(C₃N₃O₃)³⁻ is first proposed to be an excellent birefringent active group and the representative compounds Ba₂M(C₃N₃O₃)₂ (M = Mg Ca) are studied in detail.

Design and exploratory synthesis of a novel infrared (IR) nonlinear optical (NLO) crystal with excellent overall performance are crucial for the development laser industry. Chalcophosphates wide IR transparent ranges rich structural diversity provide broad stage material designers' unconstrained imagination. Moreover, plenty chalcophosphates can intrinsically satisfy many criteria promising NLO crystal, such as large effect, band gap, low melting point, which makes them treasure house...

Trigonal-planar units with high physicochemical stability and large polarizability anisotropy are one kind of promising fundamental building block (FBB) for constructing novel nonlinear optical (NLO) materials. Though great achievements have been made in the ultraviolet/deep ultraviolet (UV/DUV) region trigonal-planar units, little attention has paid to them infrared owing lack enough representatives. In this work, [AgSe3] [HgSe3] rationally proposed as NLO-active FBBs. addition, Ag6HgMSe6...

The quaternary chalcogenides SrCdGeS4 and SrCdGeSe4 were prepared by high-temperature reactions in the form of single crystals (at 1223 1123 K, respectively) or microcrystalline samples 1023 K). They adopt non-centrosymmetric structures (orthorhombic, space group Ama2, Z = 4; a 10.3352(14) Å, b 10.2335(14) c 6.4408(9) Å for SrCdGeS4; 10.8245(8) 10.6912(8) 6.6792(5) SrCdGeSe4) consisting anionic [CdGeCh4]2– layers separated Sr2+ cations. Although structure is closely related to...

The thiophosphate Zn3P2S8 is reported for its potential application in infrared (IR) nonlinear optics. This nondeliquescent compound features a cubic closet packing of the (PS4)3- groups, with Zn2+ filling three-quarters tetrahedral interspaces. optical band gap characterized as 3.12 eV, which very beneficial to improving laser damage threshold. Besides, demonstrates good phase matchability (PM) strong second-harmonic-generation (SHG) response that about 2.6 times AgGaS2, achieving valuable...

Four Hg-based IR nonlinear-optical materials, AHgSnQ4 (A = Sr, Ba; Q S, Se), were discovered and investigated systematically. Their structures are built of two-dimensional [HgSnQ4]2- layers, which assembled alternately by distorted (HgQ4 SnQ4) tetrahedra separated eight-coordinated A2+ cations. The two sulfides AHgSnS4 Ba, Sr) exhibit large second-harmonic-generation (SHG) responses (2.8 1.9 × AgGaS2 at 2.09 μm), as well band gaps (2.77 2.72 eV). selenides AHgSnSe4 show even stronger SHG...

Highly polarizable mixed-anion structural building units (SBUs) have been demonstrated as promising candidates for high-performing optical crystals. In this work, two new SBUs of [GeOSe3] and [GeO3S] are first designed through partial isovalent substitution chalcogen atoms by O in the classical [GeQ4] (Q = S, Se) tetrahedra. On basis these SBUs, quaternary oxychalcogenides, Sr3Ge2O4Se3 SrGe2O3S2, successfully synthesized. crystallizes noncentrosymmetric space group R3m possesses unique...

The use of biocompatible ionic liquids (bio-ILs) as a "green" solvent with uniquely tunable cations and anions, specific selectivity, many other desirable physicochemical properties in biocatalysis has shown great promises to address challenges. A plethora studies have demonstrated ILs possess range exceptional capabilities coordinating such stabilizing enzyme structure, enhancing enzyme-substrate interaction, increasing substrate solubility product separation/removal, improving...

Currently, the microwave absorption materials with high absorbing efficiency are in urgent need to reduce electromagnetic pollution. Herein, ZnFe2O4@SiO2 core–shell microspheres were synthesized and combined reduced graphene oxide (RGO) form ingenious hierarchical composites (ZnFe2O4@SiO2@RGO), which used as wave functional nanofillers of semicrystalline polyvinylidene fluoride (PVDF) matrix. The microstructure crystallization behavior ZnFe2O4@SiO2@RGO/PVDF composite membranes systematically...

A new infrared nonlinear optical material with diamond-like structures, Li4HgSn2Se7, was synthesized by the traditional high-temperature solid-state method. It crystallizes in non-centrosymmetric group Cc all LiSe4, HgSe4, and SnSe4 tetrahedra aligned an additive manner. This exhibits large second harmonic generation (SHG) about 3.6 times that of benchmark AgGaS2 phase-matching behavior. Detailed structural analysis calculations reveal (HgSe4) (SnSe4) are main contributors for its strong...

New infrared nonlinear optical material CuCd₃PS₆is activated by its three-in-one tetrahedra-stacking architecture.

We demonstrate for the first time generation of octave-spanning mid-infrared using a BGSe nonlinear crystal. A Cr:ZnS laser system delivering 28-fs pulses at central wavelength 2.4 µm is used as pump source, which drives intra-pulse difference frequency inside As result, coherent broadband continuum spanning from 6 to 18 has been obtained. It shows that crystal promising material broadband, few-cycle via down conversion with femtosecond sources.

The interplay between NLO-active structural units and transition metals has led to the discovery of a new layered multifunctional chalcogenide, K₂MnGe₃S₈.

We firstly demonstrated a tunable 2.1 µm pumped mid-infrared type-II phase-matching BaGa4Se7 (BGSe) optical parametric oscillator (OPO). A signal tuning range of 3.82-3.99 was achieved. With light produced by the BGSe OPO serving as seed, ZnGeP2 (ZGP) amplifier (OPA) first introduced. 4.35 W laser obtained in novel with ZGP OPA system, which 24 1 kHz Q-switched Ho:YAG laser. The beam quality factor M2 whole system is ∼2.3, over 50% promotion on previous results single OPO.

The first developed ionozyme that combines a discovered novel FDHPa with synergistic ionic microenvironment enables efficient bioactivation of CO 2 .

Capsaicin (CAP) exerts significant anti-tumor effects on a variety of tumors, with low intrinsic toxicity.Cisplatin (DDP) is currently the first-line drug for treatment oral cancer; however, its clinical efficacy impeded by chemoresistance and negligible side effects.Whether combined use CAP DDP has synergistic antitumor effect tongue squamous cell carcinoma (TSCC) cells underlying mechanisms remains unclear.The present study revealed that reduced activity TSCC in dose-and time-dependent...

The newly developed IR nonlinear optical (NLO) material BaGa4Se7(BGSe) has aroused intense research interest owing to its excellent overall properties and outstanding laser output performance. In this paper, the growth of high-quality large-size BGSe was investigated. To overcome difficulty realizing large-scale complete reaction among highly active metal Ba, liquid Ga, nonmetal with high vapor pressure Se, a two temperature-zone synthetic technique developed, over 300 g polycrystalline raw...