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: 10.1080/10587250108030021
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: 10.1080/10587250108030103
Kazutoshi Kobayashi, Mamoru Hatakeyama, Y. Toshima, Y. Tamada
Abstract A group of molecules extracted from the labial palpus of fly was reconstituted into plannar bilayer membranes and liposomes to construct the taste sensors. The existence of sodium ion channel in the extract of the labial palpus of fly was recognized by the plannar bilayer membrane experiment. Fluorescent dye, Di-8-ANEPPS, which is very sensitive to the change to the membrane potential, was used to clarif the availability of this system for sensor applications. The fluorescence intensity of liposomes was proportional to the concentration of salt solution (membrane potential) added as stimulative substances. Addition of tetrodotoxin (sodium channel blocker) revealed that sodium ion channel in the extract of the labial palpus of fly was successfully reconstituted into liposome.
{"title":"Response by Bylayer Membranes Containing the Labial Palpus of Fly to Stimulative Substances","authors":"Kazutoshi Kobayashi, Mamoru Hatakeyama, Y. Toshima, Y. Tamada","doi":"10.1080/10587250108030103","DOIUrl":"https://doi.org/10.1080/10587250108030103","url":null,"abstract":"Abstract A group of molecules extracted from the labial palpus of fly was reconstituted into plannar bilayer membranes and liposomes to construct the taste sensors. The existence of sodium ion channel in the extract of the labial palpus of fly was recognized by the plannar bilayer membrane experiment. Fluorescent dye, Di-8-ANEPPS, which is very sensitive to the change to the membrane potential, was used to clarif the availability of this system for sensor applications. The fluorescence intensity of liposomes was proportional to the concentration of salt solution (membrane potential) added as stimulative substances. Addition of tetrodotoxin (sodium channel blocker) revealed that sodium ion channel in the extract of the labial palpus of fly was successfully reconstituted into liposome.","PeriodicalId":18940,"journal":{"name":"Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals","volume":"19 1","pages":"347 - 352"},"PeriodicalIF":0.0,"publicationDate":"2001-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82058582","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: 10.1080/10587250108024687
Hasuck Kim, Jandee Kim, Jongseo Park, K. Kim, S. Ahn, T. Chung, Suk-Kyu Chang
Abstract Quinone-functionalized calix[4]arenes with carboxylic acid groups or disulfide group were prepared and their spontaneous adsorption respectively on silver and gold surface was studied. Since the cavity-like structure of calixarenes was immobilized, they exhibited selective affinity towards specific metal ions in aqueous media. Voltammetric as well as EQCM and spectroscopic studies showed the well-ordered deposition of organic receptors and entrapment of metal ions. And it also was found that the repeated capture and removal of metal ions reversibly with chelating agents such as ethylenediaminetetraacetic acid (EDTA) was possible. This is the first example, in our knowledge, of voltammetric detection of metal ions in aqueous media using a chemically modified electrode with redoxactive macrocyclic receptors.
{"title":"Electrochemical Recognition of Ions with Self-assembled Monlayers of Calixarenes","authors":"Hasuck Kim, Jandee Kim, Jongseo Park, K. Kim, S. Ahn, T. Chung, Suk-Kyu Chang","doi":"10.1080/10587250108024687","DOIUrl":"https://doi.org/10.1080/10587250108024687","url":null,"abstract":"Abstract Quinone-functionalized calix[4]arenes with carboxylic acid groups or disulfide group were prepared and their spontaneous adsorption respectively on silver and gold surface was studied. Since the cavity-like structure of calixarenes was immobilized, they exhibited selective affinity towards specific metal ions in aqueous media. Voltammetric as well as EQCM and spectroscopic studies showed the well-ordered deposition of organic receptors and entrapment of metal ions. And it also was found that the repeated capture and removal of metal ions reversibly with chelating agents such as ethylenediaminetetraacetic acid (EDTA) was possible. This is the first example, in our knowledge, of voltammetric detection of metal ions in aqueous media using a chemically modified electrode with redoxactive macrocyclic receptors.","PeriodicalId":18940,"journal":{"name":"Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals","volume":"34 1","pages":"57 - 62"},"PeriodicalIF":0.0,"publicationDate":"2001-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78540313","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: 10.1080/10587250108030017
H. C. Devarajegowda, M. A. Sridhar, J. S. Prasad, J. Indira, B. Sooryanarayanarao, P. Karat
Abstract The crystal and molecular structure of 1-(4-methoxyphenyl)-3-(phenyl)-2-propen-1-one derivative is determined by X-ray diffraction method. The compound, C16H14O2, crystallises in the orthorhombic space group Pbca with a=10.921(2) Å, b=30.583(1) Å, c=7.535(3) Å, V=2516.7(9) Å3, Z=4, D calc=1.242 Mg/m3, μ=0.327 mm−1, F 000=504, λ(MoKα)=0.71069 Å and the structure was refined to R=0.044.
