Photoresponsive ion extraction/release systems: dynamic ion optodes for calcium and sodium based on photochromic spiropyran.
Photoresponsive ion extraction/release systems: dynamic ion optodes for calcium and sodium based on photochromic spiropyran.
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DOI：
10.1021/ac4000283
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发表时间：
2013-03-05
影响因子：
7.4
通讯作者：
Bakker, Eric
中科院分区：
文献类型：
--
作者：
Mistlberger, Guenter;Xie, Xiaojiang;Pawlak, Marcin;Crespo, Gaston A.;Bakker, Eric
光响应离子提取/释放系统（PRIONERS）是一种非常有趣的工具，用于对生物材料进行局部和时间控制的化学扰动。我们在这里报告我们关于光触发钙和钠交换材料的第一个结果。这种材料存在两种不同的状态（“开”和“关”），具体取决于照明的波长。我们结合使用光谱和电化学方法来更好地了解光活性化合物活化时触发的离子交换反应所涉及的动态过程。离子交换的驱动力是光诱导的发色离子载体的酸度变化。用紫外线激活会在膜中产生 pKa 增加的物质。质子被吸入膜中，同时离子被排出。系统的选择性由所使用的离子载体决定。与基于光响应离子载体的系统相比，这里提出的概念几乎适用于存在离子载体的任何感兴趣的离子。
Photoresponsive ion extraction/release systems (PRIONERS) represent a highly interesting tool for the localized and time-controlled chemical perturbation of biological materials. We report here on our first results on phototriggered calcium and sodium exchanging materials. Such materials exist in two distinct states (“on” and “off”), depending on the wavelength of illumination. We used a combination of spectroscopic and electrochemical methods to obtain a better understanding of the dynamic processes involved in the triggered ion-exchange reaction upon activation of the photoactive compound. The driving force for the ion exchange is the light-induced acidity change of the chromoionophore. Activation with UV light generates a species in the membrane with an increased pKa. Protons are pulled into the membrane, and at the same time, ions are expelled. The selectivity of the system is determined by the employed ionophore. In contrast to photoresponsive ionophore-based systems, the concept presented here is applicable for virtually any ion of interest for which an ionophore exists.
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影响因子：
7.4
作者：
Evans, L;Collins, GE;Winkler, JD
通讯作者：
Winkler, JD
DOI：
10.1007/bf01195719
发表时间：
1982-01-01
期刊：
JOURNAL OF CRYSTALLOGRAPHIC AND SPECTROSCOPIC RESEARCH
影响因子：
--
作者：
NEUPERTLAVES, K;DOBLER, M
通讯作者：
DOBLER, M
影响因子：
5.2
作者：
Kumar S;Hernandez D;Hoa B;Lee Y;Yang JS;McCurdy A
通讯作者：
McCurdy A
影响因子：
3.3
作者：
Shiraishi, Yasuhiro;Itoh, Masataka;Hirai, Takayuki
通讯作者：
Hirai, Takayuki
影响因子：
4.2
作者：
MCCARRICK, M;HARRIS, SJ;DIAMOND, D
通讯作者：
DIAMOND, D