodriquez, S. DeWitt, Z. P. Smith*, Network-Nanostructured ZIF-8 to Enable Percolation for Enhanced Gas Transport, Adv. Funct. Mater., 2022, 32, 2207775.

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69. J. H. Jo, C. O. Lee, G. Y. Ryu, H. Jae, D. Roh*, W. S. Chi*, Hierarchical Amine-Functionalized ZIF-8 Mixed-Matrix Membranes with an Engineered Interface and Transport Pathway for Efficient Gas Separation, ACS Appl. Polym. Mater., 2022, 4, 6426-6439. (Featured as Cover)

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68. C. O. Lee, J. H. Jo, G. Y. Ryu, H. Jae, D. Roh*, W. S. Chi*, SEBS-ionic liquid block-graft copolymer-based membranes with high compatibility for improved gas separation, Eur. Polym. J., 2022, 174, 111309.

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67. J. Park†, C. O. Lee†, J. W. Kim, J. H. Jo, W. S. Chi*, H. Kim*, Poly(benzyl ether)-type additive to engineer glassy polyimide membranes for enhanced gas separations, Chem. Commun., 2022, 58, 4364-4367.

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[2021]

66. S. J. An, K. J. Kim, S. Yu, G. Y. Ryu, W. S. Chi*, A Review on Development of PPO-based Anion Exchange Membranes, Membr. J., 2021, 31, 371-383.

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65. S-S. Park, N-Y. Shin, C. Lee, Y. Jeon*, W. S. Chi*, Y.-G. Shul*, Au Coated Printed Circuit Board Current Collectors using a Pulse Electroplating Method for Fuel Cell Applications, Energies, 2021, 14, 4960.

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64. H.-W. Kim†, J. H. Jo†, Y.-B. Kim†, T.-K. Kim, C.-H. Yun*, W. S. Chi*, S.-J. Yeom*, Biodegradation of Polystyrene by Bacteria from the Soil in Common Environments, J. Hazard. Mater., 2021, 416, 126239.

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63. E. Song, J. Moon, J. W. Lee, C. O. Lee, W. S. Chi*, J. T. Park*, High-Voltage Solar Energy Conversion Based on ZIF-67-Derived Binary Redox-Quasi-Solid-State Electrolyte, J. Electroanal. Chem., 2021, 893, 115264.

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62. J. A. Chae, S. Jeong, H. J. Kim, T. Tojo, Y. Oh, W. S. Chi, H. Yoon, H. Kim*, Fibrous mesoporous polymer monoliths: macromolecular design and enhanced photocatalytic degradation of aromatic dyes, Polym. Chem, 2021, 12, 2464-2470.

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61. J. M. Lim, J. Moon, J. H. Kim, C. O. Lee, W. S. Chi* J. T. Park*, One-Dimensional SnO2 Nanotube Solid-State Electrolyte for Fast Electron Transport and High Light Harvesting in Solar Energy Conversion, Solid State Ion., 2021, 363, 115584.

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60. D. K. Roh*, H. Jae, H. Mun, J. H. Jo, W. S. Chi*, Precise Tuning of Morphology and Pore Size of Amine-Functionalized MIL Metal-Organic Frameworks Using a Directing Agent, Mater. Sci. Eng. B-Adv, 2021, 263, 114833.

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59. J. Y. Lee, G. H. Choi, J. Moon, W. S. Chi*, J. T. Park*, 1D Co4S3 Nanoneedle Array with Mesoporous Carbon Derived from Double Comb Copolymer as an Efficient Solar Conversion Catalyst, Appl. Surf. Sci., 2021, 535, 147637.

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[2020]

58. J. H. Jo, W. S. Chi*, Review on Membrane Materials to Improve Plasticization Resistance for Gas Separations, Membr. J., 2020, 30, 385-394.

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57. Y. E. Kim, U. C. Baek, J. H. Kim, W. S. Chi*, J. T. Park*, Harnessing SnO2 Nanotube Light Scattering Cluster to Improve Energy Conversion Efficiency Assisted by High Reflectance, Mater. Chem. Phys., 2020, 254, 123538.

