[Retracted] Innovative Application of Nano-Organic Photochromic New Materials in Hakka Traditional Decorative Pattern Design

Table 4

Commonly used photochromic materials and their action mechanism.

sort	Photochromic materials	Mechanism of action
inorganic	WO3, MoO3, TiO2, CaTiO3+(Ni, Mo),; (PLZT+Fe2O3), CaF2+(La, Ce), (Tb, Cd), SrTiO3+(Fe, Mo), (Ni, Mo)	WO3+hv ↔ W5+(O-)(O2-)2; Ni2+Mo6+hv ↔ Ni3+Mo5+
	AgX(X=Cl, Br, I)+TlCl, CdO	n(AgCl)+hv ↔ (Ag)n+nCl
	As-Se(S), Ge-Te-X (X=Sb, S)	Photocrystallization blackening
	Ferrocyanide	M4+Fe42+[Fe2+(CN)6]3=Fe43+[Fe2+(CN)6]3+4M+4e-
organic	Spiral pyran, aniline or Schiff base, sulfone, osazone, ammonia Thiourea, astragalus derivatives, succinic anhydride	The breaking and combination of double bonds, the formation of isomers