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Joel A. Kelly, Marcus Yu, Wadood Y. Hamad and Mark J. MacLachlan Large, Crack-Free Freestanding Films with Chiral Nematic Structures Advanced Optical Materials 1

Article first published online: 27 FEB 2013 | DOI: 10.1002/adom.201300015

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A straightforward and inexpensive method to eliminate cracking in mesoporous thin films with chiral nematic structures is demonstrated to prepare large films of silica and carbon templated by nanocrystalline cellulose (NCC). The addition of polyols such as glucose to a dispersion of NCC and sol–gel precursors eliminates cracking without affecting the resulting optical properties.

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