• 한국고분자학회:학술대회논문집
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• 한국고분자학회 2006년도 IUPAC International Symposium on Advanced Polymers for Emerging Technologies
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• pp.54-55
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• 2006

Polymeric micelles, supramolecular assemblies of block copolymers, are useful nanocarriers for the systemic delivery of drugs and genes. Recently, novel polymeric micelles with various functions such as the targetability and stimuli-sensitivity have been emerged as promising carriers that enhance the efficacy of drugs and genes with minimal side effects. This presentation focuses our recent approach to the preparation of functional block copolymers that are useful for constructing smart micellar delivery systems in advanced therapeutics, including chemo-gene therapy. Particular emphasis is placed on the characteristic behaviors of intracellular environment-sensitive micelles that selectively exert drug activity and gene expression in live cells.

• 한국진공학회:학술대회논문집
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• 한국진공학회 2014년도 제46회 동계 정기학술대회 초록집
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• pp.430.2-430.2
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• 2014

Previous studies to enhance optical properties of opto-electronic devices involve patterning of inorganic materials. Patterning of inorganic material usually encompasses vacuum process that hinders productivity and increases cost. In this research, we successfully formed nano patterns with polymer matrix and fabricated photonic crystals. This process is anticipated to increase the performance of opto-electronic devices without any vacuum process. Moreover, nano imprint technology reduces cost and bolsters productivity.

• 대한화학회지
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• 제58권1호
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• pp.39-43
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• 2014

A facile transformation of aryl aldehydes to benzyl iodides through one-pot reductive iodination is reported. This protocol displays remarkable functional group tolerance and the title compound was obtained in good to excellent yield.

• 한국고분자학회지:고분자과학과기술
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• 제17권3호
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• pp.303-311
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• 2006

• 한국고분자학회지:고분자과학과기술
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• 제21권5호
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• pp.447-458
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• 2010

• 한국고분자학회지:고분자과학과기술
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• 제25권3호
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• pp.205-213
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• 2014

• 한국고분자학회:학술대회논문집
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• 한국고분자학회 2006년도 IUPAC International Symposium on Advanced Polymers for Emerging Technologies
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• pp.153-154
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• 2006

The development of metal catalysts that can polymerize or copolymerize "polar" $Ch_2=CHX$ monomers by insertion mechanisms would significantly expand the scope of metal-catalyzed polymerization and enable the synthesis of new materials with enhanced properties. We have studied the reactions of single-site olefin polymerization catalysts with vinyl chloride, acrylonitrile, and vinyl ethers, in order to probe monomer coordination trends, insertion rates and regioselectivity, and the structures and reactivity of metal alkyls that contain functional groups on the alpha and beta positions of the alkyl chain. These studies provide insights to the key issues that underlie the "polar monomer" problem. Copolymerization of olefins and selected vinyl ethers has been achieved.

• Bulletin of the Korean Chemical Society
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• 제30권5호
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• pp.1097-1100
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• 2009

New types of conducting polyaniline-polymannuronate (PANI-PM) composites were synthesized by in situ deposition techniques in an aqueous media. By dissolving different weight percentage of polymannuronate (PM) (5, 10, 15, and 25%), the oxidative polymerization of aniline was carried out using ammonium per sulfate as an oxidant. The obtained composites were studied for their thermal stability and electrochemical behavior. The thermal stability of PANI-PM composites is lower than PANI, which supports a strong interaction between PANI and PM. However, the composites show an appreciable electrochemical behavior. Based on these observation the PANI-PM composites can be explored in different fields such as electric devices, sensors, functional coatings, etc.

• 문화기술의 융합
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• 제4권2호
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• pp.211-216
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• 2018

흡착과 막을 융합시킨 분리기술은 수처리와 같은 환경 분야에서 많은 응용이 기대된다. 이 융합기술에 막분리 공정에서 문제가 되는 막 fouling을 억제시키기 위해 막표면에 카본휘스커를 성장시킨 기능성 카본막을 개발하였다. 본 연구에서는 기능성 카본막의 제조 Mechanism을 밝히기 위해, 각각의 혼합비율인 폴리머라텍스로 전처리를 하고 CVD(Chemical Vapor Deposing)법에 따라 막을 제조하였다. 이 막을 주사전자현미경(Scanning Electron Microscope(SEM)), CHN분석기(Elemental Analyzer), X-선회절법(X-Ray Diffraction(XRD))으로 분석하였다. 그 결과 3번막(PVdC(PolyVinyl di-Chloride):PVC(Polyvinly Chloride)=4.5:55)의 경우가 카본휘스커의 직경과 밀도가 높았다. 이것은 폴리머라텍스의 수소함유량에 따라 카본휘스커의 직경과 밀도를 조절하는 것이 가능할 것으로 보인다.

• 센서학회지
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• 제11권6호
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• pp.335-341
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• 2002

측면연마된 광섬유와 광기능성 색소가 분산된 평면도파로 결합기를 이용한 새로운 형태의 자외선 센서를 제작하여 그 특성을 측정하였다. 자외선 조사에 의해 유효굴절률이 변화하는 광변색성 색소가 분산된 폴리머를 평면 도파로 재료로 사용하였다. 박막 광도파로는 광변색성 색소인 스파이록사진을 사용하였다. 자외선 조사시간을 20초, 30초, 40초로 증가시켰을 경우 센서의 파장응답은 1.44nm/mW, 1.64nm/mW, 1.78nm/mW였고 1550nm 파장에서 센서의 90% 복귀시간은 100초로 나타났다.