• Proceedings of the Materials Research Society of Korea Conference
• /
• 1999.11a
• /
• pp.189-189
• /
• 1999

• Proceedings of the Materials Research Society of Korea Conference
• /
• 1999.05a
• /
• pp.148-148
• /
• 1999

• Proceedings of the Materials Research Society of Korea Conference
• /
• 1999.05a
• /
• pp.54-54
• /
• 1999

• Proceedings of the Materials Research Society of Korea Conference
• /
• 1994.05a
• /
• pp.136-137
• /
• 1994

• Membrane Journal
• /
• v.29 no.5
• /
• pp.246-251
• /
• 2019

Facilitated transport membranes using silver nanoparticles as carriers for olefin/paraffin separation have been interested. $AgBF_4$ has been used as a precursor of silver nanoparticles in previous studies. However, relatively expensive $AgBF_4$ is not suitable for commercialization, and thus, PEBAX-5513/AgNPs (precursor: $AgClO_4$)/7,7,8,8-tetracyanoquinodimethane (TCNQ) composite membranes were prepared using silver nanopaticles with relatively inexpensive $AgClO_4$ precursors. Composite membranes of various compositions were prepared for PEBAX-5513/AgNPs/TCNQ composites, but no separation performance was observed. As a result of FT-IR analysis, it was confirmed that silver nanoparticles were formed in the PEBAX-5513 polymer and the surface of Ag nanoparticles was polarized by TCNQ, but the formed silver nanoparticles were not stabilized. From these results, it was concluded that the anion of the precursor plays an important role in the olefin/paraffin separation.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
• /
• 1990.10a
• /
• pp.108-109
• /
• 1990

For the purpose of fabricating of L-B Films, (N-alkyl pyridinium)-TCNQ(1:1) complex is synthesized. This complex is verified by U.V, I.R and elemental analyzer.

• Proceedings of the KIEE Conference
• /
• 1991.11a
• /
• pp.333-335
• /
• 1991

${\prod}-A$ characteristics and UV-visible spectrum of N-docosylquinolium-TCNQ monolayers were investigated. ${\prod}-A$ characteristics of N-docosylquinolium-TCNQ monolayer were measured following variation. i > ${\prod}-A$ characteristics with a variation of spreading amount. ii > ${\prod}-A$ characteristics with a variation of subphase temperature. An optium surface pressure for a LB Film deposition was found to be a 30, 45 mN/m in pure water subphase(pH 5.4, $25^{\circ}C$). UV-visible spectrum Analysis of these LB film were investigated. As a result, we think two kinds of surface pressure had no effect the monolayer aggregation but monolayer density.

• Membrane Journal
• /
• v.24 no.6
• /
• pp.448-452
• /
• 2014

Nanocomposite membrane to show facilitated olefin transport was prepared for enhanced separation performance. Addtion of halogen molecules into PVP/AgNPs/ TCNQ nanocomposite membrane was expected to further polarize the surface of AgNPs for enhancing the separation performance. The formation of AgNPs and presence of iodine was confirmed by TEM and EDS analysis, respectively. The separation performance for propylene/propane mixture was compared with that of PVP/AgNPs/TCNQ nanocomposite membrane. The long-term stability of membrane was investigated with time.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
• /
• 1988.10a
• /
• pp.54-57
• /
• 1988

A film is fabricated by depositing several slices ultra thin films on a slide glass. The UV-absorbance outcomed on a multi-layered bulky ultra thin film with (N-docosyl pyridinium)-TCNQ (1:2) complex results tat the quantity of UV-absorbances becomes more linearly according to the number of layer becomes higher. In addition, it is found that the capacitance of this film gets smaller as the number of layer gets higher. Finally, the conductivity of this film is measured by the direction of the long axis of the TCNQ radical anion, and is resulted in a remarkably low value (about 1.66∼3.78 x 10$\^$-14/S/cm).

• The Proceedings of the Korean Institute of Illuminating and Electrical Installation Engineers
• /
• v.11 no.3
• /
• pp.80-87
• /
• 1997

As a result of experimenting the temperature characteristics of origination voltage in Al/$AL_1,O_3/PI (nL)/Au, the sample of polyimide LB film and AI/$AL_1,O_3/Cls TCNQ(lOL)/Al, the difference of work function is found between upper and lower electrodes. If polyimide LB film is accumulated with Z type or becomes imide, the polarization of the film is not made. And AI/$AL_2,O_3/C-{15}TCNQ( IOL)/ AI which is the CI5 TCNQ LB film sample doesn't show the difference of work function because it has the same upper and lower electrode and the polarization is found on the film. As a result of experiment with MIM element of LB ultra thin film, Direct current more than hun¬dreds of m V is generated and it can be used for industrial power resources in the area of electricity, electronics and information communication.