Colloidal Superstructures and Porous Materials

We are mainly interested in the shape-controlled synthesis and surface modification of colloidal particles for assembling them into colloidal superstructures which can be extremely useful for photonic crystals, photonic glasses, metamaterials, colloidal transistor, sensors, lithium-ion battery electrodes. Such colloidal structures can be used as templates for porous materials. We have been working on hierarchically structured porous particles or films by introducing surfactants as additional templates, which have been implemented as separators or electrodes in lithium-ion battery, light scatterer for solar cells, substrates for colorimetric sensor or bioadhesives for bioloigical tissues. Recently, we have started developing polymeric nanoporous materials for developing solid electrolytes for lithium ion battery.

Colloidal Superstructures

Colloidal particles have been used as model system for atomic structures as well as building blocks for photonic crystals. Our main research interests are in the synthesis of new colloidal particles and their structures by self-assembly which would be great model system for understanding even more complex biological structures. Furthermore, using those new particles, we are also developing e-paper display, composite film for flexible display, strong light-scattering particles for display or cosmetic applications.

Research Projects:
  • DNA-coated colloidal particles
  • Photonic colloidal glasses ​
  • ​Self-assembled colloidal metamaterials

Porous Materials

Using colloidal particles or micelles as templates, macro- or mesoporous materials could be prepared which is now investigated as efficient host materials for drug delivery or colorimetric sensor dye. Porous particles have recently implemented for new bioadhesives on hydrogels or biological tissues. Recently, ionic liquid (block co-) polmyers are synthesized and assembled into bicotinuous porous polymer films for solid electrolytes of lithium ion battery.

Research Project:
  • Porous particles for biomedical imaging and diagnosis
  • Porous substrates for colorimetric sensors
  • Soild electrolytes for lithium ion batteries

Research Grant

  • Diamond-like colloidal photonic crystals by DNA-mediated self-assembly (Korean NRF, 2017-2022)
  • Solid electrolytes for lithium ion battery (Korean NRF, 2018-2023)
  • Highly Conformal Adhesive Carrier with Meso-Microstructure for Enhanced Skin Delivery of Effective Components (KHIDI, 2020-2022)
  • Amorepacific R&D Center (2020)
  • LG Chem Research Park (2019-2021)



  • Theranostic Macromolular Research Center (TMRC)  (Korean NRF, 2012-2020)
  • Korea-China international collaboration project (Korean NRF, 2018-2020)
  • Porous Nanoparticle Bank by Korean NRF (NRF-2014M3A9B8023471, 2014-2019)
  • BASF (2013-2019)
  • Samsung Research Funding Center for Samsung Electronics (SRFCMA1402-09, 2014-2019)
  • Amorepacific (2018-2019)