Sangwoo Lee

Please see the Lee Research Group and other tabs for more details.

About

Dr. Sangwoo Lee is an experimental polymer scientist and engineer working on the thermodynamics, structures, and properties of polymeric materials. His current research interests ranges from fundamental polymer science and self-assembly physics to practical applications of polymeric materials, in particular, to solve polymer recycling and upcycling problems.

Education & Training
  • Postdoctoral Associate - Chemical Engineering and Materials Science, University of Minnesota, 2011 - 2013.
  • Ph.D. - Chemical Engineering, University of Minnestoa, 2011.
  • B.S. - Chemical Engineering, Seoul National University, South Korea, 2003.

 

Honors and Awards

  • 2015 American Chemical Society - Petroleum Research Fund, Doctoral New Investigator Grant.
  • 2014 Cozzarelli Prize - Proceedings of the National Academy of Sciences U.S.A.
  • 2013 Finalist, Quadrant Award, Quadrant, Zȕrich, Switzerland.
  • 2011 Best Dissertation Award in Physical Sciences and Engineering, University of Minnesota.

 

Professional Experience

  • Associate Professor, Rensselaer Polytechnic Institute, 2021 - Current.
  • Adjunt Professor, Seoul National University, South Korea, 2023 - Current.
  • Assistant Professor, Rensselaer Polytechnic Institute, 2014 - 2020.

 

Professional Societies

  • American Institute of Chemical Engineers (Materials Engineering and Science Division), Member
  • American Physical Society (Division of Polymer Physics), Member

 

Research

Other Focus Areas

Polymer Thermodynamics, Mesoscale Structures in Inhomogeneous Polymers, Material Design and Synthesis, and Recycling/Upcycling.

Teaching

Prof. Lee focuses on how he can help students to practice and develop critical thinking capabilities for problem solving beyond technical aspects.

Current Courses
  • Chemical Reactor Design

    This course discusses three key reactor systems, Batch, Continuously-Stirred Tank, and Plug-Flow Reactors, and their behaviors in dynamic and steady states.

  • Physical Chemistry of Polymers

    This course aims to deliver the introductory materials to understand the structure and dynamic properties of polymeric materials.

  • Colloid and Interfacial Science 

    This course discusses the stability, processing, and characterization of colloid systems, important to nearly all chemical processes.

Publications

Peer-Reviewed Articles

  1. Pranav Ramesh, Mary Margaret Sta Cruz, Surya Karla, Juhong Ahn, Sangwoo Lee, Patrick T. Underhill, Georges Belfort, "A new class of “structure-by-design” polymer membranes for organic solvent nanofiltration with controllable selectivity," Journal of Membrane Science, 692, 1222296 (2024), DOI: 10.1016/j.memsci.2023.122296.
  2. Sangwoo Lee, Juhong Ahn, Liwen Chen, Patryk Wąsik "Origin of Polytypism in Block Copolymer Materials,"Physical Review Materials, 7, 110301 (2023), DOI: 10.1103/PhysRevMaterials.7.110301.

    -> This article is a part of the Self-Assembly of Complex Phases in Block Copolymer Materials collection.

  3. Atharwa Thigale, Carrie Trant, Juhong Ahn, Melissa Nelson, Chang Y. Ryu, Chulsung Bae, Sangwoo Lee, "Superacid-assisted Degradation of Polystyrene," Macromolecules, 56, 5117 (2023), DOI: 10.1021/acs.macromol.2c01146.
  4. Juhong Ahn, Liwen Chen, Patrick T. Underhill, Guillaume Freychet, Mikhail Zhernenkov, Sangwoo Lee, "Continuous Transition of Colloidal Crystals through Stable Random Orders," Soft Matter, 19, 3257 (2023), DOI: 10.1039/D3SM00199G.

    -> This article was selected for the Journal Cover.

