{"title":"Solution Chemistry Based on the Concept of Fluctuations","authors":"K. Nishikawa, T. Morita","doi":"10.3175/MOLSCI.6.A0054","DOIUrl":"https://doi.org/10.3175/MOLSCI.6.A0054","url":null,"abstract":"","PeriodicalId":19105,"journal":{"name":"Molecular Science","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83991631","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}
A brief summary of current surface science is followed by a perspective. Two recent pieces of photocatalyst research are presented as examples along with the perspective.
{"title":"Molecular Science at Interfaces","authors":"H. Onishi","doi":"10.3175/MOLSCI.5.A0045","DOIUrl":"https://doi.org/10.3175/MOLSCI.5.A0045","url":null,"abstract":"A brief summary of current surface science is followed by a perspective. Two recent pieces of photocatalyst research are presented as examples along with the perspective.","PeriodicalId":19105,"journal":{"name":"Molecular Science","volume":"38 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2011-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78746124","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}
Chemical reactions and pathways involving a metal cluster change dramatically with the cluster size and composition. These dependences originate essentially from the electron correlation of the cluster, and hence are closely related to the geometrical and electronic structures of the cluster. Along with our recent studies, the following subjects are reviewed: (i) reactivity, (ii) geometrical and electronic structures in relation to the reactivity, (iii) reaction dynamics, and (iv) catalytic properties.
{"title":"Chemical Reactions on Metal Clusters","authors":"M. Ichihashi","doi":"10.3175/MOLSCI.5.A0044","DOIUrl":"https://doi.org/10.3175/MOLSCI.5.A0044","url":null,"abstract":"Chemical reactions and pathways involving a metal cluster change dramatically with the cluster size and composition. These dependences originate essentially from the electron correlation of the cluster, and hence are closely related to the geometrical and electronic structures of the cluster. Along with our recent studies, the following subjects are reviewed: (i) reactivity, (ii) geometrical and electronic structures in relation to the reactivity, (iii) reaction dynamics, and (iv) catalytic properties.","PeriodicalId":19105,"journal":{"name":"Molecular Science","volume":"67 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2011-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75371788","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}
Intense (1012-1013 W/cm2) phase-controlled laser fields consisting of a fundamental light and a second-harmonic light induce the directionally asymmetric tunneling ionization and the resultant orientation-selective molecular ionization. It is demonstrated that orientation-selective molecular ionization induced by phase-controlled ω + 2ω laser fields reflects the geometric structure of the highest occupied molecular orbital. This method was robust, being free of both laser wavelength and pulse-duration constraints, and thus can be applied to a wide range of molecules.
{"title":"Quantum Control of Molecular Ionization Process by Phase-controlled Laser Fields","authors":"H. Ohmura","doi":"10.3175/MOLSCI.5.A0039","DOIUrl":"https://doi.org/10.3175/MOLSCI.5.A0039","url":null,"abstract":"Intense (1012-1013 W/cm2) phase-controlled laser fields consisting of a fundamental light and a second-harmonic light induce the directionally asymmetric tunneling ionization and the resultant orientation-selective molecular ionization. It is demonstrated that orientation-selective molecular ionization induced by phase-controlled ω + 2ω laser fields reflects the geometric structure of the highest occupied molecular orbital. This method was robust, being free of both laser wavelength and pulse-duration constraints, and thus can be applied to a wide range of molecules.","PeriodicalId":19105,"journal":{"name":"Molecular Science","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2011-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84239567","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}
{"title":"Reminiscences of the Early Days of Ultrafast Spectroscopy","authors":"K. Yoshihara","doi":"10.3175/MOLSCI.5.A0037","DOIUrl":"https://doi.org/10.3175/MOLSCI.5.A0037","url":null,"abstract":"","PeriodicalId":19105,"journal":{"name":"Molecular Science","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2011-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85068840","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}
Ferroelectricity has been time-honored subject in terms of various electronic, electro-mechanical, and optical functions. Developing organic ferroelectrics with advantages of light-weight, flexible, low-cost, and environmentally benign characteristics is surely in demand, yet needs elaborate chemical designs of objective functions. This review describes modern chemical approach to improved dielectric, ferroelectric and/or thermal properties, based on the charge-transfer complexes and hydrogen-bonded compounds.
