Preparation and application of amino-functionalized graphene oxide/azo polymer composite waveguide material

Abstract

The invention belongs to the field of polymeric nanocomposite material synthesis, and relates to preparation and application of an amino-functionalized graphene oxide / azo polymer composite waveguide material. The preparation comprises the following steps: firstly preparing azo chromophore 4-(4-nitro-alkenyl)phenyl-1,3-diamine from paranitroaniline and m-phenylenediamine, and then preparing a isocyano-terinated azobenzene prepolymer from NAPD and IPDI in the presence of T-12; afterwards ultrasonically exfoliating graphite oxide to obtain graphene oxide dispersion liquid, and reacting with quadrol under the action of 2-(7-azo benzo triazole)-N, N, N minute, N minute-tetramethyluronium hexafluorophosphate, so as to obtain amino-functionalized graphene oxide; adding the carbimide radical blocked azobenzene prepolymer into EAGO, and performing vacuum drying. A thermo-optical coefficient (dn / dT) of the prepared amino-functionalized graphene oxide / azo polymer composite waveguide material is greater than that of a common organic material and is more than 10 times that of a traditional inorganic material, and the composite waveguide material can be applied to the development of novel digital thermal optical switches with low drive efficiency and higher response speed.

Description

technical field

[0001] The invention belongs to the field of synthesis of polymer nanocomposite materials, and relates to the preparation of functionalized graphene oxide and azo polymer series compounds, in particular to the preparation and application of an amino functionalized graphene oxide / azo polymer composite waveguide material . Background technique

[0002] In recent years, the research hotspots of waveguide optical switches mainly focus on electro-optic switches and thermo-optic switches. Waveguide-type electro-optic switches are fast, but require harsh polarization technology, which is related to polarization and has high cost. For a thermo-optic switch, the thermo-optic effect is used to modulate the light field to realize the switching function. The thermo-optic coefficient of the material is the main factor affecting the driving power and response speed of the thermo-optic switch. Commonly used thermo-optic switch materials are inorganic (such as lithium nioba...

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