Toward Rhenium-based Circularly Polarized OLEDs Using Tailored Chiral Re(CO)3 Emitters.

Chiral rhenium(I) emitters showing circularly polarized phosphorescence (CPP) are an attractive mainstay for CP organic light-emitting diodes (CP-OLEDs). However, the efficiency of such  emitters is not ideal, and they have never been explored for circularly polarized electroluminescence (CPEL) applications. Here, we have tailored robust chiral Re(I) complexes with improved CPP properties, and firstly  demonstrated CPEL from rhenium emitters.

Use of macromolecules lignosulfonate and graphene oxide to prepare non-autoclaved aerated concrete.

The development of new structural materials with thermal insulation properties is urgently need in the construction of smart buildings. Besides, there is a need to develop environmentally friendly and sustainable concrete mix designs. Lignosulfonate (LS) macromolecule and graphene oxide (GO) were used to prepare non-autoclaved aerated concrete (NAC).

Observation of Haldane magnetism in organically templated vanadium phosphate (H)VPOOH.

We prepared an organically templated magnet, (H)VPOOH (H = diprotonated ethylenediamine), hydrothermally and characterized its crystal structure by powder X-ray diffraction and Fourier-transform infrared spectroscopy, and its physical properties by magnetization, specific heat and nuclear magnetic resonance measurements and density functional theory calculations. (H)VPOOH consists of uniform chains of V (d, = 1) ions and exhibits Haldane magnetism with spin gap = 59.3 K from the magnetic susceptibility () at = 0.

Palladium-Catalyzed C(sp)-H Activation in A Monoterpene-Based Compound Under Mild Conditions: A Combined Experimental and Theoretical Mechanistic Study.

A rare example of the palladium-catalyzed sp C-H bond activation in a monoterpene-based compound has been observed in the reaction of PdCl with a (+)-3-carene-based ligand HL (HL=N-((1aS,3S,7bR)-1,1,3-trimethyl-7-phenyl-5-(pyridin-2-yl)-1a,2,3,7b-tetrahydro-1H-cyclopropa[f]quinolin-3-yl)acetamide), which yielded the [PdLCl] complex. In contrast to the vast majority of C(sp)-H activation reactions which require prolonged heating and mixing due to the inert character of the corresponding bond, the reaction reported herein proceeds rapidly under mild conditions. A theoretical insight into the ligand deprotonation has been performed by DFT calculations.