Host-guest photochromic polythiophene derivative as well as preparation method and application thereof

The invention relates to the field of organic polymer functional materials, and discloses subject-guest photochromic polythiophene as well as a preparation method and application thereof. The polythiophene derivative has a structure as shown in a formula (I). The polythiophene derivative with the structure as shown in the formula (I) has good water solubility, and can be combined with cucurbit [7] uril (CB [7]) under the driving of interaction of a subject and an object to generate a color change behavior. The host-guest interaction can be used for preparing a non-covalently driven one-dimensional molecular line, and meanwhile, based on the color change behavior, freshness monitoring of aquatic products can be realized. # imgabs0 # 本发明涉及有机高分子功能材料领域，公开了一种主客体致变色聚噻吩及其制备方法与应用。该聚噻吩衍生物具有式(I)所示结构。本发明提供的该式(I)所示结构的聚噻吩衍生物具有良好的水溶性，能够在主客体相互作用的驱动下与葫芦[7]脲(CB[7])结合发生变色行为。该主客体相互作用可用于非共价驱动的一维分子线的制备，同时基于此变色行为，可以实现水产品的新鲜度监测。#imgabs0#