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

被引：0
|
作者：
Cao, Xue [1 ]
Shi, Xuemei [1 ]
Tang, Piao [2 ]
Wen, Xin [1 ,3 ]
Chen, Jindong [1 ]
Peng, Guang [1 ]
Ye, Ning [1 ]
机构：
[1] Tianjin Univ Technol, Inst Funct Crystal, State Key Lab Crystal Mat, Tianjin 300384, Peoples R China
[2] Fujian Normal Univ, Coll Chem & Mat Sci, Fuzhou 350117, Peoples R China
[3] Shandong Univ, Inst Crystal Mat, State Key Lab Crystal Mat, Jinan 250100, Peoples R China
来源：
INORGANIC CHEMISTRY | 2025年 / 64卷 / 10期
基金：
国家重点研发计划; 中国国家自然科学基金;
关键词：
RAMAN;
D O I：
10.1021/acs.inorgchem.5c00476
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Herein, a series of unprecedented alkaline earth metal methylsulfonate halides, M(SO3CH3)X<middle dot>nH2O (M = Sr, Ba; X = Cl, Br, I; n = 2, 4), and Ba2(SO3CH3)3I<middle dot>4H2O were synthesized. They all feature two-dimensional (2D) layered structures with halogen elements inserted between the 2D layers constructed by metal ions and [SO3CH3] 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. We found that the nonpolar halogens exhibited different enhancement in the two directions. The result may guide regulating the birefringence properties of such 2D crystal materials. Besides, the ultraviolet (UV) cutoff edge of Sr(SO3CH3)Cl<middle dot>4H2O and Ba(SO3CH3)Cl<middle dot>4H2O can reach 183 and 184 nm, respectively, indicating their potential application in the deep-UV region.
引用
收藏
页码：4791 / 4796
页数：6
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