Synthesis And Properties Of Polymer/Oligomer Organic Field-effct Transistor Containing Heteroatom In Main Chain

Field-effect transistor (FET), which is an important component of the integratedchip unit, plays a crucial role in the development of microelectronics. OFET (Organicfield-effect transistors) has been becoming an important subject of the FET for thedefects of the inorganic FET. The so-called conductive polymer open up a newresearch and application area for field-effect transistor. Significant progress has beenmade for the research of the polymer field-effect transistors because of its uniqueadvantages. The polythiophene semiconductor material is a typical p-type FETmaterial, and the electron-deficient polymer which contain complex azetidinylpolymer has also been synthesized. The thiazole-quinoline group is anelectron-deficient unit, wihch thermal stability and chemical stability is good, and itcan aslo change the electrochemical properties of the semiconductor by modifying themolecular structure. In this paper, the main purpose is to the design novelthiazole-quinoline monomers containing heterocyclic and then synthesize servaralpolymer of which the main chain containing triple bond and Pt. At the same time,their oligomers and copolymer were synthesized. The target products werecharacterized by FT-IR, n NMR. The optical properties, electrochemical propertiesand thermal stability of polymers can be test by UV-vis, CV, TGA. The main reaserchcontents are as follows:1. We designed and synthesized monomer containing heterocyclic, and polymercontaining triple bond and Pt (P1-P3) through the the Sonogashira Reaction.And thenoligomers (O1, O2) were prapared. Finally, we test the corresponding FETparameters, and study the optical properties, thermal stability and electrochemicalperformance. The results show that the thermal decomposition temperature of thepolymers were above300℃with good thermal stability, the maximum absorptionpeak range from755nm to884nm, the low bandgaps wre1.27-1.52eV, andoligomers were with liquid crystal properties.2. Copolymers (P4-P9) containing heteroatom were designed and synthesized. Pt inconjuated polymer was substituted by different group. Finally, we test its opticalproperties, thermal stability and electrochemical performance. Simultaneously wecompare the difference between polymer and copolymer. The results show that thedecomposition temperature of organic metal polymers was higher than decompositiontemperature of copolymers,and absorption show red shift. Pt in the polymer play a role in broadening the absorption spectrum, improving the thermal stability of thepolymer at the same time.