Fabrication of Highly Fluorescent Temperature-Sensitive Composites Based on a Synergistic Molecular Mechanism between Hydrogen-Bonded/AIEgen-Modified Conjugated Polymers and Polymer Substrates

The mechanism of intermolecular interaction between conjugated polymers (CPs) and a polymer matrix plays a decisive role in understanding and developing highly sensitive fluorescent temperature-sensing (FTS) materials. Therefore, a molecular mechanism based on a synergistic molecular mechanism, which is assisted by the interaction of an aggregation-induced emission luminogen (AIEgen) and hydrogen bonding between CPs and the matrix, is proposed and applied to the development of FTS composite materials. A series of highly sensitive FTS composites, which can be applied to different temperature ranges and scenarios, have been prepared from the perspective of molecular structure engineering based on an AIEgen- and uracil-group-modified CPs/polymer matrix composite system. In addition, the effectiveness and universality of the synergistic molecular mechanism can be proved by changing the molecular structure of optical CPs and the types of polymer substrates. Therefore, the synergistic molecular mechanism as a guide for molecular structure design can be proved to become a promising method for the preparation of highly sensitive FTS composite materials.