A 1D coordination polymer (CP), (TBA) [Bi(bp4do)Br₄] (1), was synthesized by the assembly of 4, 4' - bipyridine -N, N'-dioxide (bp4do) and Bi³⁺ (TBA⁺=tetrabutylammonium). 1 exhibits a red luminescence with a quantum yield of up to 69%. A solid-state thin-film sensor (1/PVP) with extremely high luminescence stability was prepared by combining 1 with polyvinyl pyrrolidone (PVP). 1/PVP has a wide - range sensing capability for 11 NH₃/amine vapors with rapid response. During the sensing process, its luminescence color changed from red to blue, which was easy for naked -eye observation. The sensing mechanism is NH₃/amine-induced collapse of the framework of 1. Furthermore, 1/PVP has been successfully applied to monitoring food freshness such as meat/aquatic products.

Two zero-dimensional inorganic-organic hybrids, (NMe₃CH₂Ph)₂[Zn(H₂O)₆](SO₄)₂ (1) and (NMe₃CH₂Ph)₄[Zn₂Cl₂(SO₄)₃] (2), were assembled from ZnSO₄ and trimethylbenzylammonium chloride. Both feature an inorganic-organic sandwich structure with organic layers formed via aromatic stacking. 1 contains a {[Zn(H₂O)₆](SO₄)₂}^2- hydrogen-bonded network, while 2 consists of binuclear zinc clusters. Both exhibited room-temperature phosphorescence. 1 showed a lifetime of 14.00 ms (invisible), whereas 2 displayed a lifetime of 290.00 ms with visible green afterglow. Furthermore, a series of host-guest doped afterglow materials was developed using compound 1 as the host matrix. Tuning the guest molecules enabled afterglow tuning from cyan to orange-yellow, with lifetimes enhanced up to about 65-fold versus the pristine host. Furthermore, the application of the doped systems in advanced anti-counterfeiting was preliminarily explored.