30757-50-7Relevant articles and documents
NEMATOGENS FOR MATRIX-ADDRESSED TWISTED NEMATIC DISPLAYS - 1.
Osman,Huynh-Ba
, p. 331 - 338 (1983)
Nematogens with small DELTA epsilon / epsilon // PERPEND for matrix-addressed TN-displays were synthesized. The effect of introducing lateral cyano groups on the dielectric constants and the thermodynamic stability of the mesophase of 4-cyanophenyl esters is described. Fluoro-PCH's suitable for matrix addressing were prepared and the effect of the fluoro substituent on the clearing point was studied.
The examination of molecular structure properties of 4,4′-oxydiphthalonitrile compound: combined spectral and computational analysis approaches
Ery?lmaz, Serpil,Akdemir, Nesuhi,?nkaya, Ersin
, p. 28 - 42 (2019/01/10)
The synthesis process, X-ray diffraction analysis of its single crystal form and the structural properties of the 4,4′-oxydiphthalonitrile compound by Fourier transform infrared, nuclear magnetic resonance and ultraviolet-visible spectral methods were rep
Synthesis and characterization of transparent polyimides derived from ester-containing dianhydrides with different electron affinities
Zhou, Yu,Chen, Guofei,Wang, Wei,Wei, Lihong,Zhang, Qiuju,Song, Liping,Fang, Xingzhong
, p. 79207 - 79215 (2015/10/05)
Two series of poly(ester imide)s derived from bis(trimellitic acid anhydride) phenyl ester (TAHQ) and bis[(3,4-dicarboxylic anhydride) phenyl] terephthalate (PAHP), as well as poly(ether imide)s based on hydroquinone diphthalic anhydride (HQDPA), were synthesized with aromatic diamines via solution polycondensation. These polyimide films were transparent with an ultraviolet-visible absorption cut-off wavelength below 375 nm, and with tensile strengths of 42.0-83.8 MPa, tensile moduli of 2.5-4.7 GPa and elongations at break of 2.1-5.4%. Compared with the poly(ether imide)s, the poly(ester imide)s showed higher glass transition temperatures (Tg), lower water absorption (WA) and lower temperature of 5% weight loss (Td5%). Moreover, the poly(ester imide)s derived from PAHP with a low electron affinity of 2.04 eV by theoretical calculation achieved better transparency, lower WA and slightly lower Tg than the corresponding TAHQ-based poly(ester imide)s.