Fang-Ming Wang

The industrial application of highly toxic hydrazine (NH2NH2) poses a significant threat to human health and the environment, which highlights the critical need for selective detection and effective remediation. In this study, we introduced NBP, a naphthalimide-based chemical sensor engineered for the rapid visual detection of NH2NH2 through a nucleophilic addition-elimination mechanism. NBP exhibited an exceptionally fast response time of 5 seconds, a low detection limit of 35.7 nM, and excellent selectivity over interfering analytes. The probe was successfully integrated into test strips and cotton swabs, enabling dual-mode analysis as well as smartphone-assisted quantitative readouts. Moreover, it proved effective for quantifying NH2NH2 in diverse real-world samples and demonstrated promising applicability for bioimaging in both plant tissues and living cells. Notably, a polyvinyl alcohol (PVA) hydrogel embedded with NBP not only enabled real-time monitoring but also achieved the simultaneous removal of NH2NH2, achieving a remarkable adsorption capacity of 20% per cm3 over 24 h. Collectively, this work presented a versatile and efficient strategy for the integrated detection and removal of NH2NH2, holding considerable promise for environmental surveillance and food safety assurance.

Four AIO-structured cuprous iodide hybrid materials 1-4 were prepared by solvent evaporation method at RT. They have good thermal stability and near-white-light emission. They can be potentially used for non-rare earth element lighting phosphors.

Five new copper iodide complexes (1-5) were prepared by the solvent evaporation method of cuprous iodide with derivatives of 2-(1H-imidazol-1-yl) pyrimidine (L1-L5). All of them are daylight white emissions among 5079 - 6483 K and have good thermal stabilities. Their internal quantum yields (IQYs) range from 17% to 66%. By modifying the ligand’s pyrimidine ring with different groups, they successfully adjust distances of Cu…Cu in Cu2I2 rhomboid dimers and further influences their optical properties, which is confirmed by electronic structure calculations employing density functional theory (DFT). This research will be very helpful for understanding the structure-activity relationship of copper (I) iodide hybrid materials. And all these complexes can be used in solid-state lighting and other optoelectronic devices.

Four 0D inorganic-organic hybrid luminescent materials (1-4) were synthesized by the self-assembly of cuprous iodide with derivatives of 2-(1H-imidazol-1-yl) pyrimidine (L1-L4). All of them are warm-light (2763 K- 5208 K) and good thermal stabilities (>200°C). Density functional theory (DFT) calculations demonstrated that their luminescence processes was metal-to-ligand charge transfer (MLCT). And difference of two methyl group locating on ligands can obviously influence on their luminescence properties. Notably, complex 3 is warm white emission material with CIE coordinates (0.36, 0.41) closest to the standard white-light point (0.33, 0.33). All these testify that 1-4 can be used as promising candidates for solid state lighting (SSL) materials.

Herein, two new cuprous iodide hybrid materials, (CuI₃NCCH₃)(C₂₀H₂₆N₂) (1) and (Cu₂I₄)(C₂₀H₂₄Cl₂N₂) (2), were synthesized with two bivalent DABCO ligands L1 and L2 by solvent evaporation method at room temperature. They all exhibited broad phosphorescence with emission maxima at 546 nm and 608 nm, respectively, and lifetimes of 16.74 µs and 5.90 µs. Noticeably, complex 1 remained non-emissive due to quenching by the coordinated acetonitrile molecule, while 2 displayed intense red luminescence with a high quantum yield of 70.50%, modifying chlorine on benzyl ring of ligands. DFT calculations revealed halide-to-ligand charge transfer as the emission mechanism in 2. This study can provide ideas and theoretical basis for the regulation of cuprous iodide cluster luminescent materials.

Herein, four new cuprous iodide hybrid materials 1–4 were synthesized at room temperature using two types of ligands: imidazoles and triphenylphosphine. Photoluminescence results showed that all the materials exhibited blue emissions with high internal quantum yields (IQYs) ranging from 51% to 64%. Surprisingly, the introduction of triphenylphosphine induced strong aggregation-induced emission (AIE). Additionally, the luminescence lifetimes of these materials were significantly longer, ranging from 11.53 μs to 24.33 μs, which is much longer than those of previous materials. These findings suggest that these materials could be potential candidates for non-rare earth element (REE) lighting phosphors.

Aim and Objectives: There are different approaches to the synthesis of benzimidazole. In this article, five new benzimidazole derivatives, BMPO, Me-BMPO, Di-MeBMPO, F-BMPO and Cl-BMPO where (BMPO=3-[(1H)-benzo[d]imidazol-2-yl]pyridin-2(1H)-one), have been prepared. Another study was carried out on luminescence properties and their potential applica-tions for the detection of transition metal ions. Materials and Methods: From the one-pot synthesis approach, all the derivatives of the benzim-idazole compounds were obtained. The compounds were characterized using HRMS, 1HNMR, 13CNMR, and X-ray crystallography. Herein, a mechanism has been deciphered by predicting the release of HCl(g). Results: All compounds showed a strong deep blue emission when dissolved in dimethylacetamide (DMA), with emission wavelengths at 423, 428, 435, 423, and 421 nm, and half-times of 3.64, 2.77, 2, 19, 3.42 and 3.52 ns, respectively. In addition, their emission quantum yields were deter-mined to be 72, 50, 42, 73 and 80%. Conclusion: Five new benzimidazole derivatives, BMPO, Me-BMPO, Di-MeBIPO, F-BIPO, and Cl-BIPO, have been successfully synthesized by the one-pot synthesis method, and their struc-tures are characterized and confirmed. The compounds exhibited exceptional luminescence by emitting a strong blue light in DMA with high fluorescence quantum yields between 42~80%.