Pub Date : 2001-10-01DOI: 10.1080/10587250108024749
I. An, Hye-keun Oh, M. S. Paley
Abstract Real-time spectroscopic ellipsometry was employed to characterize the photo-assisted growth of polydiacetylene films in solution. From regression analysis, the low growth rate of ∼3 Å/min was obtained and the reduction of growth rate due to absorbing film was observed. The growth was strongly affected by the movement of solution indicating a reaction-limited process at film and solution boundary.
{"title":"Real-Time Spectroscopic Ellipsometric Studies of Photo-Assisted Chemical Processes","authors":"I. An, Hye-keun Oh, M. S. Paley","doi":"10.1080/10587250108024749","DOIUrl":"https://doi.org/10.1080/10587250108024749","url":null,"abstract":"Abstract Real-time spectroscopic ellipsometry was employed to characterize the photo-assisted growth of polydiacetylene films in solution. From regression analysis, the low growth rate of ∼3 Å/min was obtained and the reduction of growth rate due to absorbing film was observed. The growth was strongly affected by the movement of solution indicating a reaction-limited process at film and solution boundary.","PeriodicalId":18940,"journal":{"name":"Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals","volume":"7 1","pages":"313 - 316"},"PeriodicalIF":0.0,"publicationDate":"2001-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90353021","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: 10.1080/10587250108030054
Chuong-Han Kim, D. Kim, Jong Hyoup Lee, K. Lee
Abstract New liquid crystalline polymers with spiropyran derivative for optical recording applications were prepared by radical polymerization from two different monomers composed of mesogenic unit and spiropyran moiety. The resulting polymers have been characterized by FT-IR, 1H-NMR, DSC and UV/Vis spectroscopy. The weight average molecular weight (M w ) of polymers were in the range of 13,000–30,700 and thermal decomposition initiated in the range of 350-370°C. Good quality films were obtained by spin-coating onto indium tin oxide (ITO) glass plate and some of polymers exhibited smectic and nematic liquid crystalline phase at elevated temperatures. These polymers showed promising photochromic and thermochromic activities for optical recording materials.
{"title":"Photochromism of Liquid Crystalline Polymers with Spiropyran Derivatives","authors":"Chuong-Han Kim, D. Kim, Jong Hyoup Lee, K. Lee","doi":"10.1080/10587250108030054","DOIUrl":"https://doi.org/10.1080/10587250108030054","url":null,"abstract":"Abstract New liquid crystalline polymers with spiropyran derivative for optical recording applications were prepared by radical polymerization from two different monomers composed of mesogenic unit and spiropyran moiety. The resulting polymers have been characterized by FT-IR, 1H-NMR, DSC and UV/Vis spectroscopy. The weight average molecular weight (M w ) of polymers were in the range of 13,000–30,700 and thermal decomposition initiated in the range of 350-370°C. Good quality films were obtained by spin-coating onto indium tin oxide (ITO) glass plate and some of polymers exhibited smectic and nematic liquid crystalline phase at elevated temperatures. These polymers showed promising photochromic and thermochromic activities for optical recording materials.","PeriodicalId":18940,"journal":{"name":"Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals","volume":"25 1","pages":"131 - 134"},"PeriodicalIF":0.0,"publicationDate":"2001-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84662618","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: 10.1080/10587250108024701
Xiuguo Cui, Gohyup Yoo, W. Cho, C. Ha
Abstract Mesoporous silicas have been synthesized by templating of a linear diblock copolymer, poly(ethylene glycol-b-propylene glycol) in the neutral aqueous solution. The N2 adsorption behavior with the Barrett-Joyner-Halenda(BJH) method showed monodisperse pore size distribution. The high-resolution scanning electron micrograph showed that the pore size ranges 20 to 80nm. The results were compared to those templates by a triblock copolymer, poly(ethylene glycol-b-propylene glycol-b-ethylene glycol).