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56. K. M. Rodriguez, A. X. Wu, Q. Qian, G. Han, S. Lee, F. M. Benedetti, H. Lee, W. S. Chi, C. Doherty, Z. P. Smith*, Facile and time-efficient carboxylic acid functionalization of PIM-1: effect on molecular packing and gas separation performance, Macromolecules, 2020, 53, 6220-6234.

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55. Q. Qian, P. A. Asinger, M. Lee, G. Han, K. M. Rodriquez, S. Lin, F. M. Benedetti, A. X. Wu, W. S. Chi, Z. P. Smith*, MOF-Based Membranes for Gas Separations, Chem. Rev., 2020, 120, 8161-8266.

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54. Q. Qian, W. S. Chi, G. Han, Z. P. Smith*, Impact of Post-Synthetic Modification Routes on Filler Structure and Performance in Metal-Organic Framework Based Mixed-matrix Membranes, Ind. Eng. Chem. Res., 2020, 59, 5432-5438.

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[2019]

53. Q. Qian, A. Wu, W. S. Chi, P. Asinger, S. Lin, A. Hypsher, Z. P. Smith*, Mixed-matrix membranes formed from imide-functionalized UiO-66-NH2 for improved interfacial compatibility, Appl. Mater. Interfaces, 2019, 11, 31257-31269.

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52. W. S. Chi, B. Sundell, K. Zhang, D. Harrigan, S. C. Hayden, Z. P. Smith*, Mixed Matrix Membranes Formed from Multi-Dimensional Metal-Organic Frameworks for Enhanced Gas Transport and Plasticization Resistance, ChemSusChem, 2019, 12, 2355-2360.

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51. Y. Jeon†, W. S. Chi†, J. Hwang, D. H. Kim, J. H. Kim*, Y.-G. Shul*, Core-shell nanostructured heteropoly acid-functionalized metal-organic frameworks: Bifunctional heterogeneous catalyst for efficient biodisel production, Appl. Catal., B, 2019, 242, 51-59.

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[2018]

50. W. S. Chi, D. H. Kim, C. S. Lee, J. T. Park, J. H. Kim*, Highly catalytic and reflective dual-phase nickel sulfide electrodes for solar energy conversion, Appl. Surf. Sci., 2018, 457, 1151-1157.

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49. C. Noh†, C. S. Lee†, W. S. Chi, Y. Chung, J. H. Kim*, Y. Kwon*, Vanadium Redox Flow Battery Using Electrocatalyst Decorated with Nitrogen-Doped Carbon Nanotubes Derived from Metal-Organic Frameworks, J. Electrochem. Soc., 2018, 165, A1388-A1399.

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[2017]

48. W. S. Chi, C. S. Lee, H. Long, M. H. Oh, A. Zettl, C. Carraro, J. H. Kim, R. Maboudian*, Direct Organization of Morphology-Controllable Mesoporous SnO2 using Amphiphilic Graft Copolymer for Gas Sensing Application, ACS Appl. Mater. Interfaces, 2017, 9, 37246-37253.

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47. M. Galizia, W. S. Chi, Z. P. Smith, T. C. Merkel, R. W. Baker, B. D. Freeman*, Polymers and Mixed Matrix Membranes for Gas and Vapor Separation: A review and Prospective Opportunities, Macromolecules, 2017, 50, 7809-7843.

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46. H. Shin†, W. S. Chi†, S. Bae, J. H. Kim*, J. Kim*, High-performance thin PVC-POEM/ZIF-8 mixed matrix membranes on alumina supports for CO2/CH4 separation, J. Ind. Eng. Chem., 2017, 53, 127-133.

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[2016]

45. H. Long, A. Harley-Trochimczyk, S. Cheng, H. Hu, W. S. Chi, A. Rao, C. Carraro, T. Shi, Z. Tang, R. Maboudian*, Nanowire-Assembled Hierarchical ZnCo2O4 Microstructure Integrated with Low Power Microheater for Highly Sensitive Formaldehyde Detection, ACS Appl. Mater. Interfaces, 2016, 8, 31764-31771.

