Regulation of Refractive Index by Halogens in Two-Dimensional Layered Methylsulfonate Halides.

Herein, a series of unprecedented alkaline earth metal methylsulfonate halides, M(SOCH)X·HO (M = Sr, Ba; X = Cl, Br, I; = 2, 4), and Ba(SOCH)I·4HO were synthesized. They all feature two-dimensional (2D) layered structures with halogen elements inserted between the 2D layers constructed by metal ions and [SOCH] groups, which are suitable for exploring the influence of halogens on their refractive index. The refractive indexes both parallel and (almost) perpendicular to the 2D layers were calculated through theoretical calculations.

[C2N4H7O][NH2SO3]: High-performance Ultraviolet Nonlinear Optical Crystal with Ditrigon Coupled Guanylurea Group.

The Development of high-performance short-wave ultraviolet (UV) nonlinear optical (NLO) crystals is critical in the field of optoelectronic functional crystals. High-performance NLO functional units are crucial for achieving desired target crystals. In this study, a promising group, guanylurea ([C2N4H7O]+, abbreviated as GU), was investigated using a unit coupling strategy.

Optimization of hormone combinations for root growth and bud germination in Chinese fir (Cunninghamia lanceolata) clone leaf cuttings.

In order to ascertain the optimal hormone combination for Chinese fir (Cunninghamia lanceolata) leaf cuttings, an L(4) orthogonal test of 6-benzylaminopurine (6-BA), 1-naphthaleneacetic acid (NAA), and indole-3-butyric acid (IBA) (0, 10, 30, or 50 mg · L of each exogenous hormone) immersion for 5, 10, 15, or 20 min was conducted. Callus initiation rate and rooting promotion rate were mainly affected by treatment time, root length increase by 6-BA concentration, and bud germination rate and plantlet formation rate by NAA concentration. The expected optimal combination for callus initiation rate was 50 mg · L 6-BA + 0 mg · L NAA + 30 mg · L IBA + 10 min; for rooting promotion rate, it was 0-10 mg · L 6-BA + 10 mg · L NAA + 30 mg · L IBA + 20 min; for bud germination rate, it was 50 mg · L 6-BA + 0-10 mg · L NAA + 0-30 mg · L IBA + 20 min; and for seedling formation rate for No.