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Developments of a Liquid Flow Cell for Soft x-ray Spectroscopy and Observations of Water Molecules in Liquid Solutions 软x射线光谱学液体流动池的研制及液体溶液中水分子的观测
Molecular Science Pub Date : 2015-01-01 DOI: 10.3175/molsci.9.a0077
T. Tokushima
{"title":"Developments of a Liquid Flow Cell for Soft x-ray Spectroscopy and Observations of Water Molecules in Liquid Solutions","authors":"T. Tokushima","doi":"10.3175/molsci.9.a0077","DOIUrl":"https://doi.org/10.3175/molsci.9.a0077","url":null,"abstract":"Soft x-ray spectroscopies which utilize electronic transition of core electrons are known as a powerful tool for observing electronic structures, and are extensively applied to solid and gaseous samples in vacuum. While soft x-ray requires a vacuum because of its low penetration ability, one cannot hold liquid phase samples in vacuum due to the vaporization of liquids. Therefore, soft x-ray measurement of liquid samples was one of the difficult experiments only a decade ago. Recently, extensive developments in experimental techniques have enabled the application of x-ray emission and absorption spectroscopy to liquid and solution samples. In this article, our recent investigations on electronic state concerning liquid structure of water using soft x-ray beamline BL17SU in third generation synchrotron facility SPring-8 are reviewed. In addition, the development of experimental apparatus dedicated to the research of liquid and solution samples is presented.","PeriodicalId":19105,"journal":{"name":"Molecular Science","volume":"305 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79816511","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}
引用次数: 0
Systematic Study on Electronic Structure of Organic Thin Films and Interfaces by Photoemission Spectroscopy with Synchrotron Radiation 同步辐射光发射光谱系统研究有机薄膜和界面的电子结构
Molecular Science Pub Date : 2015-01-01 DOI: 10.3175/MOLSCI.9.A0078
H. Yamane
{"title":"Systematic Study on Electronic Structure of Organic Thin Films and Interfaces by Photoemission Spectroscopy with Synchrotron Radiation","authors":"H. Yamane","doi":"10.3175/MOLSCI.9.A0078","DOIUrl":"https://doi.org/10.3175/MOLSCI.9.A0078","url":null,"abstract":"【はじめに】 機能性有機分子(有機半導体)の多くは、弱い分子間相互作用によって集合体を形成し、その 電子物性・機能には分子骨格面外に緩く結合した π 電子が関与する。このような分子間相互作用 によって支配された弱い相互作用場では、分子個々の性質と集合体としての性質が協奏し、分子 の集合状態(結晶構造、分子配向・配列)に依存した電子物性・機能が発現する。 物質の電子物性・機能を研究するうえで、外部光電効果を利用した光電子分光法は直接的かつ 有効な手法として知られている。特に、物質から放出された光電子のエネルギー分布と角度分布 を計測する角度分解光電子分光法(ARPES)は、波数分解した電子構造(バンド構造)に関する 知見を与える。さらに、励起光に波長可変な放射光を用いることによって、バンド構造の三次元 情報が得られることに加え、種々の X 線分光法の適用も可能となり、特定の元素・官能基サイト における分子配向や基板との吸着距離を定量的に決定することができる。 本研究では、有機薄膜・界面の構造と電子状態との相関を系統的に解明するために、分子系の 電子状態研究に最適化した ARPES 装置の開発(@分子研 UVSOR 施設)とそれを用いた有機薄膜・ 界面の高精度な電子状態測定に取り組んできた。その結果、従来は困難だった有機薄膜・界面の 構造と電子状態の相関の系統的解明に成功した。","PeriodicalId":19105,"journal":{"name":"Molecular Science","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73011747","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}
引用次数: 0
Gas Phase Spectroscopy of Catecholamines and Relevant Molecules by Laser Desorption Supersonic Jet Technique 激光解吸超音速射流技术研究儿茶酚胺及其相关分子的气相光谱
Molecular Science Pub Date : 2015-01-01 DOI: 10.3175/molsci.9.a0075
S. Ishiuchi
