Pub Date : 2001-10-01DOI: 10.1080/10587250108030116
Ok-Byoung Kim, Yunseok Kim, Young Kwan Kim, Jung-soo Kim
Abstract Organic thin film transistors were fabricated using pentacene and organic gate insulator on the glass substrates. Polyimide and photo-acryl were used as a gate insulator respectively. We investigated transfer and output characteristics of the thin film transistors(TFT's) having active layer of pentacene. We calculated field effect mobility and on/off ratio from transfer characteristics of pentacene TFT's, and measured IR absorption spectrum of polyimide used as gate insulator.
{"title":"Pentacene Thin Film Transistor Using Organic Material as a Gate Insulator","authors":"Ok-Byoung Kim, Yunseok Kim, Young Kwan Kim, Jung-soo Kim","doi":"10.1080/10587250108030116","DOIUrl":"https://doi.org/10.1080/10587250108030116","url":null,"abstract":"Abstract Organic thin film transistors were fabricated using pentacene and organic gate insulator on the glass substrates. Polyimide and photo-acryl were used as a gate insulator respectively. We investigated transfer and output characteristics of the thin film transistors(TFT's) having active layer of pentacene. We calculated field effect mobility and on/off ratio from transfer characteristics of pentacene TFT's, and measured IR absorption spectrum of polyimide used as gate insulator.","PeriodicalId":18940,"journal":{"name":"Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals","volume":"16 1","pages":"403 - 406"},"PeriodicalIF":0.0,"publicationDate":"2001-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72718647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2001-10-01DOI: 10.1080/10587250108030106
Yong-Sung Choi, Do-Kyun Kim, Young-Soo Kwonb
Abstract In this paper, we describe a new approach for an arrangement of many kinds of DNAs on transducers to construct a DNA microarray. A high-density array of sensor probes was prepared by randomly distributing a mixture of particles immobilized with various DNAs. A process for immobilization of the DNAs was separated from the assembly of the particles. The particles were arranged on the chip pattern by random fluidic self-assembly, using hydrophobic interaction.
{"title":"New Technology for DNA Chips on a Microarray-Random Fluidic Self-assembly Method Using Hydrophobic Interaction","authors":"Yong-Sung Choi, Do-Kyun Kim, Young-Soo Kwonb","doi":"10.1080/10587250108030106","DOIUrl":"https://doi.org/10.1080/10587250108030106","url":null,"abstract":"Abstract In this paper, we describe a new approach for an arrangement of many kinds of DNAs on transducers to construct a DNA microarray. A high-density array of sensor probes was prepared by randomly distributing a mixture of particles immobilized with various DNAs. A process for immobilization of the DNAs was separated from the assembly of the particles. The particles were arranged on the chip pattern by random fluidic self-assembly, using hydrophobic interaction.","PeriodicalId":18940,"journal":{"name":"Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals","volume":"293 ","pages":"363 - 366"},"PeriodicalIF":0.0,"publicationDate":"2001-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/10587250108030106","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72494757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2001-10-01DOI: 10.1080/10587250108030104
O. Karthaus, H. Yabu, Takeo Koito, K. Akagi, M. Shimomura
Abstract Annealing dewetted films of smectic polymers in their mesophase, a peculiar surface structure was observed by polarizing microscopy and atomic force microscopy. The surface structure, which develops independent from the substrate, consists of micron-size shallow dimples that are a few nanometer in depth. The lateral spacing of the dimples, which arrange in a hexagonal lattice, is directly proportional to the thickness of the dot. Based up on in situ video imaging of the dimple formation dynmic a mechanism is proposed.
