given by an underlying mechanism that is distinct from typical CTE. We speculate that the emission of PLVPs is attributed to the presence of MLA comonomers enhanced the luminescence of pyridine rings via intra-chain interactions and the improved chain rigidity of copolymers. In this case, a single PLVP chain acts as an individual luminophore, namely, single-chain luminogen. With the increased concentration of the solution, the aggregation of PLVP chains leads to the energy transfer via inter-chain interactions, resulting in the quenching and red-shifting of emission. Also, the aggregation of PLVP chains gives through-space conjugations (TSC)