Self-organized architectures capable of being tuned by external stimuli have proved extremely fascinating for the design and fabrication of functional smart materials. As an example, photoresponsive cholesteric liquid crystals (CLCs) have attracted great attention due to their unique self-organized helical arrangement of mesogen molecules that can response to light. Photoresponsive CLCs can be formulated by doping chiral photochromic molecules into an achiral LC host and the resulting mixture can self-organize into unique optically tunable helical superstructure. In this talk, we will present our recent progress on phototunable CLCs whose reflection color and handedness can be reversibly modulated by light.1Supported by the Air Force Office of Scientific Research (FA9550-09-1-0193)

Light-driven reversible handedness inversion in self-organized helical superstructures<sup>
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246th National Meeting (2013)

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