• Journal of the Korean Applied Science and Technology
• /
• v.11 no.2
• /
• pp.93-97
• /
• 1994

A Stability to spreading solvent, which is acetonitrile, dichloromethane, benzene, chloroform, and acetonitrile-benzene (1:1, v/v) of (N-docosyl quinolinium)-TCNQ(1:2) complex was investigated by UV-visible spectrometer and was confirmed stabilized on acetonitrile, dichloromethane, and acetonitrile-benzene(1:1, v/v) for 7 hours. Using buffer solution($ph{\doteqdot}6.0$) as subphase for Langmuir-Blodgett(LB) film, it was achieved successively to fabricate the Y type LB films of (N-docosyl quinolinium)-TCNQ(1:2) complex. For the identification of deposition of (N-docosyl quinolinium)-TCNQ(1:2) complex, UV-visible spectra was recorded on HP 8452A spectrometer.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
• /
• 1999.11a
• /
• pp.143-146
• /
• 1999

In this study, Ultra-thin films of (N-ducosyl quinolinium)-TCNQ(1:2) complex were prepared on the hydrophilic substrate by Langmuir-Blodgett(LB) technique. By measure of UV-vis spectra and capacitance, deposition status was confirmed together with the thickness of natural oxidized aluminum film inside a device and dielectric constant of (N-docosyl quinolinium)-TCNQ(1:2) complex. The electrical properties of (N-docosyl 7uin7linium)-TCNQ(1:2) complex were investigated at room temperature. The conductivity of this film measured by the direction uf either vertical or horizontal axis is results in a quite different value.

• Korean Journal of Materials Research
• /
• v.9 no.12
• /
• pp.1229-1233
• /
• 1999

In this research, We fabricated Langmuir-Blodgett(LB) ultra-thin films with (N-docosyl quinolinium)- TCNQ(1:2) complex. The characteristics ${\pi}$-A isotherms were studied to find optimum conditions of deposition by varing temperature of subphase, compression speed of barrier and amount of spreading solution. Film formation was verified by measuring transfer ratio, maximum absorption of UV-vis spectra, capacitance and ellipsometry. From the results, it was concluded that the LB film formed well with molecular oder was fabricated.

• Proceedings of the Materials Research Society of Korea Conference
• /
• 1999.11a
• /
• pp.190-190
• /
• 1999

• 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

• Journal of the Korean Applied Science and Technology
• /
• v.17 no.1
• /
• pp.29-35
• /
• 2000

In this study, ultra-thin films of (N-docosyl quinolinium)-TCNQ(1:2) complex were prepared on the hydrophilic substrate by Langmuir-Blodgett(LB) technique. The characteristics of ${\pi}-A$ isotherms were studied to find optimum conditions of deposition by varying temperature of subphase, compression speed of barrier and amount of spreading solution. Using UV-vis spectra, capacitance and thickness, deposition of LB films was confirmed together with the thickness of the naturally oxidized aluminum film inside a device and dielectric constant of (N-docosyl quinolinium)-TCNQ(1:2) complex. The dielectric constant of LB film was about $4.59{\sim}5.58$. The electrical properties of (N-docosyl quinolinium)-TCNQ(1:2) complex were investigated at room temperature. The conductivity of this film measured by the direction of either vertical or horizontal axis was found to have a quite different value.

• Korean Journal of Materials Research
• /
• v.10 no.8
• /
• pp.564-568
• /
• 2000

Langmuir-Blodgett(LB) 법은 미래의 분자전자소자를 위한 가장 유력한 수단이며, 이러한 분자박막 소자는 그 성질이 분자는 배향에 영향을 박데 되므로 현재 새로운 물질을 이용하여 분자전자소자의 제작에 있어 관심을 모으고 있다. 본 연구에서는 (N-docosyl quinolinium)-TCNQ(1:2) 전하 이동 착물 LB 막의 분자 배향을 UV/vis 편광흡수 스펙트럼과 FT-IR transmission 및 reflection-absorption 스펙트럼의 흡수강도를 비교하여 정량적으로 평가하였다. 그 결과 TCNQ의 transition dipole moment의 각은 약 56~58。 였으며, 알킬 고리의 경사각은 약 11.1~13。였다. 제작된 Z-형 LB 막의 표면은 고압에서 중앙 높이 차가 3~4$\AA$으로 평탄하였다.

• Journal of the Korean Applied Science and Technology
• /
• v.18 no.1
• /
• pp.49-54
• /
• 2001

Ultra-thin films of organic charge transfer complex were prepared on a hydrophilic substrate by Langmuir-Blodgett(LB) technique. In this study, the photoelectric properties of a LB film consisting of (N-docosyl quinolinium)-TCNQ(1:2) complex was investigated. The visible light(${\lambda}$ : 700 nm) of xenon lamp was illuminated on the LB films and light absorptivity and photoconductivity were observed. The photocurrent increased linearly and was saturated at the light intensity of 23 ${\mu}W/cm^{2}$.