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Monolayer behavior and BAM observaion of biphenyl liquid crystalline polysiloxane at the A/W interface 联苯液晶聚硅氧烷在A/W界面上的单层行为和BAM观察
Supramolecular Science Pub Date : 1998-10-01 Epub Date: 1999-02-16 DOI: 10.1016/S0968-5677(98)00080-7
Qingbin Xue , Kongzhang Yang , Xiao Chen , Qizhen Zhang
{"title":"Monolayer behavior and BAM observaion of biphenyl liquid crystalline polysiloxane at the A/W interface","authors":"Qingbin Xue ,&nbsp;Kongzhang Yang ,&nbsp;Xiao Chen ,&nbsp;Qizhen Zhang","doi":"10.1016/S0968-5677(98)00080-7","DOIUrl":"10.1016/S0968-5677(98)00080-7","url":null,"abstract":"<div><p>Monolayers of a chiral biphenyl liquid crystalline polysiloxane and its monomer have been studied by <em>π</em>–A isotherms and hysteresis measurements. Both of them can form monolayers at different temperatures. The molecular packing in the monolayers are temperature-dependent for the monomer but not for the polymer. The molecular orderings are dominated by the packing of the biphenyl mesogens. Metastable monolayers with different ordering and thickness of domains have been directly observed by Brewster Angle Microscopy (BAM) in monomer monolayers. Both of them show characteristics of rigid monolayers. A broken process of the monolayers can be observed during expansion.</p></div>","PeriodicalId":22050,"journal":{"name":"Supramolecular Science","volume":"5 5","pages":"Pages 587-589"},"PeriodicalIF":0.0,"publicationDate":"1998-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0968-5677(98)00080-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84662712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Topological characterization and immobilization of a chromatophore membrane from Rhodopseudomonas viridis for application as a photoelectrical device 绿色红假单胞菌光电子器件色素体膜的拓扑表征及固定化
Supramolecular Science Pub Date : 1998-10-01 Epub Date: 1999-02-16 DOI: 10.1016/S0968-5677(98)00111-4
M. Hara , S. Ajiki , J. Miyake
{"title":"Topological characterization and immobilization of a chromatophore membrane from Rhodopseudomonas viridis for application as a photoelectrical device","authors":"M. Hara ,&nbsp;S. Ajiki ,&nbsp;J. Miyake","doi":"10.1016/S0968-5677(98)00111-4","DOIUrl":"10.1016/S0968-5677(98)00111-4","url":null,"abstract":"<div><p>We characterized topological orientation of bacterial photosynthetic membranes (chromatophores) from <em>Rhodopseudomonas viridis</em> using antibodies against H- and C-subunit of photosynthetic reaction center protein (RC). About 40% of the membranes were unsealed vesicles in the inside-out orientation exposing the cytoplasmic side whereas 20% of those were unsealed vesicles in the right side-out orientation expo-sing the periplasmic side. The residual 20% was in the form of a flat sheet structure. We immobilized the chromatophore membranes onto an indium–tin-oxide (ITO) electrode by the electro-deposition method. The electro-deposited film (ED film) showed photocurrent and photovoltage between different electrodes such as ITO and gold (Au). Addition of buffer salts such as sodium phosphate enhanced very much the photoelectrical response in the ED film.</p></div>","PeriodicalId":22050,"journal":{"name":"Supramolecular Science","volume":"5 5","pages":"Pages 717-721"},"PeriodicalIF":0.0,"publicationDate":"1998-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0968-5677(98)00111-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73430450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Self-assembly of supramolecular complexes based on hydrogen bonding 基于氢键的超分子配合物的自组装
Supramolecular Science Pub Date : 1998-10-01 Epub Date: 1999-02-16 DOI: 10.1016/S0968-5677(98)00090-X
Haipeng Zheng, Ruifeng Zhang, Jiacong Shen
