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Mostofa K. Khan, Wadood Y. Hamad and Mark J. MacLachlan Tunable Mesoporous Bilayer Photonic Resins with Chiral Nematic Structures and Actuator Properties Advanced Materials 26

Version of Record online: 20 JAN 2014 | DOI: 10.1002/adma.201304966

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Chiral nematic structures with different helical pitch from layer to layer are embedded into phenol-formaldehyde bilayer resin composite films using cellulose nanocrystals (CNCs) as templates. Selective removal of CNCs results in mesoporous resins with different pore size and helical pitch between the layers. Consequently, these materials exhibit photonic properties by selectively reflecting lights of two different wavelengths and concomitant actuation properties.

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