Molecular Assembling by Radiation Pressure of Laser Beam

通过激光束辐射压力进行分子组装

• 批准号: 09044085
• 负责人: MASUHARA Hiroshi
• 金额: $ 3.78万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for international Scientific Research
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09044085/
• 关键词: photon pressure; single microparticle; intramolecular charge transfer; laser spectroscopy; polyacrylamide; picosecond fluorescence microscopy; infrared laser beam; block copolymer; 光の放射圧; レーザートラッピング; 光機能性分子; 構造解析; レーザー; 時間分解顕微蛍光測定; 微粒子形成

We have studied formation process of a single microparticle in solution under a microscope by photon pressure of a focused infrared laser beam and analyzed inner structure of the microparticle. This study is regarded as a new chemistry by photon pressure, which is quite different from conventional photophysics and photochemistry.Intramolecular charge transfer molecule was chosen as a fluorescence probe, and its photophysical and photochemical properties were studied in detail. Polyacrylamide polymer bonded with the intramolecular charge transfer molecule was synthesized, and its dynamic responses to thermal, pH, and related stimuli were studied. By focusing the infrared laser beam. the polyacrylamide are gathered at the focal point of the microscope by photon pressure, forming a single microparticle. The preparation process was observed from time to time, and its characteristic inner structure was analyzed by picosecond fluorescence microscopy. Similarly, a single microparticle composed of block copolymer micelles was studied, and local environmental condition and morphology of the single microparticle were revealed by space- and time- resolved fluorescence analysis.

利用聚焦红外激光的光子压力，在显微镜下研究了溶液中单个微粒的形成过程，并分析了微粒的内部结构。本研究是一种新的基于光子压力的化学，它不同于传统的光物理和光化学，选择分子内电荷转移分子作为荧光探针，详细研究了其光物理和光化学性质。合成了分子内电荷转移分子键合的聚丙烯酰胺聚合物，并研究了其对温度、pH及相关刺激的动态响应。通过聚焦红外激光束。聚丙烯酰胺通过光子压力聚集在显微镜的焦点处，形成单个微粒。对制备过程进行了实时观察，并利用皮秒荧光显微镜对其特征内部结构进行了分析。同样地，研究了由嵌段共聚物胶束组成的单个微粒，并通过空间和时间分辨荧光分析揭示了单个微粒的局部环境条件和形态。

项目成果

M.Maus, W.Rettig, S.Depaemelaere, A.Onkelinx, F.C.De Schryver, and k.Iwai: "SolventOand conformation-dependent electron transfer interactions in flexible biaromatic compounds : the case of 9-(dimethylanilino)phenanthrene" Chem.Phys.Lett.292. 115-124 (1998

M.Maus、W.Rettig、S.Depaemelaere、A.Onkelinx、F.C.De Schryver 和 k.Iwai：“柔性双芳香族化合物中溶剂与构象依赖性电子转移相互作用：9-(二甲基苯胺基)菲的情况” Chem。

M.Maus, W.Rettig, S.Depaemelaere, A.Onkelinx, F.C.De Schryver.and K.Iwai: "Solvent-and conformation-dependent electron transfer interactions in flexible biaromatic compounds : the case of 9- (dimethylanilino) phenanthrene." Chem.Phys.Lett.292. 115-124 (19

M.Maus、W.Rettig、S.Depaemelaere、A.Onkelinx、F.C.De Schryver. 和 K.Iwai：“柔性双芳香族化合物中溶剂和构象依赖性电子转移相互作用：以 9-（二甲基苯胺基）菲为例。

M.Maus, W.Rettig, S.Depaemelaere, A.Onkelinx, F.C.De Schryver, and K.Iwai: "Solvent-and conformation-dependent electron transfer interactions in flexible biaromatic compounds : the case of 9- (dimethylanilino) phenanthrene" Chem.Phys.Lett.292. 115-124 (19

M.Maus、W.Rettig、S.Depaemelaere、A.Onkelinx、F.C.De Schryver 和 K.Iwai：“柔性双芳香族化合物中溶剂和构象依赖性电子转移相互作用：9-（二甲基苯胺基）菲的情况”

T.Gensch, J.Hofkens, J.van Stam, H.Faes, S.Creutz, K.Tsuda, R.Jerome, H.Masuhara, and F.C.De Schryver: "Transmission and Confocal Fluorescence Microscopy and Time-Resolve Fluorescence Spectroscopy Combined with a Laser Trap : Investigation of Optically Tr

T.Gensch、J.Hofkens、J.van Stam、H.Faes、S.Creutz、K.Tsuda、R.Jerome、H.Masuhara 和 F.C.De Schryver：“透射和共焦荧光显微镜和时间分辨荧光光谱

Wouter Verbouwe, Lucien Viaene, Mark Van der Auweraer, Frans C.De Schryver, H.Masuhara, R.Pansu, J.Faure: "Photoinduced Intramolecular Charge Transfer in Diphenylamino-Substituted Triphenylbenzene,Biphenyl,and Fluorene" J.Phys.Chem.A. Vol.101 No.28. 8157-

Wouter Verbouwe、Lucien Viaene、Mark Van der Auweraer、Frans C.De Schryver、H.Masuhara、R.Pansu、J.Faure：“二苯氨基取代的三苯、联苯和芴中的光诱导分子内电荷转移”J.Phys.Chem