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Photoinduced Amplification of Separation, Analysis, and Sensing by Using Photochromic Ionophores

使用光致变色离子载体进行光诱导放大分离、分析和传感

基本信息

批准号：
15350043
负责人：
KIMURA Keiichi
金额：
$ 9.41万
依托单位：
Wakayama University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2005
项目状态：
已结题

项目摘要

(1)Design of photochromic crown ethers and photocontrol of their metal ion complexationVarious crown ether derivatives incorporating spirobenzopyran moiety, which are called crowned spirobenzopyrans, were designed and their photoresponsive metal-ion complexing behavior was investigated. Crown ether derivatives incorporating triphenylmethane moiety, crowned Malachite Green leuconitrile, realized all-or-none type photocontrol of their metal ion complexation on turning on and off UV light.(2)Photoinduced amplification in extraction-spectrophotometry of metal ions.It was found that crowned spirobenzopyrans are promising extraction-specirophotometric reagents for metal ions and that their extractability can be changed by photoirradiation. The photochromic crown ethers were also successfully applied to extraction spectrophotometric flow-injection analysis, the extractability and ion selectivity of which can be controlled by photoirradiation on the extraction coil. Moreover, photo-driven and photo-controlled membrane transports of alkali metal ions were also realized using crowned spirobenzopyrans.(3)Applications of micelle solutions containing photoresponsive crown ethers to analytical and separation chemistryMicelle solutions, in which a crowned spirobenzopyran derivative was dissolved in a surfactant aqueous solution, were applied to metal ion sensing based on absorption and fluorescence spectra. This metal ion sensing using the micelle solution suggested a possibility for highly selective alkali-metal-ion sensing. It was also found that photoirradiation modified the micellar structure, size, and aggregation number in the micelle solutions containing a crowned spirobenzopyran derivative. This in turn indicated that the uptake amount of organic compounds can be controlled photochemically by using the micellar systems.

(1)光致变色冠醚的设计及其金属离子络合的光控制设计了多种含有螺苯并吡喃基团的冠醚衍生物，称为冠状螺苯并吡喃，并研究了它们的光响应金属离子络合行为。含三苯基甲烷部分的冠醚衍生物，冠孔雀石绿腈，在打开和关闭紫外光时实现了金属离子络合的全或无型光控制。(2)金属离子提取分光光度法中的光致放大。结果表明，冠螺苯并吡喃是一种很有前途的金属离子提取比光度试剂，其可提取性可通过光照射而改变。光致变色冠醚也成功地应用于萃取分光光度流动注射分析，其可萃取性和离子选择性可通过光照射萃取线圈来控制。此外，还利用冠状螺苯并吡喃实现了碱金属离子的光驱动和光控制膜传输。(3)含有光响应冠醚的胶束溶液在分析和分离化学中的应用。将冠状螺苯吡喃衍生物溶解在表面活性剂水溶液中的胶束溶液应用于基于吸收光谱和荧光光谱的金属离子传感。这种使用胶束溶液的金属离子传感表明了高选择性碱金属离子传感的可能性。还发现光照射改变了含有冠螺苯吡喃衍生物的胶束溶液中的胶束结构、大小和聚集数。这反过来表明，有机化合物的吸收量可以通过使用胶束系统光化学控制。