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44. H. J. Hwang†, W. S. Chi†, O. C. Kwon, J. G. Lee, J. H. Kim*, Y.-G. Shul*, Selective Ion Transporting Polymerized Ionic Liquid Membrane Separator for Enhancing Cycle Stability and Durability in Secondary Zinc–Air Battery Systems, ACS Appl. Mater. Interfaces, 2016, 8, 26298-26308.

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43. S. J. Kim, W. S. Chi, H. Jeon, J. H. Kim*, R. Patel*, Spontaneously self-assembled dual-layer mixed matrix membranes containing mass-produced mesoporous TiO2 for CO2 capture, J. Membr. Sci., 2016, 508, 62-72.

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[2015]

42. W. S. Chi, S. Hwang, S.-J. Lee, S. Park, Y.-S. Bae, D. Y. Ryu, J. H. Kim*, J. Kim*, Mixed matrix membranes consisting of SEBS block copolymers and size-controlled ZIF-8 nanoparticles for CO2 capture, J. Membr. Sci., 2015, 495, 479-488.

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41. W. S. Chi†, D. K. Roh†, C. S. Lee, J. H. Kim*, A shape- and morphology-controlled metal organic framework template for high-efficiency solid-state dye-sensitized solar cells, J. Mater. Chem. A., 2015, 3, 21599-21608.

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40. C. S. Lee, J. Y. Lim, W. S. Chi, J. H. Kim*, Facile, Nonhydrothermal, Mass-Producible Synthesis of Mesoporous TiO2 Spheres for Dye-Sensitized Solar Cells, Electrochim. Acta, 2015, 33, 265-274.

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39. S. H. Ahn, D. J. Kim, W. S. Chi, J. H. Kim*, Plasmonic, interior-decorated, one-dimensional hierarchical nanotubes for high-efficiency, solid-state, dye-sensitized solar cells, J. Mater. Chem. A., 2015, 3, 10439-10447.

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38. S. Hwang†, W. S. Chi†, S. J. Lee, S. H. Im, J. H. Kim*, J. Kim*, Hollow ZIF-8 nanoparticles improve the permeability of mixed matrix membranes for CO2/CH4 gas separation, J. Membr. Sci., 2015, 480, 11-19.

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37. W. S. Chi, S. J. Kim, S.-J. Lee, Y.-S. Bae*, J. H. Kim*, Enhanced Performance of Mixed Matrix Membranes through a Graft Copolymer-Directed Interface and Interaction Tuning Approach, ChemSusChem, 2015, 8, 650-658. (Featured as Cover)

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36. M. Patel, R. Patel, W. S. Chi, J. H. Kim*, J.-S. Sung*, Antibacterial behaviour of quaternized poly(vinyl chloride)-g-poly(4-vinyl pyridine) graft copolymer, Chin. J. Polym. Sci., 2015, 33, 265-274.

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35. W. S. Chi, J. H. Lee, M. S. Park, J. H. Kim*, Recent Research Trends of Mixed Matrix Membranes for CO2 Separation, Membr. J., 2015, 25, 373-384.

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[2014]

33. W. S. Chi†, Y. Jeon†, S. J. Park, J. H. Kim* and Y.-G. Shul*, Fabrication of Surface-Patterned Membranes via a ZnO Nanorod Templating Method for PEMFC Applications, ChemPlusChem, 2014, 79, 1109-1115.

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32. R. Patel, W. S. Chi, S. H. Ahn, C. H. Park, H.-K. Lee*, J. H. Kim*, Synthesis of poly(vinyl chloride)-g-poly(3-sulfopropyl methacrylate) graft copolymers and their use in pressure retarded osmosis (PRO) membranes, Chem. Eng. J., 2014, 247, 1-8.

