1,9-Pyrazoloanthrone as a Colorimetric and “Turn-On” Fluorometric Chemosensor: Structural Implications

A colorimetric and “turn-on” fluorescent chemosensor based on 1,9-pyrazoloanthrone specifically for cyanide and fluoride ion detection shows a remarkable solid state reaction when crystals of tetrabutylammonium cyanide and fluoride are brought in physical contact with 1,9-pyrazoloanthrone. X-ray crystal structures of 1,9-pyrazoloanthrone and complexes have been determined, and the ion sensing activity (detection limit of 0.2 and 2 ppb) has been inferred based on spectroscopic and structural features.一种基于1,9-吡唑蒽酮（1,9-pyrazoloanthrone）的比色型“开启式”荧光化学传感器（colorimetric and “turn-on” fluorescent chemosensor），可专一性用于氰根离子与氟离子的检测。当四丁基氰化铵（tetrabutylammonium cyanide）与四丁基氟化铵（tetrabutylammonium fluoride）的晶体与1,9-吡唑蒽酮发生物理接触时，该传感器会展现出显著的固态反应。目前已完成1,9-吡唑蒽酮及其复合物的X射线晶体结构测定，并通过光谱学与结构特征推导得到其离子传感活性，检测限分别为0.2与2 ppb。