  5. Seungbae Jeon, Taesuk Jo, Seungyun Kim, Kyungkon Kim, Byeongdu Lee, Sangwoo Lee, Du Yeol Ryu, "Modifying Frank-Kasper Mesophases by Modulating Chain Configuration in PDMS-b-PTFEA Copolymers," Macromolecules, 55, 8049 (2022), DOI: 10.1021/acs.macromol.2c01146.
  6. Toluwanimi O. Bello, Sangwoo Lee, Patrick T. Underhill, "Mesoscale Simulation Approach for Assembly of Deformable Objects," Soft Matter, 18, 5106-5113 (2022), DOI:10.1039/D2SM00437B.
  7. Samuel Leguizamon, Juhong Ahn, Sangwoo Lee, Brad Jones, "Tuneable Phase Behaviour and Glass Transition via Polymerization-Induced Phase Separation in Crosslinked Step-Growth Polymers,"Soft Matter, 18, 4455-4463 (2022), DOI: 10.1039/D2SM00485B.
  8. Todd M. Alam, Juhong Ahn, Sangwoo Lee, Samuel C. Leguizamon, Brad H. Jones, "Dynamic Heterogeneity and Nanophase Separation in Rubber-toughened Amine-cured Highly Cross-linked Polymer Networks," Polymer Testing, 112, 107616 (2022), DOI:10.1016/j.polymertesting.2022.107616.
  9. Seungbae Jeon, Taesuk Jun, Hui Il Jeon, Hyungju Ahn, Sangwoo Lee, Byeongdu Lee, and Du Yeol Ryu, "Various Low-Symmetry Phases in High-χ and Conformationally Asymmetric PDMS-b-PTFEA Copolymers," Macromolecules, 54, 9351 (2021), DOI: 10.1021/acs.macromol.1c01760.
  10. Tae-Young Heo, Sojeong Kim, Liwen Chen, Anna Sokolova, Sangwoo Lee, and Soo-Hyung Choi, "Molecular Exchange Kinetics in Complex Coacervate Core Micelles: Role of Associative Interaction," ACS Macro Letters, 10, 1138 (2021), DOI:10.1021/acsmacrolett.1c00482.
  11. Samuel C. Leguizamon, Jackson Powers, Juhong Ahn, Sara Dickens, Sangwoo Lee, and Brad H. Jones, "Polymerization-Induced Phase Separation in Rubber-Toughened Amine-Cured Epoxy Resins: Tuning Morphology from the Nano- to Macro-scale," Macromolecules, 54, 7796 (2021), DOI: 10.1021/acs.macromol.1c01208.
  12. Pranav Ramesh, Weiwei L. Xu, Mirco Sorci, Carrie Trant, Sangwoo Lee, James Kilduff, Miao Yu and Georges Belfort, "Organic solvent filtration by brush membranes: Permeability, selectivity and fouling correlate with degree of SET-LRP grafting," Journal of Membrane Science, 618, 118699 (2021), DOI: 10.1016/j.memsci.2020.118699.
  13. Carrie Trant, Sooyeon Hwang, Chulsung Bae, Sangwoo Lee, "Synthesis and Characterization of Anion Exchange Membranes using Semi-crystalline Triblock Copolymers in Ordered and Disordered States,"Macromolecules, 19, 8548 (2020), DOI: 10.1021/acs.macromol.0c01761.
  14. Brad H. Jones, Todd M Alam, Sangwoo Lee, Mathew C Celina, Joshua P Allers, Sungmin Park, Liwen Chen, Estevan J Martinez, Jaclynn L Unangst, "Curing Behavior, Chain Dynamics, and Microstructure of High Tg Thiol-Ene Networks with Systematically Varied Network Heterogeneity," Polymer, 205, 122783 (2020), DOI: 10.1016/j.polymer.2020.122783.
  15. Liwen Chen, Sangwoo Lee, "Size Characterization of Core-Corona Spherical Particles using Model-Free Inverse Fourier Transform Method,"Polymer, 202, 122623 (2020), DOI:10.1016/j.polymer.2020.122623.
  16. Gagan N. Kangovi, Sangwoo Lee, "Engineering the Crystallization Behavior of an Organic Compound Mixed with Polymers using Hidden Liquid Phase Domains," Molecular Systems Design & Engineering, 5, 177 (2020), DOI: 10.1039/C9ME00063A.

    -> This article is a part of the MSDE Emerging Investigator 2020 collection.

