Full‐Color Emissive Zirconium‐Organic Frameworks Constructed via in situ “One‐Pot” Single‐Site Modification for Tryptophan Detection and Energy Transfer

Organic linker‐based luminescent metal‐organic frameworks (LMOFs) have received extensive studies due to the unlimited species of emissive organic linkers and tunable structure of MOFs. However, the multiple‐step organic synthesis is always a great challenge for the development of LMOFs. As an alternative strategy, in situ “one‐pot” strategy, in which the generation of emissive organic linkers and sequential construction of LMOFs happen in one reaction condition, can avoid time‐consuming pre‐synthesis of organic linkers. In the present work, we demonstrate the successful utilization of in situ “one‐pot” strategy to construct a series of LMOFs via the single‐site modification between the reaction of aldehydes and o‐phenylenediamine‐based tetratopic carboxylic acid. The resultant MOFs possess csq topology with emission covering blue to near‐infrared. The nanosized LMOFs exhibit excellent sensitivity and selectivity for tryptophan detection. In addition, two component‐based LMOFs can also be prepared via the in situ “one‐pot” strategy and used to study energy transfer. This work not only reports the construction of LMOFs with full‐color emissions, which can be utilized for various applications, but also indicates that in situ “one‐pot” strategy indeed is a useful and powerful method to complement the traditional MOFs construction method for preparing porous materials with tunable functionalities and properties.