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김호겸,김재명,손동구,황윤숙,윤태현,최현균,유대승,H.K. Kim,J.M. Kim,D.K. Shon,Y.S. Hwang,T.H. Yoon,H.K. Choi,D.S. Yoo 한국전자통신연구원 2023 전자통신동향분석 Vol.38 No.6
Smart manufacturing in Industry 4.0 is developing toward autonomous manufacturing as a last-mile technology. We investigate development trends in manufacturing innovation technologies, review major industrial intelligence projects currently carried out at ETRI, and infer directions of future technology developments.
김호겸,박종욱 한국공업화학회 2019 한국공업화학회 연구논문 초록집 Vol.2019 No.0
The electrochemical and electrooptical properties of a self-dopable ionic conjugated polyacetylene, poly(2-ethynylpyridinium-N-benzoylsulfonate) (PEPBS), were studied. The photoluminescence spectra of the polymer showed that the photoluminescence peak was located at 545 nm corresponding to the photon energy of 2.27 eV. The cyclic voltammograms of the polymer exhibited reversible electrochemical behaviors between the doped and undoped peaks. It was found from the dependence of the oxidation current density of the polymer on scan rate that the kinetics of the redox process was diffusion-controlled. The electrical conductivity (σ) of undoped PEPBS was 5.7×10-9 S/cm
조리 관련 직업전문학교 학생들이 지각하는 교육서비스품질이 학습전이와 자발적 행동의도에 미치는 영향에 있어 전이 동기의 조절 효과에 관한 연구
김호겸,최우성 관광경영학회 2020 관광경영연구 Vol.96 No.-
In order to establish the educational services focused on consumers, it is necessary to perform the studies on the marketing-oriented core concepts such as education service quality, learning transfer, satisfaction in education and voluntary behavioral intention from the students’ perspectives. In this context, this study identified the effect of educational service quality perceived by the students, who had a class at vocational training institutes involved in cooking, on both learning transfer and voluntary behavioral intention. Furthermore, this study elucidated the regulating effect of motivation to transfer. The following results were derived. Firstly, the higher the education service quality was perceived, the higher the learning transfer appeared. Secondly, it appeared that the learning transfer becomes higher if the students perceive lecture program, educational circumstance and educational services among the education srvice quality as well as the motivation to transfer simultaneously. Thirdly, it was exhibited that participation intention, cooperation intention and royalty became higher as an increase of perception on learning transfer.
Synthesis and lectroluminescence Property of diazocine derivatives
김호겸,박종욱 한국공업화학회 2020 한국공업화학회 연구논문 초록집 Vol.2020 No.-
Four new diazocine derivatives including anthracene moiety, 2,8-Bis-[3-(10-naphthalen-2-yl-anthracen-9-yl)-phenyl]-6H,12H-5,11-methanodi benzo[b,f][1,5]diazocine(AK14), 2,8-Bis-[2-(10-naphthalen-2-yl-anthra cen-9-yl)-phenyl]-6H,12H-5,11-methano-dibenzo[b,f][1,5]diazocine(A K15), 2,8-Bis-[4-(10-phenyl-anthracen-9-yl)-phenyl]-6H,12H-5,11-met hano-dibenzo[b,f][1,5]diazocine(AK20), 2,8-Bis-[2-(10-phenyl-anthrac en-9-yl)-phenyl]-6H,12H-5,11-methano-dibenzo[b,f][1,5]diazocine(AK 21) were synthesized. Those materials exhibited photoluminescence (PL) maximum value of about 411∼428 nm in solution state and 429∼483 nm in film state, respectively. Four compounds were used as EML in OL ED device: ITO / 2-TNATA (60 nm) /NPB (15 nm) / EML(35 nm) / Alq3 (20 nm) / LiF / Al. OLED devices, fabricated by AK14, AK20 and AK21, showed the current efficiency with 2.16cd/A, 0.28cd/A and 1.56cd/A. The OLED device, fabricated by AK15, showed the best performance with 2.83cd/A, 1.25lm/W and CIE(x,y) = (0.16, 0.23).
Synthesis of yellow synergist based on pigment yellow 74 for inkjet
김호겸,박종욱 한국공업화학회 2020 한국공업화학회 연구논문 초록집 Vol.2020 No.-
New yellow synergist was synthesized for pigment dispersion in pigment ink. 1,4-Butanesultone was applied to Pigment Yellow74 (PY74) as a hydrophilic functional group in order to synthesize 4-[{2-[(2-Methoxy-4-nitro-phenyl)-(4-sulfo-butyl)-hydrazono]-1-meth ylene-3-oxo-butyl}-(2-methoxy-phenyl)-amino]-butane-1-sulfonic acid (PY74ASA-2). Whereas pigment showed extremely low solubility in water and organic solvents such as DMSO, DMF and methanol, the synergist was found to have higher solubility than pigment. This result can be interpreted as reduction of particle aggregation by increasing polarity. This synergist applied to pigment ink is expected to improve dispersion property and storage stability of ink.
Synthesis and Electrooptical Properties of New Conjugated Bithiazole-Containing Polymers
김호겸,박종욱 한국공업화학회 2019 한국공업화학회 연구논문 초록집 Vol.2019 No.0
Three new bithiazole-based conjugated copolymers were synthesized and characterized. The EL device using PNBTV as the emitting layer showed red electroluminescence at 641 nm with a peak luminance of ca. 160 cd/m2 (0.008 cd/A). The red electroluminescence was attributed to the formation of excimers between the polymer chains. An EL device using PNBTV6as the emitting material, which had two n-hexyl groups introduced to the phenylene in the main chain of PNBTV, showed a reddish orange emission that was blue shifted by approximately 52 nm compared with that observed with PNBTV. This observation was attributed to the significant decrease in interactions between the chains of the polymers due to the two bulky n-hexyl groups. On the other hand, PNBTV6w as found to have superior hole transporting ability compared with its electron transporting ability.