{"title":"Self-assembly of supramolecular complexes based on hydrogen bonding","authors":"Haipeng Zheng,&nbsp;Ruifeng Zhang,&nbsp;Jiacong Shen","doi":"10.1016/S0968-5677(98)00090-X","DOIUrl":"10.1016/S0968-5677(98)00090-X","url":null,"abstract":"<div><p>Self-assembly of hydrogen-bonding recognition complexes—2.5-bis(alkylamino)-1,4-benzoquinones were studied, and thermotropic liquid crystalline behavior of 2.5-bis(dodecylamino)-1,4-benzoquinone was further investigated. The obtained results showed that a ribbon-like backbone in this system plays an important role in keeping the layered supramolecular structure.</p></div>","PeriodicalId":22050,"journal":{"name":"Supramolecular Science","volume":"5 5","pages":"Pages 627-629"},"PeriodicalIF":0.0,"publicationDate":"1998-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0968-5677(98)00090-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81900912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
The synthesis of aminotri-tert-butyl phthalocyanine and its gas sensitivity to nitrogen dioxide 氨基三叔丁基酞菁的合成及其对二氧化氮的气敏性
Supramolecular Science Pub Date : 1998-10-01 Epub Date: 1999-02-16 DOI: 10.1016/S0968-5677(98)00062-5
W.P. Hu, Y.Q. Liu, S.G. Liu, S.Q. Zhou, D.B. Zhu
{"title":"The synthesis of aminotri-tert-butyl phthalocyanine and its gas sensitivity to nitrogen dioxide","authors":"W.P. Hu,&nbsp;Y.Q. Liu,&nbsp;S.G. Liu,&nbsp;S.Q. Zhou,&nbsp;D.B. Zhu","doi":"10.1016/S0968-5677(98)00062-5","DOIUrl":"10.1016/S0968-5677(98)00062-5","url":null,"abstract":"<div><p>Aminotri-tert-butyl phthalocyanine (AmBuPc) is a new asymmetrical phthalocyanine, which possesses three tert-butyl groups and one amino-group. All the substituents are electron-donating ones and have a strong electron-donating ability when they interact with oxidizing gases, such as NO<sub>2</sub>. We report its synthesis and its gas sensitivity to nitrogen dioxide, and reveal the electrochemical properties of this compound.</p></div>","PeriodicalId":22050,"journal":{"name":"Supramolecular Science","volume":"5 5","pages":"Pages 507-510"},"PeriodicalIF":0.0,"publicationDate":"1998-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0968-5677(98)00062-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72799008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Capacitance–voltage property of composite microsphere monolayer with polymer/Fe2O3/ polymer structure 聚合物/Fe2O3/聚合物复合微球单层的电容-电压特性
Supramolecular Science Pub Date : 1998-10-01 Epub Date: 1999-02-16 DOI: 10.1016/S0968-5677(98)00102-3
X.M. Qian , H. Du , X.T. Zhang , L.S. Li , D.Y. Wang , J. Tang , R. Lu , Y.B. Bai , T.J. Li , X.Y. Tang , W.M. Li , D.B. Hu
{"title":"Capacitance–voltage property of composite microsphere monolayer with polymer/Fe2O3/ polymer structure","authors":"X.M. Qian ,&nbsp;H. Du ,&nbsp;X.T. Zhang ,&nbsp;L.S. Li ,&nbsp;D.Y. Wang ,&nbsp;J. Tang ,&nbsp;R. Lu ,&nbsp;Y.B. Bai ,&nbsp;T.J. Li ,&nbsp;X.Y. Tang ,&nbsp;W.M. Li ,&nbsp;D.B. Hu","doi":"10.1016/S0968-5677(98)00102-3","DOIUrl":"10.1016/S0968-5677(98)00102-3","url":null,"abstract":"<div><p>Inorganic nanoparticles Fe<sub>2</sub>O<sub>3</sub> 3–5<!--> <!-->nm in diameter were assembled on the surface of polymer microspheres and then encapsulated in the polymer to form a trilayer composite structure. The capacitance–voltage (<em>C</em>–<em>V</em>) curve of the composite microsphere monolayer shows the presence of a plateau. The electron transportation process in the special structure was investigated combining with the energy band model. The results show that Fe<sub>2</sub>O<sub>3</sub> layer acts as a charge trap between polymer layers which are regarded as potential barriers.</p></div>","PeriodicalId":22050,"journal":{"name":"Supramolecular Science","volume":"5 5","pages":"Pages 683-686"},"PeriodicalIF":0.0,"publicationDate":"1998-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0968-5677(98)00102-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80037340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Heteroaggregation and photoelectric conversion of porphyrins on a nanostructured TiO2 electrode 卟啉在纳米结构TiO2电极上的异聚集和光电转换
Supramolecular Science Pub Date : 1998-10-01 Epub Date: 1999-02-16 DOI: 10.1016/S0968-5677(98)00099-6
Huihua Deng, Zuhong Lu