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31. J. T. Park, W. S. Chi, S. J. Kim, D. Lee*, J. H. Kim*, Mesoporous TiO2 BraggStack Templated by Graft Copolymer for Dye-sensitized Solar Cells, Sci. Rep., 2014, 6, 670-678.

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30. S. H. Ahn, D. J. Kim, D. K. Roh, W. S. Chi, J. H. Kim*, Structural Control of Hierarchically-Ordered TiO2 Films by Water for Dye-Sensitized Solar Cells, ChemPhysChem, 2014, 15, 1841-1848.

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29. R. K. Roh, S. J. Kim, W. S. Chi, J. K. Kim, J. H. Kim*, Dual-Functionalized Mesoporous TiO2 Hollow Nanospheres for Improved CO2 Separation Membranes, Chem. Commun., 2014, 50, 5717-5720.

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28. S. Kim, J. H. Koh, X. Yang, W. S. Chi, C. Park, J. W. Leem, B. Kim, S. Seo, Y. Kim, J. S. Yu, J. H. Kim, E. Kim*, Enhanced Device Efficiency of Bilayered Inverted Organic Solar Cells Based on Photocurable P3HTs with a Light-Harvesting ZnO Nanorod Array, Adv. Energy Mater., 2014, 4, 1301338.

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26. S. Y. Heo, J. K. Koh, G. Kang, S. H. Ahn, W. S. Chi, K. Kim, J. H. Kim*, Bifunctional Moth-Eye Nanopatterned Dye-Sensitized Solar Cells: Light Harvesting and Self-Cleaning Effect, Adv. Energy Mater., 2014, 4, 1300632. (Featured as Cover)

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25. R. K. Roh, W. S. Chi, H. Jeon, S. J. Kim, J. H. Kim*, High Efficiency Solid-state Dye-sensitized Solar Cells Assembled with Hierarchical Anatase Pine Tree-like TiO2 Nanotubes, Adv. Funct. Mater., 2014, 24, 379-386. (Featured as Cover)

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[2013]

24. S. H. Ahn, D. J. Kim, W. S. Chi, J. H. Kim*, One-dimensional Hierarchical Nanostructures of TiO2 Nanosheets on SnO2 Nanotubes for High Efficiency Solid-state Dye-sensitized Solar Cells, Adv. Mater., 2013, 25, 4893-4897. (Featured as Cover)

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23. W. S. Chi, S. U. Hong*, B. Jung, S. W. Kang, Y. S. Kang, J. H. Kim*, Synthesis, structure and gas permeation of polymerized ionic liquid graft copolymer membranes, J. Membr. Sci., 2013, 443, 54-61.

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21. S. H. Ahn, W. S. Chi, D. J. Kim, S. Y. Heo, J. H. Kim*, Honeycomb-like Organized TiO2 Photoanodes with Dual Pores for Solid-State Dye-Sensitized Solar Cells, Adv. Funct. Mater., 2013, 23, 3901-3908. (Featured as Cover)

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20. J. H. Oh†, W. S. Chi†, J. H. Lee, J. H. Kim*, S. W. Kang*, Synthesis of Poly(Vinyl Chloride)-g-Poly(Ionic Liquids) and Its Applications to Tuning Surface for Copper Nanoparticles, Ind. Eng. Chem. Res., 2013, 52, 9607-9611.

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19. W. S. Chi, D. K. Roh, S. J. Kim, S. Y. Heo, J. H. Kim*, Hybrid electrolytes prepared from ionic liquid-grafted alumina for high-efficiency quasi-solid-state dye-sensitized solar cells, Nanoscale, 2013, 5, 5341-5348. (Featured as Cover)

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18. W. S. Chi, H. Jeon, S. J. Kim, D. J. Kim, J. H. Kim*, Ionic liquid crystal: Synthesis, structure and applications to I2-free solid-state dye-sensitized solar cells, Macromol. Res., 2013, 21, 315-320. (Featured as Cover)

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17. J. T. Park, W. S. Chi, D. K. Roh, S. H. Ahn, J. H. Kim*, Hybrid Templated Synthesis of Crack-free, Organized Mesoporous TiO2 Electrodes for High Efficiency Solid-state Dye-sensitized Solar cells, Adv, Funct. Mater., 2013, 23, 26-33. (Featured as Cover)

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16. S. Y. Heo, W. S. Chi, J. K. Kim, C. S. Lee, J. H. Kim*, Preparation of TiO2 Nanowire/Nanoparticles Composite Photoanodes for Dye-sensitized Solar Cells, Rapid Comm. Photosci., 2013, 2, 82-84.

