Development of an Advanced Equipment for Systematic Measurement of Photochemical Properties

光化学性质系统测量先进设备的研制

• 批准号: 06554029
• 负责人: YAMAZAKI Iwao
• 金额: $ 4.8万
• 依托单位: HOKKAIDO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research (B)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06554029/
• 关键词: Fluorescence spectrophotometer; Organic thin films; Photochemisty; Fluorescence polarization

Recent acvance of photochemistry and photophysics is directed toward researchs of development of new photoresponsive materials for optical memories and optical processrors. In these researches, photochemical properties like photoreaction quantum yields and polarization are fundamental. The purpose of the present study is to assemble an equipment systematically designed for measuring photochemical properties. The equipment is conposed of the following three parts.(1) Monochromatic excitation light sources Two light sources are employed : a lambda-tunable laser (Ti : sapphire laser) for photochemical reactiion and a 150-W Xe light for fluorescence measurement.(2) High-sensitivity fluorescence spectrophotometer Weak fluorescence is dispersed by a polychromotor (F25) and is detected with a linear-array multichannel photon-counting detector (Hamamatsu IMD-PC) which is capable of detecting emission of single-photon level.(3) Sample compartment and its peripherals A sample is set inside a vacuum compartment with three mechanical shutters switching the light paths from the above two light sources and to the polychromator.The equipment was totally asembled and was tested the sensitivity. It was found that the equipment has a sensitivity higher 100 times than an conventional fluorescence spectrophotometer.

光化学和光物理的最新进展是研究开发用于光存储器和光处理器的新型光响应材料。在这些研究中，光化学性质如光反应量子产率和偏振是基本的。本研究的目的是组装一个系统设计的测量光化学性质的设备。该设备由以下三部分组成。(1)单色激发光源采用两种光源：用于光化学反应的可调谐激光器（钛宝石激光器）和用于荧光测量的150-W单色光。(2)高灵敏度荧光分光光度计弱荧光通过多色马达（F25）分散，并通过能够检测单光子水平发射的线性阵列多通道光子计数检测器（Hamamatsu IMD-PC）检测。(3)样品室及其外围设备将样品置于真空室中，真空室中有三个机械快门，用于切换从上述两个光源到多色仪的光路。结果表明，该装置的灵敏度比传统的荧光分光光度计高100倍。

项目成果

N.Ohta, Y.Ogata, S.Okazaki and I.Yamazaki: "External electric field effects on absorption and fluorescence spectra of indocarbocyanine in LB films" Chem. Phys. Lett.224. 355-362 (1995)

N.Ohta、Y.Ogata、S.Okazaki 和 I.Yamazaki：“外部电场对 LB 膜中吲哚羰花青吸收和荧光光谱的影响” Chem。

N.Ohta: "Interlayer energy transfer between chromophoric carbazole and oxacyanine in LB films:site selectivity of trapping" Thin Solid Films. (in press). (1995)

N.Ohta：“LB 膜中发色咔唑和氧花青之间的层间能量转移：捕获的位点选择性”固体薄膜。

N.Ohta,S.Okazaki.S.Yoshinari,I.Yamazaki: "Interlayer energy transfer between chromophoric chromophoric carbacole and oxacyanine in LB films" Thin Solid Films. 258. 305-312 (1995)

N.Ohta，S.Okazaki.S.Yoshinari，I.Yamazaki：“LB 膜中发色卡巴科尔和氧花青之间的层间能量转移”固体薄膜。

I.Yamazaki: "Photochemistry in LB films and its application to molecular switching devices" Pure & Appl.Chem.67. 209-216 (1995)

I.Yamazaki：“LB 薄膜中的光化学及其在分子开关器件中的应用” Pure

N.Ohta: "Stark shift in absorption spectra of LB mixed monolayer films:New finding of a complex formation of chromophoric oxacyanine" Chem.Phys.Lett.229. 394-400 (1994)

N.Ohta：“LB 混合单层膜吸收光谱的斯塔克位移：发色氧花青复合物形成的新发现”Chem.Phys.Lett.229。