Synthesis of an optically switchable salicylaldimine substituted naphthopyran for selective and reversible Cu2+ recognition in aqueous solution

Priya Ranjan Sahoo; Satish Kumar

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Synthesis of an optically switchable salicylaldimine substituted naphthopyran for selective and reversible Cu2+ recognition in aqueous solution

机译：用于在水溶液中选择性和可逆Cu2 +识别的光学可切换水杨酰胺取代的萘甲烷的合成

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A light controlled reversible switch for copper ion was synthesized by substituting photochromic naphthopyran with a salicylaldimine moiety. The naphthopyran based photoreversible receptor was characterized using IR, NMR, HRMS and single crystal X-ray crystallographic techniques. The photochromic properties of the receptor under light irradiation were investigated by UV-visible spectroscopy. The affinity towards transition metal ions in both closed and open forms were determined. The open form of the receptor displayed an increased affinity towards copper ions. A 3.25 × 10 ~(4) fold difference in binding affinity for copper ions between the closed and open forms in aqueous methanol solution suggested that the receptor can act as a selective photoswitch for copper ions. Theoretical investigations at the molecular level supported the experimental observations.

机译：通过用水杨酰胺部分用光致变色萘丙烷来合成用于铜离子的光控制可逆开关。基于萘甲烷的光探测受体使用IR，NMR，HRMS和单晶X射线晶体技术进行了表征。通过UV可见光光度研究了受体在光照射下的光致变色特性。测定闭合和开放形式两种过渡金属离子的亲和力。受体的开放形式显示对铜离子的亲和力增加。 3.25×10〜（4）倍甲醇溶液中封闭和开放形式之间的铜离子的结合亲和力的折叠差异表明受体可以作为铜离子的选择性光电接触。分子水平的理论研究支持实验观察。

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《RSC Advances》 |2016年第24期|共10页
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Priya Ranjan Sahoo; Satish Kumar;
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1. Synthesis of an optically switchable salicylaldimine substituted naphthopyran for selective and reversible Cu2+ recognition in aqueous solution [J] . Sahoo Priya Ranjan, Kumar Satish RSC Advances . 2016,第24期

机译：光学可转换的水杨醛亚胺取代的萘并吡喃的合成，用于水溶液中的选择性和可逆性识别Cu2 +
2. A reversible colourimetric and selective fluorescent chemosensor for the cascade recognition of Cu2+ and H2PO4- in aqueous solution [J] . Wei Taibao, Li Hui, Wang Qingqing, Supramolecular chemistry . 2017,第1a2期

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3. The direct synthesis of a substituted naphthopentathiepin for selective Co2+ ion recognition in aqueous solution [J] . Arora Harshit, Sahoo Priya Ranjan, Kumar Arvind, Journal of Inclusion Phenomena and Macrocyclic Chemistry . 2019,第1a2期

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Synthesis of an optically switchable salicylaldimine substituted naphthopyran for selective and reversible Cu2+ recognition in aqueous solution

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