• Bulletin of the Korean Chemical Society
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• v.24 no.11
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• pp.1695-1698
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• 2003

• YAKHAK HOEJI
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• v.34 no.4
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• pp.244-251
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• 1990

N-Monoalkylations of ditertiary diamines succeed best in nitromethane or ethanol at low temperature. Unsymmetrical 1,2-diaminoethane, 1,3-diaminopropane and piperazine compounds react selectively under these conditions at the sterically less hindered nitrogen atom.

• Textile Coloration and Finishing
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• v.3 no.3
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• pp.29-33
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• 1991

Some ir absorbing nickel complex dyes were synthesized by the reaction of phenylene diamines, 2-aminobenzenethiols and 2-aminobenzene selenols, tetrathiols with nickel (II) chloride. These dyes absorbed ir light, but those from phenylene diamines absorbed at 780-800 nm which is the most favorable wavelength region for semiconductor laser optical recording dye medium.

• Bulletin of the Korean Chemical Society
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• v.3 no.2
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• pp.76-78
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• 1982

Ethanolic tetracarbonylhydridoferrate solution combined with glutaraldehyde is a very effective reducing agent for the selective transformation of two moles of secondary amines into pentane-1,5-diamine derivatives. A variety of aliphatic secondary amines react with ferrate-glutaraldehyde at room temperature under carbon monoxide to give the corresponding N-substituted pentane-1,5-diamines in reasonable yields.

• Bulletin of the Korean Chemical Society
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• v.23 no.10
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• pp.1483-1486
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• 2002

• Bulletin of the Korean Chemical Society
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• v.21 no.5
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• pp.526-528
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• 2000

• 한국정보디스플레이학회:학술대회논문집
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• 2004.08a
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• pp.1188-1192
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• 2004

Polyamic acid precursors were prepared by mixing various main chain dianhydrides, main chain diamines and side chain diamines. Copolyimide films with alkylcyclohexylbenzene as a side chain were prepared by thermal imidization of polyamic acid precursors. Pretilt angles on rubbed polyimides changed according to the side chain and main chain structures of the polyimide. Consequently, we found that LC pretilt angles of polyimide films with a liquid crystal structure as a side chain showed to be approximately 90$^{\circ}$ when a linear and rigid polyimide main chain and a side chain of suitable length were employed.

• Bulletin of the Korean Chemical Society
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• v.32 no.4
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• pp.1133-1137
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• 2011

Ordered array of gold nanoparticles (Au NPs) over ITO glass was investigated in terms of ITO pretreatment, particle size, and diamines with different chain length. Owing to the indium-tin-oxide (ITO) layer coated on the glass, the substrate surface has a limited number of hydroxyl groups which can produce functionalized amine groups for Au binding, which resulted in the loosely-packed array of Au NPs on the ITO surface. Diamine ligand as a molecular linker was introduced to enhance the lateral binding of adjacent Au NPs immobilized on the amine-functionalized ITO glass, consequently leading to the densely-packed array of Au NPs over the ITO substrate. The molecular bridging effect was strengthened with the increase of chain length of diamines: C-12 > C-8. The packing density of small Au NPs (< 40 nm) was significantly increased with the increase of C-8 diamine, but large Au NPs (> 60 nm) did not produce densely-packed array on the ITO glass even for the dosage of C-12 diamine.

• Journal of Biomedical Engineering Research
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• v.8 no.2
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• pp.135-144
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• 1987

Polyamide microcapsules were designed for a sustained drug release. As a model, riboflavin was e no apsulated in polyamide microcapsules. Polyamide microcapsules were prepared from thiamines and acid bichlorides by the interfacial polycondensation reaction. The diamines used in ttlis works were ethylenediamine and 1, 6-hexamethylenediamine. Sebacoylchloride and teruphthaloylchloride were employed as acid bichlorides. The following parameters were studied; the release of several kinds of polyamide microcapsules , the various concentrations of diamines and acid dichlorides ; the various concentrations of surfactants : the various pH range of sink solution during the dissolution test. The release amount of riboflavin from aromatic polyamide micrcapsule was higher than that of aliphatic polyamide microcapsule The release rate of riboflavin from the polyamide microcapsule was decreased with increase of concentration of thiamines, arid dichlorides and surfactants which is used for preparing polyamide microcapsule. Release riboflavin from polyamide microcapsule was lower at pH 7 than pH 2 in sink-solution for dissolution test.

• 한국정보디스플레이학회:학술대회논문집
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• 2005.07a
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• pp.389-392
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• 2005

Poly(amic acid) precursors were prepared by mixing various main chain dianhydrides, main chain diamines and side chain diamines. The side chain diamine has an alkylbicyclohexyl group as a side chain. The copolyimide films, produced by casting the poly (amic acids) solution, exhibited the vertical alignment property without the rubbing process in the range of the curing themperature from $90^{\circ}C$ to $240^{\circ}C$ for 1h. The thermal and surface properties of the poly(amic acids) depending on the curing temperature was examined.