{"title":"Heteroaggregation and photoelectric conversion of porphyrins on a nanostructured TiO2 electrode","authors":"Huihua Deng,&nbsp;Zuhong Lu","doi":"10.1016/S0968-5677(98)00099-6","DOIUrl":"10.1016/S0968-5677(98)00099-6","url":null,"abstract":"<div><p>The cosensitization of a nanostructured titanium dioxide (TiO<sub>2</sub>) electrode with tetrasulphonated porphyrins (MTsPP M=Zn H<sub>2</sub>) is reported. Cosensitization greatly enhances the photocurrent response at the <em>Q</em>-band of H<sub>2</sub>TsPP and markedly decreases the photocurrent response in the Soret band of ZnTsPP. The photoelectric behavior of the cosensitized TiO<sub>2</sub> electrode is attributed to the formation of heteroaggregates between H<sub>2</sub>TsPP and ZnTsPP molecules on the positively charged TiO<sub>2</sub> electrode by charge-transfer interaction resulting in the decrease of the surface concentration of the H<sub>2</sub>TsPP dimer and the presence of the low-lying charge-transfer state.</p></div>","PeriodicalId":22050,"journal":{"name":"Supramolecular Science","volume":"5 5","pages":"Pages 669-674"},"PeriodicalIF":0.0,"publicationDate":"1998-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0968-5677(98)00099-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72951617","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
Preparation and structural properties of an azobenzene liquid crystal Langmuir–Blodgett film 偶氮苯液晶Langmuir-Blodgett薄膜的制备及其结构性能
Supramolecular Science Pub Date : 1998-10-01 Epub Date: 1999-02-16 DOI: 10.1016/S0968-5677(98)00082-0
Jian Jin , Lin Song Li , Yan Jie Zhang , Yan Qing Tian , Ying Ying Zhao , Dong Fang Shen , Tie Jin Li , Shi Mei Jiang , Ning Zheng
{"title":"Preparation and structural properties of an azobenzene liquid crystal Langmuir–Blodgett film","authors":"Jian Jin ,&nbsp;Lin Song Li ,&nbsp;Yan Jie Zhang ,&nbsp;Yan Qing Tian ,&nbsp;Ying Ying Zhao ,&nbsp;Dong Fang Shen ,&nbsp;Tie Jin Li ,&nbsp;Shi Mei Jiang ,&nbsp;Ning Zheng","doi":"10.1016/S0968-5677(98)00082-0","DOIUrl":"10.1016/S0968-5677(98)00082-0","url":null,"abstract":"<div><p>Azobenzene-containing liquid crystal, 2-hydroxy-4-hexyloxy-4′-hexyloxy azobenzene (AB), was synthesized and used to produce LB films. The surface pressure <em>vs</em> surface area isotherm showed that the liquid crystal molecules formed a stable multilayer on the water subphase owing to the self-assembly for their much smaller area per molecule with 0.1<!--> <!-->nm<sup>2</sup> at <em>π</em>=0 and 0.07<!--> <!-->nm<sup>2</sup> at collapse point. This spontaneous behavior was also confirmed by small angle X-ray diffraction for a ‘horizontally once-transferred’ LB film. The ‘vertically multi-transferred’ LB film also exhibited the same ordered layer structure with the long spacing of the multilayer about 2.0<!--> <!-->nm. Polarized FTIR spectra were used to measure the orientation of liquid crystal molecules in LB films with a tilt angle of 60° and 48° (corresponding to azobenzene moiety and hydrocarbon chain, respectively), which is well in accordance with the result of X-ray diffraction. The result from UV–vis absorption spectra revealed that the AB molecule formed H-aggregation in LB films.</p></div>","PeriodicalId":22050,"journal":{"name":"Supramolecular Science","volume":"5 5","pages":"Pages 595-598"},"PeriodicalIF":0.0,"publicationDate":"1998-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0968-5677(98)00082-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81276401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Monolayer behaviors for the photochromic liquid crystalline copolymers with azobenzene and cholesterol side groups 偶氮苯和胆固醇侧基光致变色液晶共聚物的单层行为
Supramolecular Science Pub Date : 1998-10-01 Epub Date: 1999-02-16 DOI: 10.1016/S0968-5677(98)00081-9
X. Chen , Q.B. Xue , K.Z. Yang , Y. Wang , J.Z. Zhang , Q.Z. Zhang
