Preparation Of Novel AgTCNQ Nanomaterial By Template Method And Study On Its Growth Mechanism

Bistable state behavior of MTCNQ(M=Cu, Ag; TCNQ=7,7,8, 8-tetracyanoquinodimethane) had been found since 1979 s, much more research had been carried out based on this compound. Applications of this compound are as follow: memery device, field-effect device, flexible device, photocatalysis and antibiotic. In order to improve the properties in these applications, many methods had been developed to prepare the materials, such as, spontaneous electrolysis technique, electrochemical crystallization, photocrystallization, AAO template and soft template. Among them soft template method was a newly developed one. People have fabricated many effective memory devices through these methods, but we could only prepare rod-like structure, what’s more, manipulation was complex and expensive devicees were needed, at last, we could’t tune the morphology of this material. As we know, morphology has a great impact on the function of materials. However, the developed methods could’t applied to get different morphology, which has limit the research based on this material. So, finding a new methd to prepare new AgTCNQ nanostructure, even realize the control growth seems important.We have prepared novel morphologies of AgTCNQ by using soft template and controlled its growth. What’s more, we have used AAO template to fabricate AgTCNQ nanoarray by dipping reaction. The main contexts were as follows:1. Preparing novel AgTCNQ nanostructure by soft template method in aqueous medium, and studing on its growth mechanism.In this part, we have used P123 as template, Ag NO3 as Ag source, sodium citrate as reduction to get novel AgTCNQ nanostructure. By tunning the concentration of P123, we have realized the control of the morphology of AgTCNQ. With the increasing of the concentration of P123, the AgTCNQ have changed from spindle to cone. Base on the study of the role of P123 and sodium citrate, a mechanism, namely ligand-limited facet growth mechanism, has been proposed.2. Solution method to prepare AgTCNQ nanoarray by using AAO template.We have fabricated AAO template with 100 nm pore size by using anodic oxidation, the Ag nanrods were deposited by electrochemistry. Then the template was dipped in TCNQ solution, the AgTCNQ nanoarray was got. During the experiment, we can prepare Ag-AgTCNQ hybrid structure by controlling the dipping time.