http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
오인혁,이성민,김연우,남인호,장석태 한국고분자학회 2021 한국고분자학회 학술대회 연구논문 초록집 Vol.46 No.2
Flexible energy storage devices have been interested to apply for wearable devices. Paper is emerging as a next-generation material. Due to porosity, paper have selected to complement low energy performance of supercapacitors. We introduce a paper-based supercapacitor fabrication technology that separates two metal electordes with a hydrophobic barrier. The key point is to deposit electrode in the desired space within a single paper. Other devices that require multi-layers no longer need to increase their size. The solid-state supercapacitor device can be fabricated by infiltration of gel electrolyte. The device exhibits a capacitance 560.2 mFcm<SUP>-2</SUP> and excellent cycling performance with 95.2% retention after 2000 cycles and stability under the mechanical test. The maximum power and energy density of our device are measured to be 1.597 mWcm<SUP>-2</SUP> and 28.74 μWhcm<SUP>-2</SUP>. In this work, it can be developed for batteries or other wearable electronic devices that require the flexibility and multi-layers.
오인혁,허강무,조광재,Thanh Huyen Tran,이용규 한국고분자학회 2012 Macromolecular Research Vol.20 No.5
Heparin–retinoic acid (HR) and heparin–folic acid–retinoic acid (HFR) amphiphilic bioconjugates were synthesized for the development of an actively targeted drug delivery system for cancer therapy. The HR and HFR bioconjugates were synthesized by chemical conjugation via amide linkages of the carboxyl groups of heparin and the amine groups of aminated retinoic acid (RA) and aminated folic acid (FA). The chemical structures of HR and HFR were confirmed by proton nuclear magnetic resonance. The coupling ratio of RA to heparin could be modulated by varying the feed molar ratio of RA to heparin. In aqueous media, HR and HFR bioconjugates self-aggregated to form nanoparticles through the hydrophobic RA interactions. The size, critical aggregation concentrations, and morphologies of HR and HFR nanoparticles were evaluated using dynamic light scattering, fluorescence spectrophotometry,and scanning electron microscopy, respectively. The sizes of the HR and HFR nanoparticles ranged from 80 to 220 nm according to the coupling ratio of RA. In vitro experiments showed that the HFR nanoparticles selectively recognized a folate receptor-positive cancer cell line (KB cells) and displayed higher cytotoxicity compared to free RA and HR nanoparticles. This enhanced cytotoxicity was not observed in folate receptor-negative A549cells. In a human tumor xenograft nude mouse model, HFR nanoparticles reduced the tumor volume compared to HR nanoparticles or free RA without any signs of toxicity. These results proved that HFR nanoparticles have great potential for cancer targeting and treatment.