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Synthesis of norbornene block copolymers containing polyhedral oligomeric silsesquioxane by sequential ring-opening metathesis polymerization
- Younghwan Kwon, Kyung-Hoe Kim
- Materials Science
- 1 August 2006
The synthesis of a series of poly(POSS-NBE-b-MTD) copolymers was successfully accomplished, taking advantage of sequential, ring-opening, metathesis block copolymerization using RuCl2(=CHPh)(PCy3)2…
Preparation and characterization of surface energy of BPDA-BAPP polyimide
- Kyung-Hoe Kim, Yong-Gwon Kim, Younghwan Kwon
- Materials Science
- 1 June 2009
The surface properties (water sorption and repellency, adhesion) are closely related to the surface tension of polymer solids. The critical surface tension (γc) and surface tension (γs) of a polymer…
Synthesis and Photoluminescent Properties of Red Phosphorescent Random Copolymers with Photopatternable Moiety
- Minhyeon Song, Kyung-Hoe Kim, Younghwan Kwon, Y. Han
- Materials Science
- 10 August 2007
Two types of photopatternable blue emitting random copolymers, poly(VK-ran-CEMA) ( 1 ) and poly(VK-ran-CEMA-ran-MAE) ( 2 ), containing UV curable cinnamoyl moieties capable of generating negative…
The Improvement of Surface Energy of BPDA-EDA Polyimide by Controlling Molecular-Level Structure
- Kyung-Hoe Kim, Yong-Gwon Kim, Younghwan Kwon
- Materials Science
- 10 November 2009
The surface properties (water sorption and repellency, adhesion) are closely related to the surface tension of polymer solid. Critical surface tension γ C and surface tension γ S of a polymer solid…
Synthesis, Characterization and Surface Properties of BPDA-MDA Polyimide
- Kyung-Hoe Kim, Younghwan Kwon, Yong-Gwon Kim
- Materials Science
- 10 August 2007
BPDA (3,3′,4,4′-biphenyl tetracarboxylic dianhydride)-MDA (p,p′-methylene dianiline) polyimide was successfully synthesized. Critical surface tension γc and surface tension γs of BPDA-MDA polyimide…
Evaluation of the Surface Properties of BPDA-BAPE Polyimide by Using a Quantitative Imaging Analysis
- Kyung-Hoe Kim, Younghwan Kwon
- Materials Science
- 1 August 2005
In order to predict the behavior of polyimides and to optimize their fabrication, it is important to understand the relationship between polyimide's structure and their surface properties. The…
Phosphorescent Polymer Light-Emitting Devices Doped with Red Iridium (III) Bis(2-phenyl-Isoquinoine)(2-acetyl-cyclohexane) Complex
- Hui Wang, Jeong-Tak Ryu, Kyung-Hoe Kim, Younghwan Kwon
- Chemistry, Materials Science
- 10 November 2009
Devices with a configuration of ITO/PEDOT/Ir-PIQCH (10 wt%) in Polymer/BAlq (30 nm)/Alq3(20 nm)/LiF (1 nm)/Al (120 nm) were fabricated. In the emitting layer, three different polymers,…