Abstract: Disclosed are a flexible molecularly imprinted sensor for detecting zeatin riboside, a preparation method and use thereof. The preparation method includes preparing a laser-induced graphene pattern on a polyimide tape by a laser direct writing technology, and transferring the laser-induced graphene pattern onto polydimethylsiloxane, then modifying a composite material of zinc-aluminum layered double hydroxide and an iron-based metal-organic framework onto a working electrode, and then preparing a molecularly imprinted film on a surface of an electrode using o-phenylenediamine as a monomer and zeatin riboside as a template molecule, and eluting the template molecule to obtain the flexible molecularly imprinted sensor.

Abstract: Provided are a flexible molecularly imprinted sensor for in-situ and in-vivo detection of gamma-aminobutyric acid content in plants, and a preparation method and a detection method thereof. The flexible molecularly imprinted sensor includes: a flexible substrate and a graphene electrode unit, the graphene electrode unit being arranged on the flexible substrate, where the graphene electrode unit includes a conductive track, a working electrode, a counter electrode, and a reference electrode, where the counter electrode and the reference electrode are respectively located on two sides of the working electrode, and the working electrode is successively provided from inside to outside with a first modification layer, a second modification layer, and a third modification layer, the first modification layer including an AuNPs material, the second modification layer including an Fc-Ni3(HITP)2-ZnFe-LDH material, and the third modification layer including a molecularly imprinted polymer (MIP) material.