Chang Y. Ryu
Assistant Professor of Chemistry,
Rensselaer Polytechnic Institute
B.S., Chemical Technology, (with honors),
Seoul National University, Korea, 1990
M.S., Chemical Technology, Seoul National University, Korea,
Ph.D., Chemical Engineering, University of Minnesota, 1998
Ryu spent a year working as a research associate
for the Korea Institute of Science and Technology. Upon earning
his Ph.D. from the University of Minnesota, Ryu served as a postdoctoral
researcher for the University of California at Santa Barbara for
nearly two years. He joined Rensselaer in late 2000 as an assistant
professor of chemistry. His honors and awards include the Mettler-Toledo
Thermal Analysis Education Grant in 2001, the Arthur K. Doolittle
Award from the American Chemical Society's (ACM) Division of Polymeric
Materials Science and Engineering (PMSE) in 1998, and a Korea Foundation
for Advanced Studies Scholarship from 1993 through 1998.
Ryu leads an NSEC Seed Grant project entitled,
"Synthesis and HPLC Separation of ABC Three-Arm Star Block
Copolymers." He also serves as a director for Rensselaer's
centralized polymer thermal characterization facility, and offers
interdisciplinary training for students and researchers in chemistry,
chemical engineering, and materials.
Ryu is researching synthesis and characterization
of heterogeneous polymers such as polymer blends and block polymers,
and polymer-carbon nanotube hybrid materials. He is studying structure-property
relationships of multiphase polymer systems, where their performance
and applications are closely related to the mesoscopic morphologies.
Ryu is working to develop a synthesis protocol that allows researchers
to design and manufacture the model polymers and is also considering
the application of these techniques to solve industrially relevant
problems. He aims to guide the rational design of polymeric materials,
thus gaining a fundamental understanding in the correlation between
properties and structures in multiphase polymers.
He is also interested in developing carbon nanotubes
(wires) imbedded in insulating polymer sheath by the synthesis of
polymer-carbon nanotube hybrid materials. Polymer grafted nanotubes
could result in a "cylinders-in-cylinders" morphology
and can be subsequently aligned or "pulled" on a large
scale by applying shear, electric field, or magnetic field. These
nanotube-containing copolymers will have potential applications
in high-resolution flat screen display. Possible applications as
structural reinforcements in composite materials for microelectromechanical
systems (MEMS) applications are also of interest, because the grafted
polymer chains improve the adhesion between stiff nanotubes and
Yang, H.; Shin, T. J.; Yang, L.; Cho, K. W.; Ryu, C. Y.; Bao, Z. "Effect of Mesoscale Crystalline Structure on Field-Effect Mobility of Regioregular Poly(3-hexyl thiophene) in Thin Film Transistors,"
Adv. Function. Mat., 15, (4), 671-676, (2005).
Yang, X. W.; Hua, F. J.; Yamato, K.; Ruckenstein, E.; Gong, B.; Kim, W.; Ryu, C. Y. "Supramolecular AB diblock copolymers," Angew. Chem.-Int. Edit., 43, 6471-6474, (2004).
Han, J. T.; Lee, D. H.; Ryu, C. Y.; Cho, K. W., "Fabrication of superhydrophobic surface from a supramolecular organosilane with quadruple hydrogen bonding,"
J. Am. Chem. Soc., 126, 4796-4797, (2004).
Park, S.; Park, I. ; Chang, T.; Ryu, C. Y.
"Interaction-controlled HPLC for block copolymer analysis and separation," J. Am. Chem. Soc. , 126, 8906-8907 (2004).
Lastella, S.; Jung, Y. J.; Yang, H. C.; Vajtai, R.; Ajayan, P. M.*; Ryu, C. Y.*; Rider, D. A.; Manners, I., "Density control of single-walled carbon nanotubes using patterned iron nanoparticle catalysts derived from phase-separated thin films of a polyferrocene block copolymer," J. Mater. Chem., 14, 1791-1794, (2004).
Cho, J. H.; Lee, D. H.; Shin, H. S.; Pattanayek, S. K.; Ryu, C. Y.; Cho, K.*, "Exploiting Poly(dimethylsiloxane)-Modified Tips To Evaluate Frictional Behavior by Friction Force Microscopy," Langmuir, 20, 11499-11503, (2004).
Viswanathan, G.; Chakrapani, N.; Yang, H.C.; Wei, B. Q.; Chung, H. S.; Cho, K. W.; Ryu, C. Y.*; Ajayan, P. M.*, "Single-step in situ synthesis of polymer-grafted single-wall nanotube composites," J. Am. Chem. Soc. ,
125, (31), 9258-9259, (2003).
Lahiff E, Ryu CY, Curran S, Minett AI, Blau WJ, Ajayan PM*, "Selective positioning and density control of nanotubes within a polymer thin film, " Nano Letters, 3,
(10), 1333-1337 (2003).
Chang Y. Ryu
Department of Chemistry
Rensselaer Polytechnic Institute
110 Eighth Street
Troy, N.Y. 12180 USA
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