RESUMEN
A series of new covalent organic frameworks (COFs) has been constructed step-by-step using a [(C3 + C2) + C2] strategy for the first time, all of which show selective fluorescence detection properties toward Fe3+ ions with the lowest limit of detection (LOD) down to 9.6 × 10-8 M. The fluorescence quenching is mainly attributed to the absorption competition quenching (ACQ) mechanism.
Asunto(s)
Estructuras Metalorgánicas , Iones , Límite de Detección , Espectrometría de Fluorescencia , HierroRESUMEN
A C3-symmetric benzotrithiophene tricarbaldehyde (BTT) is synthesized for the first time with a facile method, which is used to construct BTT-based covalent organic frameworks (COFs) with different pore sizes. Meanwhile, the structure transformations of the COFs under high-temperature ionothermal condition are studied systematically, and the relationships between the regularly changed structures of the further-cross-linked COFs and their supercapacitor performances are investigated. It turns out that dealing with COFs of designated structures under ionothermal condition is a great method to build highly conductive structure-controllable materials for electrochemical applications.