{"title":"Substrate Effect on the Surface Structures of Liquid Crystalline Polymers","authors":"O. Karthaus, H. Yabu, Takeo Koito, K. Akagi, M. Shimomura","doi":"10.1080/10587250108030104","DOIUrl":"https://doi.org/10.1080/10587250108030104","url":null,"abstract":"Abstract Annealing dewetted films of smectic polymers in their mesophase, a peculiar surface structure was observed by polarizing microscopy and atomic force microscopy. The surface structure, which develops independent from the substrate, consists of micron-size shallow dimples that are a few nanometer in depth. The lateral spacing of the dimples, which arrange in a hexagonal lattice, is directly proportional to the thickness of the dot. Based up on in situ video imaging of the dimple formation dynmic a mechanism is proposed.","PeriodicalId":18940,"journal":{"name":"Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals","volume":"53 1","pages":"353 - 358"},"PeriodicalIF":0.0,"publicationDate":"2001-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75953728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2001-10-01DOI: 10.1080/10587250108030093
Byoung-Suhk Kim, Dong Jun Lee, Sung-Kyu Min, Young‐Jun Kim, S. Kim, D. Yoon, H. Rhee
Abstract Star-shaped polycaprolactones (PCL) with 4- or 5-arms were synthesized to be used as a porogen for nanoporous dielectric materials. Methylsilsesquioxane (MSSQ) was used as an inorganic matrix. Miscibility with MSSQ strongly depended on the molecular weight of the porogens used. Dielectric constants of the nanoporous thin films were measured using MIS cell configuration.
{"title":"Miscibility and Nanoporous Hybrid Film Fabrication of Methylsilsesquioxane (MSSQ) and Star-shaped Polymers","authors":"Byoung-Suhk Kim, Dong Jun Lee, Sung-Kyu Min, Young‐Jun Kim, S. Kim, D. Yoon, H. Rhee","doi":"10.1080/10587250108030093","DOIUrl":"https://doi.org/10.1080/10587250108030093","url":null,"abstract":"Abstract Star-shaped polycaprolactones (PCL) with 4- or 5-arms were synthesized to be used as a porogen for nanoporous dielectric materials. Methylsilsesquioxane (MSSQ) was used as an inorganic matrix. Miscibility with MSSQ strongly depended on the molecular weight of the porogens used. Dielectric constants of the nanoporous thin films were measured using MIS cell configuration.","PeriodicalId":18940,"journal":{"name":"Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals","volume":"84 1","pages":"301 - 304"},"PeriodicalIF":0.0,"publicationDate":"2001-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76792416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2001-10-01DOI: 10.1080/10587250108030021
K. Rajalakshmi, V. Pattabhi, C. S. Venkatesan, G. Nadamuni, A. Srikrishna
Abstract The title compound I (24-(S)-Hydroxy Coprastan-3-one) crystallises in orthorhombic space group P212121 with Z=4. The unit cell dimensions are a=6.701(2)Å, b=11.506(8)Å, c=32.183(4)Å, V=2481(2)Å3, Dcal=1.077 Mg/m3. The title compound II (24-(R)-Hydroxy Coprastan-3-one) crystallises in orthorhombic space group P212121 with two molecules per assymetric unit and with Z=8. The Unit cell dimensions are a=10.954(2)Å, b=21.757(6)Å, c=21.130(7)Å, V=5035.0(2)Å3, Dcal=1.062 Mg/m3. In compound I and in both the molecules of compound II, the rings A, B & C are in chair conformation and the five membered ring D is in envelope conformation. The priority sequence attached to the chiral carbon C24 has “S” designation in compound I and “R” designation in compound II. The structures are stabilized by C-H…O and O-H—O hydrogen bonds.
