A construction of compact measurement system of electroabsorption and electroemission spectra and the application to the investigation of photoinduced function of materials

为了研究电场对光化学反应的影响及其与材料光致功能的关系，开发电吸收光谱（E-A）和电发射光谱（E-E）测量系统，使光化学或分子光谱学专业人员以及该领域的外行都能方便地测量光谱，这是非常重要的。本研究通过对本实验室分别构建的E-A测量系统和E-E测量系统的改进，将E-A和E-E测量系统对接，研制出了一种小型的E-A和E-E光谱测量装置。这台仪器是由一台个人电脑控制的。此外，还开发了E-A和E-E谱分析软件。因此，非专业科学家可以很容易地测量光谱和分析数据，并且可以很容易地获得激发或发射后电偶极矩或分子极化率的变化幅度。利用该系统，研究了电场对分子内和分子间光致电子转移的光化学反应的影响，特别是在电子供体和受体的亚甲基连接化合物或随机分布的供体和受体系统中。

In order to investigate of the electric field effects on photochemical reaction and their relation to photoinduced function of materials, developments of measurement system of electroabsorption spectra (E-A) and electroemission spectra (E-E), with which not only specialists of photochemistry or molecular spectroscopy but also outsiders in this field can easily measure the spectra, are very important.In the present research, a compact apparatus for the measurement of the E-A and E-E spectra has been developed and manufactured by improving the E-A measurement system and E-E measurement system, which were separately constructed in our laboratory, and by a docking of these two measurement systems. The apparatus is controlled by a personal computer. Further, a software with which the E-A and E-E spectra can be easily analyzed has been also developed. Therefore, nonprofessional scientists can easily measure the spectra and analyze the data, and the magnitude of the change in electric dipole moment or molecular polarizability following excitation or emission can be easily obtained with this system.By using this system, electric field effects on photochemical reactions of intra- and intermolecular photoinduced electron transfer have been examined, especially in methylene-linked compounds of electron donor and acceptor or randomly distributed system of donor and acceptor.