Effect of the metal ion and the medium on the electronic structure of anthranilic acid: a modelling study on the Li and the BeH derivatives

Holographic recording characteristics and physical mechanism of zinc methacrylate/nitroaniline‐co‐doped poly(methyl methacrylate)/9,10‐phenanthrenequinone photopolymers

“…The photopolymers doped with Zn(MA) 2 all exhibited greater birefringence than did the other photopolymers. Among them, the PMMA/PQ/DMNA/Zn(MA) 2 photopolymer provided the greatest improvement in birefringence, presumably because the presence of Zn(MA) 2 react with the PQ and DMNA molecules to form new compounds [25–30], thereby increasing the dipole moments of the Zn(MA) 2 ‐doped photopolymers. With a higher dipole moment led to higher birefringence by the exposed samples and increased the holographic recording characteristics.…”

“…1.2%). Though, Zn(MA) 2 react with DMNA to form the compounds can increased birefringence of sample [25–27]. But the Zn(MA) 2 molecule is not a photosensitive dye, that holographic gratings cannot be recorded in PMMA/DMNA/Zn(MA) 2 sample.…”

“…We attribute the peaks at m / z 357–361 to a molecule comprising one ZnMA unit and one PQ unit. The peaks in the molecular weight range m / z 267–286; however, might be due to the fragmentation of one ZnMA molecule attached to a NO 2 functional group [25–27], which presumably detached from DMNA [25–26, 34]. It means that ZnMA interaction with DMNA.…”

“…In addition, the metal ion (Li + , Na + , Cu 2+ , Zn 2+ ) was interacted with the nitroaniline to form other compounds and the dipole moment of compounds can be increased [25–27]. The compounds with a higher dipole moment led to higher birefringence by the exposed samples and increased the holographic recording characteristics.…”