摘要
合成了一种双查尔酮衍生物4,4′-二[3-(3,4-二甲氧基苯基)-2-丙烯酰基]联苯(BBPAB),经IR、^(1)HNMR、^(13)C NMR、LC-MS等分析测试手段对其结构进行了确证。该化合物热稳定性良好,在可见光范围有高的线性透光率。利用Z扫描测试方法研究了BBPAB在190fs(515-700 nm)时域下的非线性光学吸收,其在飞秒脉冲下具有宽波段的反饱和吸收性质,并拟合得到了三阶非线性吸收系数和五阶非线性吸收系数。量子化学计算结果表明,BBPAB存在较强的分子内电荷转移现象和较大的极化率。
A novel double chalcone derivative, 4,4′-bis[3-(3,4-bimethoxyphenyl)-2-acryloyl]biphenyl(BBPAB) was synthesized, and its structure was confirmed by IR、^(1)H NMR、^(13)C NMR、LC-MS and other analytical methods. The DSC/TG result demonstrates that the BBPAB has good thermal stability. The UV-Vis spectrum shows it has a high linear transmittance in the visible range. It’s nonlinear absorption property is investigated under 190 fs(515-700 nm) by Z-scan measurements. It is found that the BBPAB realizes broadband reverse saturable absorption(RSA) under femtosecond excitation, and the third-order nonlinear absorption coefficient and fifth-order nonlinear absorption coefficient are obtained by fitting. Quantum chemical calculations indicates that the BBPAB molecule has a strong intramolecular charge transfer effect and a large polarization rate.
作者
石玉芳
王迎进
孙金鱼
赵明根
Shi Yufang;Wang Yingjin;Sun Jinyu;Zhao Minggen(Key Laboratory of Materials and Computational Chemistry,Department of Chemistry,Xinzhou Teachers University,Xinzhou,034000)
出处
《化学通报》
CAS
CSCD
北大核心
2021年第10期1086-1091,共6页
Chemistry
基金
山西省“1331工程”优势特色学科《化学》项目(2018122)资助。
关键词
双查尔酮衍生物
非线性光学
反饱和吸收
量子化学计算
Double chalcone derivative
Nonlinear optics
Reverse saturable absorption
Quantum chemical computation
