Chemistry Letters, Vol.30, No.10, 990-991, 2001
A novel photochromic amorphous molecular material based on bisthienylethene with a Spiro-linker
A novel photochromic amorphous molecule (Spiro-BTE) based on bisthienylethene with a spirobifluorene linker has been synthesized. The relative high photochromic quantum yields were obtained for the Spiro-BTE and the switching stability was observed for more than 200 photochromic cycles. The introduction of the spiro, center for photochromic molecules provides a new guideline for the exploring new amorphous photochromic materials with high T-g, good photostability.