{"title":"Crystal Structure of a Chalcone Derivative","authors":"H. C. Devarajegowda, M. A. Sridhar, J. S. Prasad, J. Indira, B. Sooryanarayanarao, P. Karat","doi":"10.1080/10587250108030017","DOIUrl":"https://doi.org/10.1080/10587250108030017","url":null,"abstract":"Abstract The crystal and molecular structure of 1-(4-methoxyphenyl)-3-(phenyl)-2-propen-1-one derivative is determined by X-ray diffraction method. The compound, C16H14O2, crystallises in the orthorhombic space group Pbca with a=10.921(2) Å, b=30.583(1) Å, c=7.535(3) Å, V=2516.7(9) Å3, Z=4, D calc=1.242 Mg/m3, μ=0.327 mm−1, F 000=504, λ(MoKα)=0.71069 Å and the structure was refined to R=0.044.","PeriodicalId":18940,"journal":{"name":"Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals","volume":"33 1","pages":"145 - 152"},"PeriodicalIF":0.0,"publicationDate":"2001-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78768440","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: 10.1080/10587250108024681
Jin Matsumoto, K. Ijiro, M. Shimomura
Abstract Pressure-area isotherms of ternary component monolayers of nucleobase amphiphiles, octadecylcytosine (C18-Cyt) and diacetylene-containing adenine and thymine amphiphiles (DA-Ade, DA-Thy), were changed by addition of oligonucleotides, d(GT)15 or d(GGT)10, in the water subphase. Photopolymerization of diacetylene in the monolayer was strongly suppressed on the oligonucleotide subphase. This suggests that the oligonucleotide can act as a template for the diacetylene monomer arrangement via complementary hydrogen bonding at the air-water interface.
{"title":"Photopolymerization of the Diacetylene Nucleobase Monolayers Controlled by Triplex Formation","authors":"Jin Matsumoto, K. Ijiro, M. Shimomura","doi":"10.1080/10587250108024681","DOIUrl":"https://doi.org/10.1080/10587250108024681","url":null,"abstract":"Abstract Pressure-area isotherms of ternary component monolayers of nucleobase amphiphiles, octadecylcytosine (C18-Cyt) and diacetylene-containing adenine and thymine amphiphiles (DA-Ade, DA-Thy), were changed by addition of oligonucleotides, d(GT)15 or d(GGT)10, in the water subphase. Photopolymerization of diacetylene in the monolayer was strongly suppressed on the oligonucleotide subphase. This suggests that the oligonucleotide can act as a template for the diacetylene monomer arrangement via complementary hydrogen bonding at the air-water interface.","PeriodicalId":18940,"journal":{"name":"Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals","volume":"17 3 1","pages":"33 - 36"},"PeriodicalIF":0.0,"publicationDate":"2001-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78816082","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: 10.1080/10587250108030065
C. Chung, S. Cho, S. Oh
Abstract A new positive-type photosensitive polyimide containing simultaneously N-carbonyloxyimide groups and cyclobutane rings in the main chain was prepared, and its photodegradation behavior was investigated by FT-IR, 1H NMR, and GC-MS spectroscopy. The polyimide underwent a photo-induced decomposition through the cleavage of N-O bond as well as cyclobutane ring, affording maleimide as a photoproduct. The polyimide exhibited enhanced photosensitivity compared to conventional cyclobutane-containing polyimides.
{"title":"Synthesis and Photodegradation of a Polyimide Having N-Carbonyloxyimide Moieties in the Main Chain","authors":"C. Chung, S. Cho, S. Oh","doi":"10.1080/10587250108030065","DOIUrl":"https://doi.org/10.1080/10587250108030065","url":null,"abstract":"Abstract A new positive-type photosensitive polyimide containing simultaneously N-carbonyloxyimide groups and cyclobutane rings in the main chain was prepared, and its photodegradation behavior was investigated by FT-IR, 1H NMR, and GC-MS spectroscopy. The polyimide underwent a photo-induced decomposition through the cleavage of N-O bond as well as cyclobutane ring, affording maleimide as a photoproduct. The polyimide exhibited enhanced photosensitivity compared to conventional cyclobutane-containing polyimides.","PeriodicalId":18940,"journal":{"name":"Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals","volume":"52 1","pages":"177 - 180"},"PeriodicalIF":0.0,"publicationDate":"2001-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75363430","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}
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