  17. Liwen Chen, Han Seung Lee, Mikhail Zhernenkov, Sangwoo Lee, "Martensitic Transformation of Close-packed Polytypes of Block Copolymer Micelles," Macromolecules, 52, 6649 (2019), DOI: 10.1021/acs.macromol.9b00917.
  18. Tae-Young Heo, In-Hye Kim, Eunji Lee, Liwen Chen, Sangwoo Lee, Soo-Hyung Choi, "Effect of Ionic Group on the Complex Coacervate Core Micelle Structure," Polymers, 11, 455 (2019), DOI: 10.3390/polym11030455.
  19. Gagan N. Kangovi, Sungmin Park, Sangwoo Lee, "Thermodynamic and Kinetic Effects on the Phase States of Amorphous Polymer and Organic Crystal Mixtures," Macromolecules, 51, 7274 (2018), DOI: 10.1021/acs.macromol.8b01104.
  20. Liwen Chen, Han Seung Lee, Sangwoo Lee, "Close-Packed Block Copolymer Micelles Induced by Temperature Quenching," Proceedings of the National Academy of Sciences USA, 115, 7218 (2018), DOI: 10.1073/pnas.1801682115.

    -> Based on this work, Liwen Chen won the 2019 Frank J. Padden Jr. Award from the Division of Polymer Physics in the 2019 American Physical Society March meeting. This report was also featured in the September 2018 Newsletter of National Synchroron Light Source-II of the Brookhaven National Laboratory.

  21. Jong Yeob Jeon, Zachary Umstead, Gagan N. Kangovi, Sangwoo Lee, Chulsung Bae, "Functionalization of Syndiotactic Polystyrene via Superacid-Catalyzed Friedel-Crafts Alkylation," Topics in Catalysis, 61, 610 (2018), DOI: 10.1007/s11244-018-0913-6.
  22. Gagan N. Kangovi, Sangwoo Lee, "Phase Behavior of Pyrene and Vinyl Polymers with Aromatic Side Groups," Macromolecules, 50, 8678 (2017), DOI: 10.1021/acs.macromol.7b01893.
  23. Zhen Huang, Gagan N. Kangovi, Wei Wen, Sangwoo Lee, Li Niu, "An RNA Aptamer Capable of Forming a Hydrogel by Self-Assembly," Biomacromolecules, 18, 2056 (2017), DOI: 10.1021/acs.biomac.7b00314
  24. Timothy M. Gillard, Sangwoo Lee, Frank S. Bates, "Dodecagonal quasicrystalline order in a diblock copolymer melt," Proceedings of the National Academy of Sciences USA, 113, 5167 (2016), DOI: 10.1073/pnas.1601692113.
  25. Siddharth Chanpuriya, Kyungtae Kim, Jingwen Zhang, Sangwoo Lee, Akash Arora, Kevin D. Dorfman, Kris T. Delaney, Glenn H. Fredrickson, Frank S. Bates, "Cornucopia of Nanoscale Ordered Phases in Sphere-Forming Tetrablock Terpolymers," ACS Nano, 10, 4961 (2016), DOI: 10.1021/acsnano.6b00495.
  26. Sangwoo Lee, Chris Leighton, Frank S. Bates, "Sphericity and Symmetry Breaking in the Formation of Frank–Kasper Phases from One Component Materials," Proceedings of the National Academy of Sciences USA, 111, 17723 (2014), DOI: 10.1073/pnas.1408678111.

    -> A commentray is accomopanied in the same issue of the journal. This article recevied 2014 Cozzarelli Prize in the Engineering and Applied Sciences category by the Proceedings of the National Academy of Sciences. The projection image of σ-phase is selected as the cover page of the same issue of the journal.