{"title":"Synthesis of Mesoporous Silica by Templating of Amphiphilic Diblock Copolymer Under Neutral Condition","authors":"Xiuguo Cui, Gohyup Yoo, W. Cho, C. Ha","doi":"10.1080/10587250108024701","DOIUrl":"https://doi.org/10.1080/10587250108024701","url":null,"abstract":"Abstract Mesoporous silicas have been synthesized by templating of a linear diblock copolymer, poly(ethylene glycol-b-propylene glycol) in the neutral aqueous solution. The N2 adsorption behavior with the Barrett-Joyner-Halenda(BJH) method showed monodisperse pore size distribution. The high-resolution scanning electron micrograph showed that the pore size ranges 20 to 80nm. The results were compared to those templates by a triblock copolymer, poly(ethylene glycol-b-propylene glycol-b-ethylene glycol).","PeriodicalId":18940,"journal":{"name":"Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals","volume":"7 1","pages":"115 - 118"},"PeriodicalIF":0.0,"publicationDate":"2001-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84800293","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: 10.1080/10587250108030025
Abstract This is a scanned image of the original Editorial Board page(s) for this issue.
这是本刊编辑委员会原始页面的扫描图像。
{"title":"Editorial board page for “Molecular Crystals and Liquid Crystals”, Volume 370, Number 1","authors":"","doi":"10.1080/10587250108030025","DOIUrl":"https://doi.org/10.1080/10587250108030025","url":null,"abstract":"Abstract This is a scanned image of the original Editorial Board page(s) for this issue.","PeriodicalId":18940,"journal":{"name":"Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals","volume":"32 1","pages":"a - a"},"PeriodicalIF":0.0,"publicationDate":"2001-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86209030","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: 10.1080/10587250108030017
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: 10.1080/10587250108030037
C. Lee, S. W. Kim, S. Oh
Abstract For the fabrication of high stable organic electroluminescent device, we have synthesized amorphous molecular materials such as 1,3,5-tris(phenylphenylamino)benzene (TDAB), p-ClTDAB, p-BrTDAB and p-MetTDAB as hole transporting materials and investigated ITO/p-XTDAB (X=Br, Cl, methoxy)/Alq3/Al device emitted green light. It has been found that organic EL device consisting of ITO/p-BrTDAB/Alq3/Al showed high EL intensity. Especially, the durability and EL performance of organic EL device using the amorphous hole transporting material were studied.
{"title":"Structural Effects of TDAB Amorphous Hole Transporting Materials on Performance of Organic EL Device","authors":"C. Lee, S. W. Kim, S. Oh","doi":"10.1080/10587250108030037","DOIUrl":"https://doi.org/10.1080/10587250108030037","url":null,"abstract":"Abstract For the fabrication of high stable organic electroluminescent device, we have synthesized amorphous molecular materials such as 1,3,5-tris(phenylphenylamino)benzene (TDAB), p-ClTDAB, p-BrTDAB and p-MetTDAB as hole transporting materials and investigated ITO/p-XTDAB (X=Br, Cl, methoxy)/Alq3/Al device emitted green light. It has been found that organic EL device consisting of ITO/p-BrTDAB/Alq3/Al showed high EL intensity. Especially, the durability and EL performance of organic EL device using the amorphous hole transporting material were studied.","PeriodicalId":18940,"journal":{"name":"Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals","volume":"1 1","pages":"53 - 56"},"PeriodicalIF":0.0,"publicationDate":"2001-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89969699","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: 10.1080/10587250108024788
Jianhua Wang, Hua Tong, Jing C Mao, Dan Zhou, Jihu M. Peng
Abstract Several Indium Phosphide based surface micromachining processes are presented in this paper, in order to develop Micro-Opto-Electro-Mechanical systems. By fabricating micro °Cantilevers composed of InP/Air gap pairs, the major techniques of the surface micromachining are studied, including non-selective and selective etching, rinsing and drying and so on. A severe problem of the sticking phenomena during the rinsing and drying is avoided by implementation of the Critical Point Drying (CPD) method.
{"title":"Surface Micromachining Techniques in InP Based Micro-Opto-Electro-Mechanical System","authors":"Jianhua Wang, Hua Tong, Jing C Mao, Dan Zhou, Jihu M. Peng","doi":"10.1080/10587250108024788","DOIUrl":"https://doi.org/10.1080/10587250108024788","url":null,"abstract":"Abstract Several Indium Phosphide based surface micromachining processes are presented in this paper, in order to develop Micro-Opto-Electro-Mechanical systems. By fabricating micro °Cantilevers composed of InP/Air gap pairs, the major techniques of the surface micromachining are studied, including non-selective and selective etching, rinsing and drying and so on. A severe problem of the sticking phenomena during the rinsing and drying is avoided by implementation of the Critical Point Drying (CPD) method.","PeriodicalId":18940,"journal":{"name":"Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals","volume":"45 1","pages":"481 - 484"},"PeriodicalIF":0.0,"publicationDate":"2001-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90807863","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}
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