Polymer material with light-regulated reversible shape transformation and its preparation method and application

Abstract

The invention discloses a polymer material with light-regulated and reversible shape transformation, a preparation method and application thereof. The present invention is based on the trans-cis photoisomerization transformation of azobenzene, through the design and synthesis of light-responsive small molecule surfactants containing azobenzene groups, which are used for the limited self-assembly of block copolymer emulsions, changing The wavelength and irradiation time of light can realize the reversible transition between different morphologies of polymer assemblies, which provides a new method for regulating the morphology of polymers. At the same time, loading drug molecules into polymer assembly materials can realize the programmed release of drugs under light control.

Description

Polymer materials with light-tunable reversible morphology transformation and their preparation methods and applications technical field The invention belongs to the field of functional polymer materials, particularly a kind of polymer of light regulation and reversible morphology transformation Materials and preparation methods and applications thereof. Background technique In recent years, deformable smart materials have great applications in detection, storage, optical systems, and self-healing. With the prospect and attract people's attention. Block copolymers can undergo microscopic phase separation and multiplication at the molecular chain scale in specific solvents. self-assembly to form structurally rich nano-aggregates, such as spheres, rods, and tubes, for drug loading and controllable release. It has important application value in the fields of radiotherapy, tissue engineering, intelligent sensing, intelligent electrochemical system and biological detecti...

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Problems solved by technology

Researchers have realized the transformation of the morphology of polymer assemblies by light regulation, but the morphology of the prepared polymer assembly materials is irreversible, which limits the practical application of polymer materials to a large extent.

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