  27. Han Seung Lee, Manickam Adhimoolam Arunagirinathan, Apostolos Vagias, Sangwoo Lee, Jayesh R. Bellare, H. Ted Davis, Eric W. Kaler, Alon V. McCormick, and Frank S. Bates, "Almost Fooled Again: New Insights into Cesium Dodecyl Sulfate Micelle Structures," Langmuir, 30, 12743 (2014), DOI: 10.1021/la502809y.
  28. Sangwoo Lee, Timothy Gillard, Frank S. Bates, "Fluctuations, Order, and Disorder in Short Diblock Copolymers," AIChE Journal, 59, 3502 (2013), DOI: 10.1002/aic.14023.
  29. Athanasios Touris, Sangwoo Lee, Marc A. Hillmyer, and Frank S. Bates, "Synthesis of Tri- and Multiblock Polymers with Asymmetric Poly(ethylene oxide) End Blocks," ACS Macro Letters, 1, 768 (2012), DOI: 10.1021/mz3002319.
  30. Soo-Hyung Choi, Sangwoo Lee, Haidy E. Soto, Timothy P. Lodge, and Frank S. Bates, "Nanoscale Mixing of Soft Solids," Journal of American Chemical Society, 133, 1722 (2011), DOI: 10.1021/ja110871b.
  31. Sangwoo Lee, Michael J. Bluemle, Frank S. Bates, "Discovery of a Frank-Kasper σ-phase in Sphere-Forming Block Copolymer Melts," Science, 330, 349 (2010), DOI: 10.1126/science.1195552.

    -> This report was featured by the National Public Radio. A commentrary is accompanied in the same issue of the journal.

  32. Sangwoo Lee, Manickam Adhimoolam Arunagirinathan, Frank S. Bates, "Path Dependent Morphologies in Oil/Water/Diblock Copolymer Mixtures," Langmuir, 26, 1707 (2010), DOI: 10.1021/la902671r.
  33. Tomoko Shimada, Sangwoo Lee, Frank S. Bates, Atsushi Hotta and Matthew Tirrell, "Wormlike Micelle Formation in Peptide-Lipid Conjugates Driven by Secondary Structure Transformation of the Headgroups," Journal of Physical Chemistry B, 113, 13711 (2009), DOI: 10.1021/jp901727q.
  34. Döne Demirgöz, Todd O. Pangburn, Kevin P. Davis, Sangwoo Lee, Frank S. Bates and Efrosini Kokkoli, "PR_b-targeted Delivery of Tumor Necrosis Factor by Polymersomes for the Treatment of Prostate Cancer," Soft Matter, 5, 2011 (2009), DOI: 10.1039/B814217C.

 

Patents

  1. Sangwoo Lee, Chulsung Bae, Musashi Briem, Sungmin Park, "Alkaline Anion Exchange Membranes Derived From Diphenylethylene And Co-Monomer Feedstock," Application No. PCT/US2019/057356, (2019).
  2. Frank S. Bates, Marc A. Hillmyer, Wilhelm Risse, Leslie Morgret, Michael S. Haas, Mark T. Martello, Sangwoo Lee, "Chewing Gums and Gum Bases Comprising Multi-block Copolymers," Publication No. WO/2012/122459, (2012).
  3. Leslie Morgret, Michael S. Haas, Xiaohu Xia, Marc Hillmyer, Mark T. Martello, Christopher Macosko, Luca Martinetti, Frank Bates, Sangwoo Lee, Michael T. Bunczek, Michael J. Greenberg, "Chewing gum compositions," Publication No. WO/2011/032026, (2011).

Lee Research Group

Current Group Members:

Juhong AhnJuhong Ahn
Room: Empire State Hall 1701
Phone: 518-276-6872
E-mail: ahnj6@rpi.edu
Education 
M.S. in Chemical and Biomolecular Engineering, Sogang University, South Korea, 2018.
B.S. in Chemical and Biomolecular Engineering, Sogang University, South Korea, 2016

 

Michael Del Grosso
Room: Empire State Hall 1701
Phone: 518-276-6872
E-mail: delgrm@rpi.edu
Education
B.S. in Chemical Engineering, University of New Haven, 2023.

