Abstract
A dithienylethene molecule involving carborane clusters shows remarkable fatigue resistance and high contrast visual colour changes when irradiated with alternating ultraviolet and visible light. The fluorescence of this assembly can be switched on and off when irradiated in the solid state but not in the solution state.
Highlights
A dithienylethene molecule involving carborane clusters shows remarkable fatigue resistance and high contrast visual colour changes when irradiated with alternating ultraviolet and visible light
Single molecule switches due to photochromism are highly desirable as components of molecular electronics especially in recording media applications.[6,7,8,9,10,11]
The colours of the carborane DTE switch 2 are beneficial as applying UV radiation to the white solid resulted in a high contrast colour change from white to purple (Fig. 4)
Summary
A dithienylethene molecule involving carborane clusters shows remarkable fatigue resistance and high contrast visual colour changes when irradiated with alternating ultraviolet and visible light. The alkynyl photoswitch 1 was isolated as a light blue solid as the open form with the coloured closed DTE form present in minor amount.
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