Huai-Wei Wang

Planar chiral [2.2]paracyclophanyl-based 4H-pyran-4-one and 4-(dicyanomethylene)-4H-pyran derivatives ((R_p)/(S_p)-PCP-2 and (R_p)/(S_p)-PCP-6) were designed and synthesized. Based on their structure- and solvatochromism-dependent tunable photophysical properties, PCP-2 and PCP-6 can serve to construct an acid-induced artificial light-harvesting system with arbitrarily tunable visible emission. By incorporating the planar chirality, acid-induced white circularly polarized luminescence materials were achieved using Förster resonance energy transfer (FRET) strategy. Furthermore, the materials can be used to fabricate white organic light-emitting diodes (WOLEDs).

The catalytic protocol of Cp*Rh ^III -catalyzed heteroarylation of N -(2,6-difluorophenyl)-1 H -indole-1-carboxamides and heterocyclic boronates, synthesizing (NH)-indole-heteroaryl derivatives without extra steps to remove the auxiliary, is disclosed.

Disclosed herein is a rhodium(III)-catalyzed direct heteroarylation reaction between unactivated aliphatic C(sp³)-H bonds in 2-alkylpyridines and heteroaryl organoboron reagents. This catalytic protocol is compatible with various heterocyclic boronates containing ortho- and meta-pyridine, pyrazoles, furan, and quinoline with strong coordination capability. The achievement of this methodology provides an efficient route to build new C(sp³)-heteroaryl bonds.

Pioneering the synthesis of 4-aryl-5-carboxy[2.2]paracyclophanes through C(sp²)–H activation, we constructed distinct small organic molecules possessing circularly polarized luminescence (CPL) with high quantum yields of up to 0.42.

A catalytic protocol for the Rh^III-promoted N-heteroarylation of 2-pyridones with N-heterocyclic boronates containing pyridines, pyrazoles, pyrimidine, quinoline, thiophene and furan has been disclosedviaa removable pyridine auxiliary.

It is necessary to find more simple methods to improve the detection selectivity and sensitivity of antibiotics. Herein, we constructed a novel three-dimensional (3D) Cd-MOF LCU-117 assembled from p-terphenyl-4,2″,5″,4'-tetracarboxylic acid, which showed a special 3D helical structure with carboxylic acid ligands and nitrogen-containing ligands crossing each other vertically. Luminescence measurements indicated that LCU-117 has high selectivity and sensitivity toward Eu³⁺ through the ratiometric effect. Meanwhile, this complex itself could detect antibiotics oxytetracycline (OTC) through the turn-off mechanism. When Eu³⁺ was added in suspensions of LCU-117 (noted as Eu³⁺@LCU-117), the detection toward OTC was enhanced significantly and visually. The sensing mechanism was investigated in detail by various measurements and theoretical calculations. LCU-117 has a good effect on the logic gate, potential fingerprint detection, and mixed-matrix membranes (MMMs). The practical application for monitoring OTC in water samples also provided a satisfactory result.

The tail of imidazole regulated the assembly of fascinating 2Dsqltopology and 3D 2-fold interpenetratedlvtstructure polyoxotungstate-based open frameworks with efficient visible-white-light-driven aerobic catalytic oxidation of sulfides.

A carboxylate-assisted iridium(III)-catalyzed regioselective C(sp²)-H heteroarylation/esterification reaction of acrylic acid is disclosed herein for the first time. This catalytic protocol tolerates various α-substituted, β-substituted, and α, β-disubstituted acrylic acids as well as heteroaromatic boronates well. The resulting 3,4-dihydro-2H-pyran-6-carboxylic acid derivative 3r highlighted the AIE-active luminophore with multiple emission signal properties and a high quantum yield of 28%, exhibiting the potential application of this methodology for the synthesis of nitrogen-containing organic functional materials.