酰胺盐超分子聚合物的荧光性能和应用OA

In contrast to conventional supramolecular polymers focusing on mechanical properties,this work inves-tigates the photophysical performance of supramolecular materials,reporting a fully water-soluble aliphatic supramo-lecular compound(PA84S)self-assembled from octanediamine and succinic acid via ionic and hydrogen bonds.PA84S exhibits unique concentration-dependent and excitation-dependent fluorescence in aqueous solution,originat-ing from cluster-triggered emission within the supramolecular structure.By integrating dynamic light scattering,pyrene fluorescence probing,Zeta potential,and conductivity measurements,the self-assembly behaviors of PA84S were systematically characterized,confirming the formation of ordered aggregates through synergistic interactions in water and determining the critical aggregation concentration for fluorescence.The emission enhancement is directly related to heteroatom clusters constructed by ionic bonds(—COO-·+NH3-)and hydrogen bonds,where through-space con-jugation creates luminescent channels and restricts intramolecular motions.Leveraging this unique fluorescence,PA84S serves as a novel supramolecular probe for selective and highly sensitive detection of Fe3+ions and tetracy-cline.This work provides a new strategy for constructing water-soluble luminescent materials from non-conjugated building blocks and demonstrates the potential of supramolecular assemblies in fluorescence sensing applications.