{"title":"Crystal and Molecular Structure of Synthetic Cholesterol Compounds — Vitamin D3-Analogues (I) 24(S)-Hydroxy Coprastan-3-one & (II) 24(R)-Hydroxy Coprastan-3-one","authors":"K. Rajalakshmi, V. Pattabhi, C. S. Venkatesan, G. Nadamuni, A. Srikrishna","doi":"10.1080/10587250108030021","DOIUrl":"https://doi.org/10.1080/10587250108030021","url":null,"abstract":"Abstract The title compound I (24-(S)-Hydroxy Coprastan-3-one) crystallises in orthorhombic space group P212121 with Z=4. The unit cell dimensions are a=6.701(2)Å, b=11.506(8)Å, c=32.183(4)Å, V=2481(2)Å3, Dcal=1.077 Mg/m3. The title compound II (24-(R)-Hydroxy Coprastan-3-one) crystallises in orthorhombic space group P212121 with two molecules per assymetric unit and with Z=8. The Unit cell dimensions are a=10.954(2)Å, b=21.757(6)Å, c=21.130(7)Å, V=5035.0(2)Å3, Dcal=1.062 Mg/m3. In compound I and in both the molecules of compound II, the rings A, B & C are in chair conformation and the five membered ring D is in envelope conformation. The priority sequence attached to the chiral carbon C24 has “S” designation in compound I and “R” designation in compound II. The structures are stabilized by C-H…O and O-H—O hydrogen bonds.","PeriodicalId":18940,"journal":{"name":"Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals","volume":"28 1","pages":"243 - 271"},"PeriodicalIF":0.0,"publicationDate":"2001-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80309463","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2001-10-01DOI: 10.1080/10587250108030075
S. Kuwajima, Y. Okada, Y. Yoshida, K. Abe, Tomohiko Yamaguchi, H. Nagasawa, N. Tanigaki, E. Sakurai, K. Yase
Abstract The multilayers structures of silver nanoparticles passivated with a fatty acid are investigated by means of X-ray reflectivity (XR) measurement. A distinct “quasi-Bragg reflection” peak appears at the position corresponding to the layer distance. From the calculation, it is found that the layer distance is slightly smaller than the diameter of the nanoparticle.
{"title":"Effect of 3-dimensional Stacking for Silver Nanoparticle Multilayers","authors":"S. Kuwajima, Y. Okada, Y. Yoshida, K. Abe, Tomohiko Yamaguchi, H. Nagasawa, N. Tanigaki, E. Sakurai, K. Yase","doi":"10.1080/10587250108030075","DOIUrl":"https://doi.org/10.1080/10587250108030075","url":null,"abstract":"Abstract The multilayers structures of silver nanoparticles passivated with a fatty acid are investigated by means of X-ray reflectivity (XR) measurement. A distinct “quasi-Bragg reflection” peak appears at the position corresponding to the layer distance. From the calculation, it is found that the layer distance is slightly smaller than the diameter of the nanoparticle.","PeriodicalId":18940,"journal":{"name":"Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals","volume":"246 1","pages":"223 - 226"},"PeriodicalIF":0.0,"publicationDate":"2001-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75754701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2001-10-01DOI: 10.1080/10587250108030098
Y. Park, T. B. Ahn
Abstract The effect of subphase pH on the surface pressure-area isotherms and the variation of transfer ratio according to the stroke number were investigated for the monolayers of ω -tricosenyl alcohol and ω - tricosenoic acid. The monolayer of ω -tricosenyl alcohol showed more stable spreading behaviors and more efficient deposition than that of ω tricosenoic acid.
{"title":"Comparison of Monolayer Behaviors between ω - Tricosenyl Alcohol and ω - Tricosenoic Acid","authors":"Y. Park, T. B. Ahn","doi":"10.1080/10587250108030098","DOIUrl":"https://doi.org/10.1080/10587250108030098","url":null,"abstract":"Abstract The effect of subphase pH on the surface pressure-area isotherms and the variation of transfer ratio according to the stroke number were investigated for the monolayers of ω -tricosenyl alcohol and ω - tricosenoic acid. The monolayer of ω -tricosenyl alcohol showed more stable spreading behaviors and more efficient deposition than that of ω tricosenoic acid.","PeriodicalId":18940,"journal":{"name":"Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals","volume":"6 1","pages":"321 - 325"},"PeriodicalIF":0.0,"publicationDate":"2001-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80489747","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2001-10-01DOI: 10.1080/10587250108030023
A. Karakashian
(2001). A Review of “Principles of Condensed Matter Physics” by P.M. Chaikin and T.C. Lubensky, Cambridge University Press, Cambridge, U.K., 2000, ISBN 0 521 79450 1(paperback); $47,95. Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals: Vol. 369, No. 1, pp. 275-275.