{"title":"Ferroelectricity in Organic Molecular Crystals","authors":"S. Horiuchi","doi":"10.3175/MOLSCI.5.A0041","DOIUrl":"https://doi.org/10.3175/MOLSCI.5.A0041","url":null,"abstract":"Ferroelectricity has been time-honored subject in terms of various electronic, electro-mechanical, and optical functions. Developing organic ferroelectrics with advantages of light-weight, flexible, low-cost, and environmentally benign characteristics is surely in demand, yet needs elaborate chemical designs of objective functions. This review describes modern chemical approach to improved dielectric, ferroelectric and/or thermal properties, based on the charge-transfer complexes and hydrogen-bonded compounds.","PeriodicalId":19105,"journal":{"name":"Molecular Science","volume":"60 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2011-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86302722","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}
{"title":"Private Papers on the Act of Doing Research","authors":"M. Tasumi","doi":"10.3175/MOLSCI.5.A0036","DOIUrl":"https://doi.org/10.3175/MOLSCI.5.A0036","url":null,"abstract":"","PeriodicalId":19105,"journal":{"name":"Molecular Science","volume":"77 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2011-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78051820","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}
{"title":"Automated Exploration of Chemical Reaction Pathways","authors":"K. Ohno, S. Maeda","doi":"10.3175/MOLSCI.5.A0042","DOIUrl":"https://doi.org/10.3175/MOLSCI.5.A0042","url":null,"abstract":"","PeriodicalId":19105,"journal":{"name":"Molecular Science","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2011-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87419043","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}
Highly localized plasmons can be excited at atomically smooth metal surfaces by using a sphere-plane type plasmonic cavity. This plasmonic structure can be optimized for use in well-organized self-assembled monolayers formed on various single crystalline metal substrates including highly damping platinum-group catalytic metals, and is therefore useful in the fields of molecular science, catalytic science, and surface science. Surface enhanced Raman scattering (SERS) observation at well-defined molecule-metal interfaces revealed crystallographic orientation dependence not only in adsorption geometry of the molecules but also in the signal enhancement, suggesting a contribution of interfacial charge transfer resonances between metal states and molecular affinity levels. Moreover, this method enables us to increase efficiency of various photochemical processes such as photo-energy conversion when photo-sensitive molecular layers are formed on a substrate. The use of well-defined metal-organic system in plasmonic cavities opens up a new possibility of spectroscopy and photochemistry.
{"title":"原子・分子レベルで制御された金属－有機分子界面におけるプラズモニック光化学","authors":"勝佳 池田","doi":"10.3175/MOLSCI.5.A0040","DOIUrl":"https://doi.org/10.3175/MOLSCI.5.A0040","url":null,"abstract":"Highly localized plasmons can be excited at atomically smooth metal surfaces by using a sphere-plane type plasmonic cavity. This plasmonic structure can be optimized for use in well-organized self-assembled monolayers formed on various single crystalline metal substrates including highly damping platinum-group catalytic metals, and is therefore useful in the fields of molecular science, catalytic science, and surface science. Surface enhanced Raman scattering (SERS) observation at well-defined molecule-metal interfaces revealed crystallographic orientation dependence not only in adsorption geometry of the molecules but also in the signal enhancement, suggesting a contribution of interfacial charge transfer resonances between metal states and molecular affinity levels. Moreover, this method enables us to increase efficiency of various photochemical processes such as photo-energy conversion when photo-sensitive molecular layers are formed on a substrate. The use of well-defined metal-organic system in plasmonic cavities opens up a new possibility of spectroscopy and photochemistry.","PeriodicalId":19105,"journal":{"name":"Molecular Science","volume":"45 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2011-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82264957","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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