A Single Photochromic Molecular Switch with Four Optical Outputs Probing Four Inputs

• DOI: 10.1002/adma.200305425
• Publication Date: 2004-01-05T16:00:41Z
• Authors: H. Tian; B. Qin; R. Yao; X. Zhao; S. Yang
• Keywords: Cyclopentene; Ultraviolet; Molecular switch; Spiropyran

The fluorescence, including the intensity and emission peaks , enhanced photochromism of a simple photochromic compound, bis(5‐pyridyl‐2‐methylthien‐3‐yl)cyclopentene (Py‐BTE) can be reversibly regulated by alternating ultraviolet/visible light irradiation addition Zn 2+ protons. A new combinational molecular logic switch with four optical outputs responding to inputs (see Figure) is proposed.