{"title":"Monolayer behaviors for the photochromic liquid crystalline copolymers with azobenzene and cholesterol side groups","authors":"X. Chen ,&nbsp;Q.B. Xue ,&nbsp;K.Z. Yang ,&nbsp;Y. Wang ,&nbsp;J.Z. Zhang ,&nbsp;Q.Z. Zhang","doi":"10.1016/S0968-5677(98)00081-9","DOIUrl":"10.1016/S0968-5677(98)00081-9","url":null,"abstract":"<div><p>Monolayer behaviors for a series of newly synthesized photochromic liquid crystalline copolymers were studied. Results showed that the azo-homopolymer would aggregate heavily after spreading and its monolayer was not suitable for deposition of the reversible photochromic LB film. However, the liquid crystallinity, which resulted by introducing mesogenic cholesteric side chains, could reduce monolayer aggregation and improve reversible photoinduced structural change in LB films.</p></div>","PeriodicalId":22050,"journal":{"name":"Supramolecular Science","volume":"5 5","pages":"Pages 591-593"},"PeriodicalIF":0.0,"publicationDate":"1998-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0968-5677(98)00081-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78709756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Design, synthesis and characterization of artificial phospholipids as model membrane receptors for specific binding of rabbit C-reactive protein 人造磷脂作为兔c反应蛋白特异性结合模型膜受体的设计、合成和表征
Supramolecular Science Pub Date : 1998-10-01 Epub Date: 1999-02-16 DOI: 10.1016/S0968-5677(98)00128-X
Qingzhong Zhou , Qiufeng Gao , Jing Tong , Yue Zhou , Jia Mao , Sen-fang Sui
{"title":"Design, synthesis and characterization of artificial phospholipids as model membrane receptors for specific binding of rabbit C-reactive protein","authors":"Qingzhong Zhou ,&nbsp;Qiufeng Gao ,&nbsp;Jing Tong ,&nbsp;Yue Zhou ,&nbsp;Jia Mao ,&nbsp;Sen-fang Sui","doi":"10.1016/S0968-5677(98)00128-X","DOIUrl":"10.1016/S0968-5677(98)00128-X","url":null,"abstract":"<div><p>C-reactive protein (CRP) is an acute phase reactive protein, which has been shown to specifically bind to phosphorylcholine (PC) and phosphorylethanoamine (PE) moieties in the presence of calcium. In order to investigate the effect of steric hindrance on the specific binding of CRP to membranes, we designed and synthesized six phospholipids, each containing a long-arm spacer of 3, 6 or 8 atoms between the head group and hydrophobic tail. By mixing synthesized lipids and natural lipids the ligand-containing monolayers were prepared, which have PC or PE groups protruding out of the membrane surface. To characterize of the synthesized phospholipids, the thickness of the lipid monolayers was measured by surface plasmon resonance (SPR) technique, the phase behavior of the lipid monolayer at air/water interface was studied by pressure–area analysis, and the specific binding of rabbit C-reactive protein to the synthesized lipid containing membranes was studied by imaging ellipsometry.</p></div>","PeriodicalId":22050,"journal":{"name":"Supramolecular Science","volume":"5 5","pages":"Pages 795-802"},"PeriodicalIF":0.0,"publicationDate":"1998-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0968-5677(98)00128-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79313330","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Conformation-driven computing: simulating the context-conformation-action loop 构象驱动计算:模拟上下文-构象-行动循环
Supramolecular Science Pub Date : 1998-10-01 Epub Date: 1999-02-16 DOI: 10.1016/S0968-5677(98)00127-8
Klaus-Peter Zauner, Michael Conrad
{"title":"Conformation-driven computing: simulating the context-conformation-action loop","authors":"Klaus-Peter Zauner,&nbsp;Michael Conrad","doi":"10.1016/S0968-5677(98)00127-8","DOIUrl":"10.1016/S0968-5677(98)00127-8","url":null,"abstract":"<div><p>Function follows conformation in biological macromolecules. In general there are a number of possible conformational states. Which state is favored is determined by physicochemical context. The fusion of the features that comprise this context to form a particular conformational state is at the core of cellular control and biological information processing. We have developed a simulation system to investigate the information processing capabilities of networks of context-sensing macromolecules (to be illustrated by a simple example).</p></div>","PeriodicalId":22050,"journal":{"name":"Supramolecular Science","volume":"5 5","pages":"Pages 791-794"},"PeriodicalIF":0.0,"publicationDate":"1998-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0968-5677(98)00127-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75776902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 11
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