 

Atharwa Thigale
Room: Empire State Hall 1701
E-mail: thigaa@rpi.edu
Education
B. Tech., Dyestuff and Intermediates Technology,Institute of Chemical Technology, 2020

 

 

 

Former Group Members:

  • Musashi Briem: Ph.D., 2022 (Booz Allen Hamilton)
  • Toluwanimi Bello: Ph.D., 2022 (GlobalFoundries)
  • Seungbae Jeon: Visiting Graduate Student, 2022 (Yonsei University)
  • Henry Hua: M.E.,2022 (Pfizer)
  • Melissa Nelson: M.E., 2021 (Axalta)
  • Carrie Trant: Ph.D., 2021 (Entegris)
  • Sungmin Park: Postdoctoral Associate 2018 - 2019 (Korea Research Institute of Chemical Technology)
  • Liwen Chen: Ph.D., 2019 (University of Shanghai for Science and Technology)
  • Gagan N. Kangovi: Ph.D., 2019 (Intel)
  • Erik Zimmerman: M.S., 2017 (King Industries)

Group Pictures

2023 Group Picture

From left to right - Sangwoo, Jonathan, Atharwa, Juhong, and Michael. November 2023.

 

From left to right - Musashi, Atharwa, Juhong, Sangwoo, and Andrew. November 2022.

 

2021 Group Picture

In a virtual space (Feb. 16, 2021).

 

2019 Group Picture

From left to right - Musashi, Toluwanimi, Sangwoo, Juhong, Carrie, Melissa, Liwen. November 2019.

 

2018 Group Picture

From left to right - Liwen, Carrie, Sangwoo, Sungmin, Gagan, Toluwani, and Musashi. November 2018.

 

From left to right - Liwen, Gagan, Carrie, Sangwoo, Musashi, Toluwani, Andrew, Erik. December 2017.

 

From left to right, Sangwoo, Liwen, Carrie, Gagan, Erik. July 20, 2016.

 

-------

Some pictures of lab space and equipment - Empire State Hall (Polymer Center) 1901.

3D Crystal Jigsaw Puzzles

3D Crystal Jigsaw Puzzles

Many crystal structures are visualized by unit cell representations noting the lattice sites, and the location of the lattice sites are represented with spheres. However, we think the sphere unit model may not be enough to explain the origin of the crystal structures. Rather, crystal structures represented by Wigner-Seitz cells, representing net domains of lattice sites, might be very helpful to understand interesting features. We prepared a set of 3D crystal jigsaw puzzles based on the Wigner-Seitz cell polyhedra and base frames. The library of printable 3D jigsaw crystal structure puzzles is expanding. Please visit our webpage frequently to check new 3D jigsaw puzzles. You can download and use the STL files to prepare crystal puzzles for learning, teaching, and fun. The license term follows the CC BY-NC-SA.

 

Face Centered Cubic (Fm-3m)
FCC Wigner-Seitz Cell RepresentationFCC Puzzle Print

Wigner-Seitz Cell

Rhombic Dodecahedron (black)

STL file

 

Frame (clear)

STL file

 

Hexagonally Close-Packed (P6/mmm)
HCP Wigner-Seitz Cell Representation

Wigner-Seitz Cell

Trapezo-rhombic Dodecahedron (Grey)

STL file

 

Frame (clear)

STL file

 

Body-Centered Cubic (Im-3m)
BCC Wigner-Seitz Cell RepresentationBCC Puzzle Print

Wigner-Seitz Cell

Truncated Octahedron (white)

STL file

 

Frame (clear)

STL file

 

A15 (Pm-3n)
A15 Wigner-Seitz Cell RepresentationA15 Puzzle Print

Wigner-Seitz Cells

Dodecahedron (2a, Yellow / Black)

STL file

Tetrakaidecahedron (6c, Blue / White)

STL file

Frame (clear)

STL file

 

Frank-Kasper σ-phase (P42/mnm)
Sigma Wigner-Seitz Cell Representation (Top view)

 

Sigma Wigner-Seitz Cell Representation (Side view)
Sigma Puzzle PrintSigma Puzzle Print

Wigner-Seitz Cells

Dodecahedron (2b, Blue / Black)

STL file

Pentakaidecahedron (4f, Yellow / Grey)

STL file

Dodecahedron (8i, Purple / White)

STL file

Tetrakaidecahedron (8i', Green / Clear)

STL file

Tetrakaidecahedron (8j, Red / Clear)

STL file

Frame (clear)

STL file

 

 

Back to top