{"title":"Gas Phase Spectroscopy of Catecholamines and Relevant Molecules by Laser Desorption Supersonic Jet Technique","authors":"S. Ishiuchi","doi":"10.3175/molsci.9.a0075","DOIUrl":"https://doi.org/10.3175/molsci.9.a0075","url":null,"abstract":"Laser desorption supersonic jet spectroscopy, which can enable the conformer-selected measurements, was improved by optimizing the matrix substances and introducing a high-pressure supersonic jet expansion to obtain high desorption efficiency and high jet-cooling effect. The improved laser desorption supersonic jet technique was applied to catecholamine neurotransmitters and their relevant molecules. By using resonance enhanced multiphoton ionization and UV-UV hole burning spectroscopies, the number of conformers of each molecule was determined. By comparing them, we found a propensity rule, named as “doubling rule”, in the conformational evolution of relevant molecules. However, the numbers of conformers of catecholamines are much less than the expected ones by the doubling rule. Thus we concluded that the numbers of conformers of catecholamines are specifically small. We discussed the reason of decreasing the number of conformers of catecholamines, and which was interpreted as due to the specific flexibility of catecholamines.","PeriodicalId":19105,"journal":{"name":"Molecular Science","volume":"90 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91463218","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}
引用次数: 0
Being Charmed by Mysterious High-resolution Spectra of Molecules 被神秘的高分辨率分子光谱迷住了
Molecular Science Pub Date : 2015-01-01 DOI: 10.3175/molsci.9.a0074
Koichi M. T. Yamada
{"title":"Being Charmed by Mysterious High-resolution Spectra of Molecules","authors":"Koichi M. T. Yamada","doi":"10.3175/molsci.9.a0074","DOIUrl":"https://doi.org/10.3175/molsci.9.a0074","url":null,"abstract":"","PeriodicalId":19105,"journal":{"name":"Molecular Science","volume":"59 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78718220","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}
引用次数: 0
Atmospheric Heterogeneous Reaction Chemistry and Theoretical Molecular Science 大气非均相反应化学与理论分子科学
Molecular Science Pub Date : 2015-01-01 DOI: 10.3175/MOLSCI.9.A0079
H. Akimoto
{"title":"Atmospheric Heterogeneous Reaction Chemistry and Theoretical Molecular Science","authors":"H. Akimoto","doi":"10.3175/MOLSCI.9.A0079","DOIUrl":"https://doi.org/10.3175/MOLSCI.9.A0079","url":null,"abstract":"In recent years much of interest in atmospheric chemistry has been focused on atmospheric aerosols. In this article, laboratory kinetic studies and related quantum chemical theoretical studies on typical processes of formation and transformation of organic aerosols have been reviewed. Specifically, it targets on the topics of heterogeneous reactions of atmospheric O3 and OH with organic compounds at the surface of aerosols, and aqueous-phase reactions of dialdehydes (glyoxal and methylglyoxal) in cloud and aerosol particles. In order to attain better understanding on such processes, fundamental studies based on molecular science are needed, and closer collaboration between atmospheric chemistry and theoretical computational chemistry is proposed.","PeriodicalId":19105,"journal":{"name":"Molecular Science","volume":"263 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73559934","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}
引用次数: 0
Development of novel functional properties of organic crystals in concert of π-electrons and hydrogens: —π電子と水素の協奏— 有机晶体中π-电子和氢原子协同作用的新功能性质的发展:- π
Molecular Science Pub Date : 2015-01-01 DOI: 10.3175/molsci.9.a0081
H. Mori
