Two UV organic-inorganic hybrid antimony-based materials with superior optical performance derived from cation-anion synergetic interactions  

作　　者：Pu Zhang Xiang Mao Xuehua Dong Ling Huang Liling Cao Daojiang Gao Guohong Zou 

机构地区：[1]College of Chemistry and Materials Science,Sichuan Normal University,Chengdu 610066,China [2]College of Chemistry,Sichuan University,Chengdu 610065,China

出　　处：《Chinese Chemical Letters》2024年第9期442-446,共5页中国化学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.22122106,22071158,21971171,22305166);the Fundamental Research Funds from Sichuan University(No.2021SCUNL101);the Natural Science Foundation of Sichuan Province(No.2023NSFC1066)。

摘　　要：Finding suitable strategies to effectively enhance the optical properties of materials are the goal being pursued by researchers.Herein,cation-anion synergetic interactions strategy was proposed to develop two novel organic-inorganic hybrid antimony-based optical materials,(C_(3)H_(5)N_(2))Sb F_(2)SO_(4)(I)and(C_(5)H_(6)N)Sb F_(2)SO_(4)(Ⅱ),which were obtained by introducing Sb^(3+)cation containing stereochemically active lone-pair(SCALP)and organicπ-conjugated cations into sulphate system.The synergistic interactions of the organicπ-conjugated cations,the inorganic[SbO_(2)F_(2)]^(3-)seesaw anions and the[SO_(4)]^(2-)distorted tetrahedra anions make their ultraviolet(UV)absorption edges approach 297 and 283 nm,respectively,and raise their birefringence up to 0.193@546 nm and 0.179@546 nm,respectively.Interestingly,although the two compounds have the same stoichiometric ratio and similar one-dimensional(1D)chain structure,they show opposite macroscopic symmetry,where the NCS compound(Ⅱ)exhibits a large secondharmonic generation(SHG)response(1.6 times that of KH_(2)PO_(4)).The two reported compounds are found to be promising UV optical materials in the experimental tests.

关 键 词：Antimony-based crystals Cation-anion synergetic interactions Large birefringence Short UV absorption edge Organic-inorganic hybrid Ionothermal synthesis 

分 类 号：TB34[一般工业技术—材料科学与工程]