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Deep-ultraviolet nonlinear optical (deep-UV NLO) crystals are of worldwide interest for the generation of coherent light with wavelength below 200 nm by the direct second-harmonic generation (SHG) output from solid-state lasers. The unprecedented deep-UV NLO phosphates representing their own structure types, Ba3P3O10Cl (BPOC), Ba3P3O10Br (BPOB), have been discovered, which display moderate powder SHG intensities in type I phase matchable behaviors with a short UV cutoff edge of 180 nm (measured by a single crystal, one of the shortest values among phosphates to date). Insightfully, the geometry and polarization of the C1-P3O10(5-) building unit are affected by the crystal packing. DFT calculations and cutoff energy dependent SHG coefficient analyses reveal that the SHG origin is from the cooperation of asymmetric C1-P3O10(5-) anion, Ba(2+) cation, and Cl(-)/Br(-) anion.

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Metal‐halide perovskites are recently emerging as the promising alternative for CPL detection owing to their CPL‐sensitive property induced by chiral organics and efficient charge transport of inorganic frameworks. However, most of these reported chiral perovskites involve high concentrations of toxic Pb which will become the potential bottleneck for their further application. Herein, we successfully developed two lead‐free halide double perovskites, [(R)‐β‐MPA]4AgBiI8 ((R)‐β‐MPA=(R)‐(+)‐β‐methylphenethylammonium, 1‐R), and [(S)‐β‐MPA]4AgBiI8 ((S)‐β‐MPA=(S)‐(−)‐β‐methylphenethylammonium, 1‐S). Circular dichroism measurements reveal that these perovskites exhibit notable chirality induced by organic cations to distinguish different polarization states of CPL photons. Significantly, they present unique chiral polar photovoltaic, and resulting self‐powered CPL detection without an external power source is unprecedentedly achieved. Furthermore, an anisotropy factor up to 0.3 is acquired for the self‐powered CPL detection, reaching the highest value among reported chiral perovskites. This work suggests hybrid double perovskites are promising photoelectronic candidates, and provides a new approach for exploring new “green” circularly polarized light‐sensitive materials with high performance.

Graphene prepared with p-phenylene diamine as reducing reagent was stably dispersed in ethanol, and its film, prepared by electrophoretic deposition on ITO, exhibited high conductivity.

Novel SHG effective inorganic open-framework chalcohalides, Ba(3)AGa(5)Se(10)Cl(2) (A = Cs, Rb and K), have been synthesized by high temperature solid state reactions. These compounds crystallize in the tetragonal space group I ̅4 (No.82) with a = b = 8.7348(6) - 8.6341(7) Å, c = 15.697(3) - 15.644(2) Å, V = 1197.6(3) - 1166.2(2) Å(3) on going from Cs to K. The polar framework of (3)(∞)[Ga(5)Se(10)](5-) is constructed by nonpolar GaSe(4)(5- )tetrahedron (T1) and polar supertetrahedral cluster Ga(4)Se(10)(8-) (T2) in a zinc-blende topological structure with Ba/A cations and Cl anions residing in the tunnels. Remarkably, Ba(3)CsGa(5)Se(10)Cl(2) exhibits the strongest intensity at 2.05 μm (about 100 times that of the benchmark AgGaS(2) in the particle size of 30-46 μm) among chalcogenides, halides, and chalcohalides. Furthermore, these compounds are also the first open-framework compounds with red photoluminescent emissions. The Vienna ab initio theoretical studies analyze electronic structures and linear and nonlinear optical properties.

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Traditional aqueous self-assembly of tubular structures (as well as other aggregates) usually relies on the hydrophobic effect, a relatively weak and nondirectional interaction. The resultant aggregates are inherently soft, fluid, and less-ordered. Alternatively, we report a novel kind of nonamphiphilic selfassembly of microtubes in aqueous solutions of cyclodextrin/ionic surfactant (CD/IS) complexes. This self-assembly is driven exclusively by H-bonds, relatively strong, directional interactions. The CD/IS microtubes feature an unbundling nature, ultralong persistence lengths, highly monodispersed diameters, and remarkable rigidity. Every single CD/IS microtube is constituted by a set of coaxial, equally spaced, hollow cylinders, resembling the annular rings of trees (thus termed as ''annular ring'' microtubes). Furthermore, bearing in mind the fundamental difference between the amphiphilic counterpart in driving forces, this H-bond-driven hydrophilic self-assembly is envisioned to complement its counterpart and expand the field of molecular self-assembly.