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[2012]

15. B. Kim J. K. Koh, J. Kim, W. S. Chi, J. H. Kim*, E. Kim*, Room Temperature Solid-State Synthesis of a Conductive Polymer for Applications to Stable I2-Free Dye-Sensitized Solar Cells, ChemSusChem, 2012, 5, 2173-2180.

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14. W. S. Chi, S. H. Ahn, H. Jeon, Y.-G. Shul and J. H Kim*, Rubbery copolymer electrolytes containing polymerized ionic liquid for dye-sensitized solar cells, J. Solid State Electrochem., 2012, 16, 3037-3043.

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12. R. K. Roh, J. A. Seo, W. S. Chi, J. K. Koh, J. H. Kim*, Facile synthesis of size-tunable mesoporous anatase TiO2 beads using graft copolymer for quasi-solid and all-solid dye-sensitized solar cells, J. Mater. Chem., 2012, 22, 11079-11085.

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11. W. S. Chi, R. Patel, H. Hwang, Y.-G. Shul*, J. H. Kim*, Preparation of poly(vinylidene fluoride) nanocomposite membranes based on graft polymerization and sol-gel process for polymer electrolyte membrane fuel cells, J. Solid State Electrochem., 2012, 16, 1405-1414.

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8. J. T. Park, D. K. Roh, W. S. Chi, R. Patel, J. H. Kim*, Fabrication of double layer photoelectrodes using hierarchical TiO2 nanospheres for dye-sensitized solar cells, J. Ind. Eng. Chem., 2012, 18, 449-455.

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7. J. H. Koh, S. J. Byun, W. S. Chi, J. H. Kim*, Preparation of nanoporous films from self-assembled poly(vinyl chloride-g-methyl methacrylate) graft copolymer, Korean J. Chem. Eng., 2012, 29, 959-963.

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[2011]

6. W. S. Chi, J. K. Koh, S. H. Ahn, J.-S. Shin, H. Ahn, D. Y. Ryu, J. H. Kim*, Highly efficient I2-free solid-state dye-sensitized solar cells fabricated with polymerized ionic liquid and graft copolymer-directed mesoporous film, Electrochem. Commun., 2011, 13, 1349-1352.

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5. R. K. Roh, J. K. Koh, W. S. Chi, Y.-G. Shul, J. H. Kim*, Proton conducting crosslinked polymer electrolyte membranes based on SBS block copolymer, J. Appl. Polym. Sci., 2011, 121, 3283-3291.

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4. S. J. Byun, J. A. Seo, W. S. Chi, Y.-G. Shul*, J. H. Kim*, Synthesis of Porous TiO2 Thin Films Using PVC-g-PSSA Graft Copolymer and Their Use in Dye-sensitized Solar Cells, Membr. J., 2011, 21, 193-200.

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3. S. J. Byun, J. A. Seo, W. S. Chi, Y.-G. Shul*, J. H. Kim*, Preparation of Ag Nanoparticles by Templating Poly(vinyl chloride)-g-poly(styrene sulfonic acid) Graft Copolymer Membrane, Membr. J., 2011, 21, 39-45.

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2. H. Jeon, S. H. Ahn, W. S. Chi, J. H. Kim*, Use of Amphiphilic Graft Copolymer as Dispersant for Carbon Nanotubes, Polymer(Korea), 2011,35, 615-618

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1. S. H. Ahn, H. W. Kim, S. H. Lee, W. S. Chi, J. R. Choi, Y. G. Shul*, J. H. Kim*, Effect of oligomer on dye-sensitized solar cells employing polymer electrolytes, Korean J. Chem. Eng., 2011, 28, 138-142.

