19 Result(s)

Article

Ultrafast Biodegradation Pathway of Polyimides Using Aromatic Diamine with Two Spiro Moieties Derived from Camphor

As a key structural element, polyimides (PIs) are garnering attention as high-functional polymers in the microelectronics and optical fields. Recently, their structural behaviour renders PIs as promising candi...

Su Ji Sim, Ju Hui Kang, Joon Hyuk Lee… in Journal of Polymers and the Environment (2023)

Article

High micropore number and specific surface of carbon fibers pretreated with a swarm of CO₂ micro–nanobubbles

Carbon materials are of fundamental importance in the fields of energy, electronics, and the environment. Using petroleum pitch has been proposed as a sustainable method to fabricate carbon fibers, yet the pro...

Joon Hyuk Lee, Soon Hong Lee, Dong Hack Suh in Environmental Chemistry Letters (2021)

Article

CO₂ treatment of carbon fibers improves adsorption of fuel cell platinum

Platinum (Pt)-based catalysts have sparked intensive interest in fuel cell research. Activated carbon fibers are widely used for electrodes due to their high conductivity, yet their surface treatment commonly ...

Joon Hyuk Lee, Soon Hong Lee, Dong Hack Suh in Environmental Chemistry Letters (2021)

Article

Utilization of carbon dioxide onto activated carbon fibers for surface modification

Increasing demand for fossil fuels is associated with massive atmospheric CO₂ levels. Considering that numerous studies have been published with CO₂ capturing techniques, utilizing techniques are yet in early sta...

Joon Hyuk Lee, Soon Hong Lee, Dong Hack Suh in Carbon Letters (2020)

Article

Thermally Stable Bio-Based Aliphatic Polycarbonates with Quadra-Cyclic Diol from Renewable Sources

CM diol (i.e., 2,4:3,5-di-O-camphor-D-mannitol) is bio-based monomer derived from D-mannitol and camphor. CM diol consists of complex hexagonal rings that are linked as the form of spiro, fused and bridged ring a...

Jeong Eon Park, Wook Kyeom Kim, Da Young Hwang, Gwang Ho Choi… in Macromolecular Research (2018)

Article

Enhanced dielectric properties of polyimide/BaTiO₃ nanocomposite by embedding the polypyrrole@polyimide core-shell nanoparticles

A three-phase polymer composite with a ferroelectric phase (BaTiO₃) and conductive core-shell polypyrrole@ polyimide (PPy@PI) nanoparticles embedded in a polyimide (PI) matrix was prepared by using a simple direc...

Hyun Woo Yoon, Changsuk Bok, No Kyun Park, Hyun Min Jung… in Macromolecular Research (2017)

Article

Effects of alkali and alkaline-earth oxides on thermal, dielectrical, and optical properties of zinc borate glasses for transparent dielectric

The development of a transparent dielectric layer with a low dielectric constant is essential for improving the luminous efficacy of plasma display panels (PDPs). In this study, a ZnO-B₂O₃-SiO₂-Al₂O₃ glass contai...

Byung Hwa Seo, Hyungsun Kim, Dong Hack Suh in Metals and Materials International (2009)

Article

Surface silylation and pore structure development of silica aerogel composites from colloid and TEOS-based precursor

Flexible aerogel-fiber composites were prepared by silylation and ambient drying of colloidal silica and tetraethylorthosilicate (TEOS)-based sol. After immersing glass fiber matrices into silica sol with coll...

Chang-Yeoul Kim, A-Rum Jang, Byung-Ik Kim… in Journal of Sol-Gel Science and Technology (2008)

Article

In situ crosslinked ionic gel polymer electrolytes for dye sensitized solar cells

We prepared an ionic gel polymer electrolyte for dye-sensitized solar cells (DSSCs) without leakage problem. Triiodide compound (BTDI) was synthesized by the reaction of benzene tricarbonyl trichloride with di...

Hyo ** Shim, Dong Wook Kim, Chang** Lee, Yongku Kang… in Macromolecular Research (2008)

Article

The solid-phase synthesis of amino acid-derived diacetylene lipids

We prepared amino acid-derived diacetylene monomers using solid-phase organic synthesis. The solidphase synthetic method allowed for the rapid and efficient preparation of functional diacetylenes. Amino acids ...

Jong-Man Kim, Bum Jun Park, Eun-Ju Chang, Sung Chul Yi… in Macromolecular Research (2005)

Article

The fluorescent effects on theN-substituents of polyarylenevinylenes having 1,2-diphenylmaleimide moieties

Model compounds and polymers havingN-substituted 1,2-diphenylmaleimide moieties were synthesized and characterized by NMR, IR, UV, and fluorescence spectroscopy. The fluorescence intensity could be controlled byN

Jun Kyu Lee, Nam Choul Yang, Ho Wook Choi, Dong Hack Suh in Macromolecular Research (2003)

Article

An iodide sensory property of a strongly blue-fluorescent polycationic molecular wire from a new polybenzimidazole

Nam Choul Yang, Sang Min Lee, Dong Hack Suh in Polymer Bulletin (2003)

Article

Synthesis of a new polyarylenvinylene derivative based on a terstyryl group linked by a maleimide group

Nam Choul Yang, Dong Hack Suh in Polymer Bulletin (2001)

Article

Synthesis and the properties of novel cycloaliphatic-aromatic polyamides having pendent N,N'-diphenyl imido groups

: We have investigated a novel monomer having two pendent phenyl imido groups for preparing new cycloaliphatic-aromatic polyamides. Novel polyamides were synthesized by direct polycondensation reaction of N,N'-di...

Sang Hyun Park, Jae Wook Lee, Dong Hack Suh in Polymer Bulletin (1999)

Article

Synthesis and optical properties of poly(phenylenevinylene) modified with 3,4-bis(phenylene)-3-cyclobutene-1,2-dione moiety

Jae Kyun Jeong, Sung Jae Choi, Tae Hyung Rhee, Nam Choul Yang… in Polymer Bulletin (1999)

Article

A novel π-conjugated polymer : poly(3,4-bis(phenylene)-3-cyclobutene-1,2-dione)

We have investigated a new 1,2-type aromatic dibromide monomer for preparing a modified π -conjugated poly(p-phenylenevinylene). A novel π -conjugated poly(p-phenylenevinylene) was prepared by dehalogenation pol...

Jae Kyun Jeong, Sung Jae Choi, Tae Hyung Rhee, Nam Choul Yang… in Polymer Bulletin (1999)

Article

Characterization of chloro-fluorinated poly(arylene ether)s for optical waveguide application

Kwansoo Han, Dong Hack Suh, Tae Hyung Rhee in Polymer Bulletin (1998)