• 공업화학
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• 제31권5호
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• pp.467-474
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• 2020

고분자태양전지는 용액공정에 의한 생산이 가능하여, 경량, 저비용, 기계적 유연성 및 고효율과 같은 많은 이점이 있다. 이들은 지난 수십 년 동안 많은 관심을 끌어왔다. 공액 고분자 전해질(conjugated polymer electrolyte, CPE) 및 비공액 고분자 전해질(non-conjugated polymer electrolyte, NPE) 재료는 기존의 금속 산화물 중간층과 관련된 일반적인 약점(전하 수집능력 저하 및 금속/고분자 계면에서의상용성 저하 등)을 극복하기 위해 사용되었다. 그러나 CPE의 합성은 매우 복잡한 합성과정이 필요하며, 대량합성이 어려운 단점이 있다. 따라서 상대적으로 합성이 용이한 NPE를 개발 혹은 기존에 개발되어 있는 NPE를 이용하면 보다 쉽게 단점을 극복할 수 있다. 이온 그룹이 포함되어 있는 경우 NPE는 특히 고분자 태양전지를 구현함에 있어 많은 이점을 제공할 수 있으며, 이에 본 총설에서는 그 동안 개발 혹은 응용되었던 NPE에 대한 내용을 다루었다.

• 한국진공학회:학술대회논문집
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• 한국진공학회 2016년도 제50회 동계 정기학술대회 초록집
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• pp.151.2-151.2
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• 2016

We characterized the n-type organic field-effect transistors (OFETs) with non-conjugated polyelectrolytes (NPEs) interlayers as the electron injection layer. Novel NPEs with various ions (Cl-, Br-, I-) improved the electron mobility from $5.06{\times}10^{-3}$ to $2.10{\times}10^{-2}cm^2V^{-1}s^{-1}$ in OFETs based [6,6]-Phenyl-$C_{61}$-butyric acid methyl ester (PCBM) when $PEIEH^+I^-$ spin-cast from 0.6% solution was deposited onto the PCBM layer. Reduced electron injection barrier (${\phi}_e$) at NPE/metal electrode interface was induced by dipole formation and led to increase the electron injection and transport. These findings are important for understanding how NPEs function in devices, the improvement of device performance, and the design of new materials for use in optoelectronic devices.

• Asian Pacific Journal of Cancer Prevention
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• 제17권4호
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• pp.2277-2284
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• 2016

Ribosome-inactivating protein (RIP) from Mirabilis jalapa L. leaves has cytotoxic effects on breast cancer cell lines but is less toxic towards normal cells. However, it can easily be degraded after administration so it needs to be formulated into nanoparticles to increase its resistance to enzymatic degradation. The objectives of this study were to develop a protein extract of M. jalapa L. leaves (RIP-MJ) incorporated into nanoparticles conjugated with Anti-EpCAM antibodies, and to determine its cytotoxicity and selectivity in the T47D breast cancer cell line. RIP-MJ was extracted from red-flowered M. jalapa L. leaves. Nanoparticles were formulated based on polyelectrolyte complexation using low viscosity chitosan and alginate, then chemically conjugated with anti-EpCAM antibody using EDAC based on carbodiimide reaction. RIP-MJ nanoparticles were characterised for the particle size, polydispersity index, zeta potential, particle morphology, and entrapment efficiency. The cytotoxicity of RIP-MJ nanoparticles against T47D and Vero cells was then determined with MTT assay. The optimal formula of RIP-MJ nanoparticles was obtained at the concentration of RIP-MJ, low viscosity chitosan and alginate respectively 0.05%, 1%, and 0.4% (m/v). RIP-MJ nanoparticles are hexagonal with high entrapment efficiency of 98.6%, average size of 130.7 nm, polydispersity index of 0.380 and zeta potential +26.33 mV. The $IC_{50}$ values of both anti-EpCAM-conjugated and non-conjugated RIP-MJ nanoparticles for T47D cells (13.3 and $14.9{\mu}g/mL$) were lower than for Vero cells (27.8 and $33.6{\mu}g/mL$). The $IC_{50}$ values of conjugated and non-conjugated RIP-MJ for both cells were much lower than $IC_{50}$ values of non-formulated RIP-MJ (>$500{\mu}g/mL$).