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Patents

14. D. J. Lee, Y. H. Choi, C. H. Lee, S.-J. Yeom, H. W. Kim, W. S. Chi, K. J. Kim, BACILLUS sp. FOR THE DEGRADATION OF AROMATIC-BASED PLASTICS AND USE THEREOF, Republic of Korea, 10-2023-0148911(Application).

13. C. H. Hong, Y. H. Choi, S.-J. Yeom, W. S. Chi, Novel microorganism for polystyrene Biodegradation, Republic of Korea, 10-2022-0086650(Application).

12. S.-J. Yeom, C.-H. Yun, W. S. Chi, C. G. Park, Y. B. Kim, S. M. Cheon, Novel microorganism with plastic-degrading activity and use thereof, Republic of Korea, 10-2022-0098026(Application).

11. S.-J. Yeom, C.-H. Yun, W. S. Chi, S.-D. Yun, C. O. Lee, Novel microorganism with plastic-degrading activity and use thereof, Republic of Korea, 10-2021-0113277(Application), 10-2383003(Registration).

10. S.-J. Yeom, C.-H. Yun, W. S. Chi, H.-W. Kim, J. H. Jo, Novel microorganism with plastic-degrading activity and use thereof, Republic of Korea, 10-2021-0043089(Application), 10-2383008(Registration).

9. Z.P. Smith, W. S. Chi, B. J. Sundell, K. Zhang, S. C. Hayden, D. J. Harrigan, H. Lee, Branched metal-organic framework nanoparticles in mixed-matrix membranes and associated methods, USA, US20210129088A1(Application).

8. Z. P. Smith, W. S. Chi, H. Lee, Branched metal-organic framework nanoparticles and associated methods, USA, US20210130372A1(Application).

7. W. S. Chi, C. S. Lee, J. H. Kim, Hierarchically ordered mesoporous titanium dioxide based on metal-organic frameworks, preparation method thereof and dye-sensitized solar cell using the same, Republic of Korea, 10-2015-0119925 (Application), 101733405 (Registration).

6. J. H. Lee, W. S. Chi, J. P. Jung, J. H. Kim, Gas separation membrane containing amphiphilic copolymer and method for preparing the same, Republic of Korea, 10-2015-0107386 (Application), 101680077 (Registration).

5. D. K. Roh, S. J. Kim, H. Jeon, W. S. Chi, B. Jung, J. H. Kim, Method of preparing meso-porous magnesium titanate and carbon dioxide separation membranes using graft copolymer and method of preparing the same, Republic of Korea, 10-2013-0082948 (Application), 101577790 (Registration).

4. D. K. Roh, S. J. Kim, W. S. Chi, S. Y. Heo, J. H. Kim, Carbon dioxide separation membrane comprising porous hollow titanium dioxide nanoparticle and manufacturing method thereof, Republic of Korea, 10-2014-0035989 (Application), 101576052 (Registration) & USA, 14/669,660 (Application), 9233343 (Registration).

3. S. H. Ahn, D. J. Kim, W. S. Chi, J. H. Kim, TiO2 nanosheet coated SnO2 nanoparticles, dye-sensitized solar cells comprising the same and method for fabrication thereof, Republic of Korea, 10-2013-0078506 (Application), 101540971 (Registration).

2. S. H. Ahn, W. S. Chi, J. H. Kim, Preparation method of mesoporous TiO2 film using TiO2 nanoparticles and graft copolymer and dye-sensitized solar cells using the same, Republic of Korea, 10-2012-0032397 (Application), 101382532 (Registration). 

1. W. S. Chi, C. M. Lee, Y.-G. Shul, J. H. Kim, Process of preparing hybrid membranes comprising functional material by sol-gel and thus prepared hybrid membranes, Republic of Korea, 10-2010-0139971 (Application), 101304240 (Registration).