{"title":"Development of novel functional properties of organic crystals in concert of π-electrons and hydrogens: —π電子と水素の協奏—","authors":"H. Mori","doi":"10.3175/molsci.9.a0081","DOIUrl":"https://doi.org/10.3175/molsci.9.a0081","url":null,"abstract":"Organic functional crystals with novel π-electronic states such as (super)conductivity, (anti-/ferro)magnetism, etc. have been vigorously developed. On the other hand, researches of hydrogen-related functionalities such as (anti-/ferro) electrics, proton (super)conductivity, etc. have been also extensively performed. In this article, the novel π-electronhydrogen concerted organic materials and their functionalities are introduced. This phenomenon with dynamically coupled π electron-hydrogen might be related to biochemical cascade reactions and applicable to novel organic surface and devices.","PeriodicalId":19105,"journal":{"name":"Molecular Science","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74489667","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}
引用次数: 0
Novel Functional Devices of Single-walled Carbon Nanotubes 单壁碳纳米管的新型功能器件
Molecular Science Pub Date : 2015-01-01 DOI: 10.3175/MOLSCI.9.A0080
T. Takenobu
{"title":"Novel Functional Devices of Single-walled Carbon Nanotubes","authors":"T. Takenobu","doi":"10.3175/MOLSCI.9.A0080","DOIUrl":"https://doi.org/10.3175/MOLSCI.9.A0080","url":null,"abstract":"Single-walled carbon nanotubes are one of the candidate materials for the next generation electronics, such as printed, flexible, stretchable and wearable electronics due to their chemical stability, printability, flexibility, light-weight, and unique mechanical properties. In particularly, a combination of single-walled carbon nanotubes with electrolytes reveals rich and novel functionalities. This review describes recently demonstrated functional devices, such as inkjet-printed, extremely flexible, electrolyte-gated transistors.","PeriodicalId":19105,"journal":{"name":"Molecular Science","volume":"50 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78366286","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}
引用次数: 0
Molecular Mechanisms of Membrane Proteins Studied by Infrared Spectroscopy 红外光谱研究膜蛋白的分子机制
Molecular Science Pub Date : 2014-01-01 DOI: 10.3175/MOLSCI.8.A0067
Y. Furutani
{"title":"Molecular Mechanisms of Membrane Proteins Studied by Infrared Spectroscopy","authors":"Y. Furutani","doi":"10.3175/MOLSCI.8.A0067","DOIUrl":"https://doi.org/10.3175/MOLSCI.8.A0067","url":null,"abstract":"【序】 細胞膜にはイオンチャネル、イオンポンプ、受容体などの様々な膜タンパク質が存在し、 細胞内外における物質や情報のやり取りに活躍している。これらの膜タンパク質が動作する分子 機構を明らかにするためには、X 線結晶構造解析などで得られる原子レベルでの3次元構造情報 だけでなく、それらが動作する過程での構造変化を明らかにする必要がある。赤外分光法は分子 の振動に基づく赤外吸収スペクトルにより、分子の構造や周辺環境に関する情報が得られる手法 である。タンパク質の赤外吸収スペクトルからαヘリックスやβシートなど二次構造に関する情 報が得られる。さらに、光や電位などの物理的刺激やタンパク質に結合する化合物などの化学的 刺激を与え、刺激前後の差スペクトルを計算することで、タンパク質の主鎖や側鎖の構造変化を 明らかにすることが可能である。本講演では、赤外分光法を用いて様々な膜タンパク質の動作機 構の解明にどのように取り組んできたのかを紹介する。","PeriodicalId":19105,"journal":{"name":"Molecular Science","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86017088","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}
引用次数: 0
Looking Back Fifty Years of Collaboration with Experimentalists 回顾与实验学家合作的五十年
Molecular Science Pub Date : 2014-01-01 DOI: 10.3175/MOLSCI.8.A0065
K. Morokuma
{"title":"Looking Back Fifty Years of Collaboration with Experimentalists","authors":"K. Morokuma","doi":"10.3175/MOLSCI.8.A0065","DOIUrl":"https://doi.org/10.3175/MOLSCI.8.A0065","url":null,"abstract":"","PeriodicalId":19105,"journal":{"name":"Molecular Science","volume":"56 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87748707","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}
引用次数: 0
光と電場による構造，反応，機能に関する分子科学研究 有关光和电场的结构、反应、功能的分子科学研究
Molecular Science Pub Date : 2014-01-01 DOI: 10.3175/MOLSCI.8.A0073
信廣 太田
{"title":"光と電場による構造，反応，機能に関する分子科学研究","authors":"信廣 太田","doi":"10.3175/MOLSCI.8.A0073","DOIUrl":"https://doi.org/10.3175/MOLSCI.8.A0073","url":null,"abstract":"","PeriodicalId":19105,"journal":{"name":"Molecular Science","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78944203","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}
引用次数: 0
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