Benzo-15-crown-5 linked spirobenzopyran. I Photocontrol of cation-binding ability and photoinduced membrane potential changes.
Benzo-15-crown-5 linked spirobenzopyran. I Photocontrol of cation-binding ability and photoinduced membrane potential changes.
复制标题
Benzo-15-crown-5 连接的螺苯并吡喃。
DOI：
10.1246/bcsj.59.1953
复制
发表时间：
1986
影响因子：
4
通讯作者：
T. Osa
中科院分区：
文献类型：
--
作者：
H. Sasaki;A. Ueno;J. Anzai;T. Osa
合成了苯并冠醚连接的螺苯并吡喃（1）及其类似物（2）。1与碱金属离子（Na+，K+，Rb+，Cs+）的结合能力随紫外光照射而改变，而2在紫外光照射前后均不与这些阳离子结合。包封1或2的增塑聚氯乙烯（PVC）膜显示通过UV和可见光照射可逆的光致电位变化。在1和2的膜中，螺苯并吡喃均显示正常的光致变色性。在1的情况下，光致电位变化的大小取决于碱金属阳离子的种类和浓度。而包封2的膜的光诱导电位变化幅度几乎不受碱金属阳离子种类和浓度的影响。用冠醚和螺吡喃的协同作用解释了实验结果。
Benzocrown ether-linked spirobenzopyran (1) and its analogue (2) which has no crown ring were synthesized. The binding abilities of 1 for alkali metal cations (Na+, K+, Rb+, Cs+) were found to change by UV light irradiation, while 2 did not bind these cations before and after UV light irradiation. The plasticized poly(vinyl chloride) (PVC) membrane entrapping 1 or 2 showed photoinduced potential changes reversibly by UV and visible light irradiation. In the membranes of both 1 and 2 showed normal photochromism of spirobenzopyran. In the case of 1, the magnitude of the photoinduced potential change depended upon kind and concentration of alkali metal cations. However, the magnitude of photoinduced potential change of the membrane entrapping 2 was hardly affected by kind and concentration of alkali metal cations. The results are explained in terms of cooperative action of both crown ether and spiropyran.