The synthesis, characterization and third-order nonlinear optical character of poly(2,5-dipropargyloxybenzoate) containing a polar aromatic diacetylene
作者:Sandra L. Castañon、Miriam F. Beristain、Alejandra Ortega、Gustavo Gómez-Sosa、Eduardo Muñoz、Ana Laura Perez-Martínez、Takeshi Ogawa、M. Faisal Halim、Francis Smith、Ardie Walser、Roger Dorsinville
DOI:10.1016/j.dyepig.2010.05.012
日期:2011.2
The glass transition temperature of the novel compound, poly(2,5-dipropargyloxybenzoate) containing a polar aromatic diacetylene was 105 °C and differential scanning calorimetry showed two exothermic peaks due to the opening of the hexa-2,4-diynylene-1,6-dioxy group and the aromatic diacetylene group. Two types of free radical were detected in the electron spin resonance spectra of the heated polymer
新化合物的玻璃化转变温度,聚(2,5含有极性芳族二乙炔-dipropargyloxybenzoate)是105℃和差示扫描量表现出两个放热峰是由于己-2,4- diynylene-1的开口, 6-二氧基和芳族二乙炔基。在加热的聚合物的电子自旋共振谱中检测到两种类型的自由基,一种是通过主链六-2,4-二亚炔基-1,6-二氧基的交联形成的,另一种是由芳香族发色团二乙炔形成的。使用Z扫描技术测定的聚合物薄膜的三阶非线性光学磁化率χ (3)为-4.5±1×10 -10 易。当薄膜在140°C的紫外线下照射时,由于强烈的交联,它们会形成微裂纹。