So far, a few non-conjugated luminescent copolymers are reported. PL of maleic anhydride (MAh)-containing copolymers have been demonstrated by several groups. The copolymers of MAh and various comonomers, to name a few, vinyl acetate, acetoxy styrene, vinyl carbazole, N-vinyl-2-pyrrolidone, etc., exhibited remarkable intrinsic PL. You and coworkers synthesized copolymers with intrinsic PL via reversible addition-fragmentation chain transfer (RAFT). Ma and coworkers reported the room-temperature phosphorescence (RTP) of acrylamide and brominated olefins copolymers. The generation of RTP is attributed to the rigidified conformation that facilitates luminescence due to the space electronic connections supplied by the NH2 and C=O units. Zhang and coworkers demonstrated emission of perfluorosulfonate ionomers (PFSIs), a commercially available copolymer of tetrafluoroethylene and perfluorosulfonic acid, at solid state. Very recently, Zhang and coworkers reported color-tunable aliphatic polyesters with quantum yield (ΦF) as high as 38 %. Besides vinyl-based polymers, some nonaromatic polyurethanes (PUs) synthesized via condensation polymerization also possess intrinsic PL. Yuan and coworkers synthesized PUs by the addition reaction between diisocyanates and short-chain glycols, and bright blue light can be observed in the concentrated solutions, as-prepared solids, and cast films of the PUs, indicating the features of concentration-enhanced emission and aggregation-induced emission (AIE). As mentioned above, the key point to approach emission of non-luminescent polymers is to introduce electron-rich heteroatoms and intense interactions and to increase the rigidity of backbones. Methylenelactide (MLA) is a radically polymerizable vinyl-lactide derivative. Due to the presence of bulky lactone rings, the chain mobility of poly(methylenelactide) (PMLA) is heavily restricted, resulting in a high Tg of 244 ℃. Therefore, it is expected that copolymerization with MLA as the secondary monomer could effectively improve the rigidity of chains. Vinyl pyridine is a typical polar vinyl monomer that is important in many applications due to the ability of their polymers to form complexes of the electron-rich pyridine ring. Although vinyl pyridine monomers and their polymers are almost non-luminescent at a neutral state, the aromatic heterocyclic ring of pyridine makes it a potential luminophore.