{"title":"A Review of “Principles of Condensed Matter Physics” by P.M. Chaikin and T.C. Lubensky, Cambridge University Press, Cambridge, U.K., 2000, ISBN 0 521 79450 1(paperback); $47,95","authors":"A. Karakashian","doi":"10.1080/10587250108030023","DOIUrl":"https://doi.org/10.1080/10587250108030023","url":null,"abstract":"(2001). A Review of “Principles of Condensed Matter Physics” by P.M. Chaikin and T.C. Lubensky, Cambridge University Press, Cambridge, U.K., 2000, ISBN 0 521 79450 1(paperback); $47,95. Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals: Vol. 369, No. 1, pp. 275-275.","PeriodicalId":18940,"journal":{"name":"Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals","volume":"8 1","pages":"275 - 275"},"PeriodicalIF":0.0,"publicationDate":"2001-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81912561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2001-10-01DOI: 10.1080/10587250108024779
K. Jung, Jiye Moon, D. Song, D. Shin
Abstract The photo-alignment with the linear-polarized UV (LP-UV) light was applied to the surface modified polyimide film with chalcone derivatives for the vertical alignment of liquid crystal molecules. The LP-UV light irradiation caused either dimerization or isomerization of chalcone derivatives. The long alkyl-chains attached on the chalcone derivatives were aligned homeotropically and so are LC-molecules.
{"title":"Application of Photo-Alignment Technique through the Modification of the Polyimide Surface with Chalcone Derivatives to Vertically Aligned LCD","authors":"K. Jung, Jiye Moon, D. Song, D. Shin","doi":"10.1080/10587250108024779","DOIUrl":"https://doi.org/10.1080/10587250108024779","url":null,"abstract":"Abstract The photo-alignment with the linear-polarized UV (LP-UV) light was applied to the surface modified polyimide film with chalcone derivatives for the vertical alignment of liquid crystal molecules. The LP-UV light irradiation caused either dimerization or isomerization of chalcone derivatives. The long alkyl-chains attached on the chalcone derivatives were aligned homeotropically and so are LC-molecules.","PeriodicalId":18940,"journal":{"name":"Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals","volume":"54 1","pages":"443 - 446"},"PeriodicalIF":0.0,"publicationDate":"2001-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87036068","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2001-10-01DOI: 10.1080/10587250108024766
Jeong-woo Choi, Sei-Jeong Park, B. Oh, W. Lee, M. Fujihira
Abstract To make a molecular assembly of cytochrome c onto the Au substrate, the cytochrome c was modified using the 2-succinimidyl-3-(2-pyridyldi-th-io)propionate(SPDP), so the functional group on the cytochrome c surface was modified. And the modified cytochrome c was adsorbed onto the Au substrate. The modified cytochrome c was examined by using UV-visible spectroscopy and FT-IR. Also, the morphology of cytochrome c adsorbed onto the Au substrate was analyzed by Atomic Force Microscopy(AFM).
{"title":"Modification of Functional Group on the Cytochrome c Using SPDP Method","authors":"Jeong-woo Choi, Sei-Jeong Park, B. Oh, W. Lee, M. Fujihira","doi":"10.1080/10587250108024766","DOIUrl":"https://doi.org/10.1080/10587250108024766","url":null,"abstract":"Abstract To make a molecular assembly of cytochrome c onto the Au substrate, the cytochrome c was modified using the 2-succinimidyl-3-(2-pyridyldi-th-io)propionate(SPDP), so the functional group on the cytochrome c surface was modified. And the modified cytochrome c was adsorbed onto the Au substrate. The modified cytochrome c was examined by using UV-visible spectroscopy and FT-IR. Also, the morphology of cytochrome c adsorbed onto the Au substrate was analyzed by Atomic Force Microscopy(AFM).","PeriodicalId":18940,"journal":{"name":"Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals","volume":"10 1","pages":"387 - 390"},"PeriodicalIF":0.0,"publicationDate":"2001-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90340136","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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