Sodalites showing white-to-yellow photochromism have been developed by partial substitution of sodium with calcium. The yellow colour is sensitive to fading under blue light, making these low-cost materials highly suitable for light detection.

Photochromism of monothiodibenzoylmethane has been studied in a number of environments at different temperatures. Direct laser irradiation of a sample located in the NMR magnet allowed in situ monitoring of the phototransformation products, determining their structure, and measuring the kinetics of the back reaction. These observations, along with the data obtained using electronic and vibratio...

The influence of the chemical composition and silylation of mesoporous MCM-41 materials on the photochromic behaviour of adsorbed spiropyran (BIPS) and 6-nitrospiropyran was studied. Upon incorporation, the spiropyrans underwent ring opening to form either zwitterionic merocyanine or its corresponding O-protonated form. In all silica MCM-41 or in the MCM-41 containing aluminium, the O-protonate...

In contrast to common angular naphthopyrans that exhibit photochromism and mechanochromism, isomeric linear are typically not photochromic. A polarizing dialkylamine substituent enables photochromic mechanochromic behavior in polymers containing a novel naphthopyran motif.

In this work, we study the absorption properties of AlN in range 1.5–5.5 eV, as well metastable change induced by ultraviolet (UV) irradiation (photochromism). We also restoration initial state under action 2–4 eV or elevated temperatures. UV results a decrease coefficient from 110 to 55 cm−1 at 4.7 while visible range, increases values below 5 ∼35 cm−1. Measurements with two linear polarizatio...

Two novel aggregation-induced emission (AIE) active Schiff bases ( P4C12 and P5C12 ) harnessing excited-state intramolecular proton transfer (ESIPT) process derived from tetraphenylethylene 4-(dodecyloxy)-2-hydroxybenzaldehyde were reported. exhibits photochromism in original powder crystalline states . In contrast, powder, but totally different photochromic fluorescence properties its two poly...