LDHs是一类典型的阴离子型超分子结构层状材料，其主体层板化学组成、层间客体的种类和数量及排列方式均可人为设计并精确控制，在获得新结构的同时获得新功能，或使材料性能得到极大强化。本项目针对LDHs的微观结构进行分子设计，将Zn、Ti等能与层板氧形成宽禁带化合物的金属元素引入层板，将具有紫外生色基团的功能客体引入层间，构筑超分子插层结构紫外阻隔材料，研究层板的紫外光学吸收性能和层间客体在主客体相互作用下的紫外吸收性能变化，以及客体立体构象在空间限域作用下发生变化时的增色和减色效应；对LDHs介观结构进行调控，研究粒径和表面性质对紫外线物理屏蔽性能的影响；构筑多级插层结构，研究对紫外线光学吸收和物理屏蔽的多重阻隔作用；将LDHs首次应用于抗紫外老化沥青制备，研究其对沥青抗紫外老化性能的作用规律。本课题对于构筑超分子结构紫外阻隔材料及高性能沥青的研究具有重要意义。

Layered double hydroxides (LDHs) are a typical class of intercalated material with supermolecular structure. The chemical composition of the host layers, the type, amount and arrangement of guest interlayer anions can be readily tailored and controlled, obtaining new materials with enhanced or new properties. In this project, the molecular design of microstructure is one of the main interests. Zn, Ti which can form high-gap compound with the layer oxides will be introduced into the host layers of LDHs, and the functional guests with UV chromophoric group will be intercalated into the gallery of LDHs, obtaining a supermolecular intercalated UV resistance material. The UV optical absorption ability of the layers and the influence of the host-guest intercalation on the UV optical absorption properities will be investigated. The hyperchromicity and hypochromicity of interlayer guests changing with the conformation under restricted space will also be studied. The mesostructure of LDHs will be adjusted to study the influence of particle size and surface properties on the UV physical screening ability. The multi-layer structure will be constructed to investigate the multiple UV resistance effect both in optical absorption and physical screening. Finally, this new intercalated LDHs will be added into asphalt to study the enhancement of the anti-UV aging ability of asphalt. The research work in this project will be very helpful for the construction of supermolecular intercalated LDHs materials and the preparation of asphalt with high performance.