High response photochromic films based on D–A diarylethenes and their application in holography

Abstract

Photochromic diarylethenes with D–A structure are good candidates in holography thanks to their very large modulation of the complex refractive index.

Improvements in VPHGs for astronomy based on photopolymers

“…Chalcogenide glasses 28 are interesting, but the application in large size element is not easy. Photochromic materials have been studied quite a long and decent ∆n were reported [29][30][31] . On the other hand, there is not any chemical amplification, they cannot be used in the visible and they are reversible; therefore, the application is almost impossible for making VPGHs.…”

Unsymmetrical benzothiazole-based dithienylethene photoswitches

“…Instead, the Raman spectra of the closed form are dominated by strong and distinctive Raman transitions assigned to the skeletal motion of the CC bonds coupled with the delocalized and highly polarizable p-electrons. 67,70 Since the photochromic compounds become fully p-conjugated while passing from the O to the C form, 71,72 their change in the Raman spectra (Fig. 11(A) vs.…”

Photo-modulated wide-spectrum chromism in Eu3+ and Eu3+/Tb3+ photochromic coordination polymer gels: application in decoding secret information

“…S5 †). 64,65 The quantum efficiency for the conversion of TPY-DTE-GO to TPY-DTE-GC and vice versa was calculated to be 60% and 46%, respectively (Fig. S10 †).…”