Reversible crosslinking density stimulated diffraction wavelength tuning of hydrogel-encapsulated crystalline colloidal arrays |
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| Authors: | Dai Ye Bao Hua Lin Jiaping Rungta Parul Foulger Stephen H |
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| Affiliation: | Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, PR China. |
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| Abstract: | The reversible variation in the observed stop band of a hydrogel-encapsulated crystalline colloidal array was achieved through the selective formation and destruction of -S-Pb-S- linkages within the hydrogel. A reversible 45 nm stop band shift could be achieved with a cyclical treatment of Pb(2+) and then dithiothreitol solution. |
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