Molecular Structure Design, Crystal Growth, and Characterization of New Types of Organic Nonlinear Optical Chalcone Crystals
作者:Kai Xu、Rui Chen、Jinkang Ma、Tianhua Wang、Degao Zhong、Lifeng Cao、Bing Teng、Haitao Wu
DOI:10.1021/acs.cgd.2c00235
日期:2022.7.6
photoluminescence properties of the crystal were characterized, and the hyperpolarizability of the crystal was theoretically calculated. The results show that the synthesized crystals exhibit higher crystal transparency (≥70%), higher melting point, and lower dielectric constant (εr ≈ 6.5) compared with other reported chalcone NLO crystals. In particular, the SHG intensity of the 6MN3MPP crystal is 4.3 times higher
通过结构剪裁获得的查尔酮结构是一类重要的分子有机非线性光学(NLO)晶体,可用于多种用途。在这项工作中,两种具有非中心对称结构的新型查尔酮化合物晶体,6MN3MPP (C 21 H 18 O 3 , Pca 2 1 ) 和 6MN4MPP (C 21 H 18 O 3 , Pn),是通过扩展 π 共轭和结构修饰策略来设计和生长的。在此基础上,表征了晶体的二次谐波产生(SHG)效率、热稳定性、透射光谱、介电常数和光致发光特性,并从理论上计算了晶体的超极化率。结果表明,与其他报道的查尔酮非线性光学晶体相比,合成的晶体具有更高的晶体透明度(≥70%)、更高的熔点和更低的介电常数(ε r ≈ 6.5)。特别是6MN3MPP晶体的SHG强度是KDP晶体的4.3倍。所有结果表明,这两种新合成的化合物作为非线性光学晶体具有良好的应用前景。