Free-standing mesoporous silica films with tunable chiral nematic structures

Nature

Volumn 468, Issue 7322, 2010, Pages 422-426

  Shopsowitz, Kevin E ^a   Qi, Hao ^a   Hamad, Wadood Y ^b   MacLachlan, Mark J ^a  

^a UNIVERSITY OF BRITISH COLUMBIA   (Canada)

^b FPINNOVATIONS   (Canada)

Author keywords

[No Author keywords available]

Indexed keywords

CELLULOSE; CHOLESTEROL DERIVATIVE; NANOCRYSTAL; SILICON DIOXIDE;

FILM; MITOCHONDRIAL DNA; MOLECULAR ANALYSIS; POLYSACCHARIDE; PROTEIN; SILICA; SURFACTANT;

ARTICLE; CHEMICAL STRUCTURE; CHIRALITY; FILM; LIQUID CRYSTAL; MATERIALS TESTING; POROSITY; PRIORITY JOURNAL; STRUCTURE ANALYSIS; SYNTHESIS;

ABSORPTION; CELLULOSE; CHOLESTEROL; HYDROGEN-ION CONCENTRATION; LIQUID CRYSTALS; MICROSCOPY, ELECTRON, SCANNING; MICROSCOPY, ELECTRON, TRANSMISSION; NANOPARTICLES; NITROGEN; POROSITY; SILICON DIOXIDE; STEREOISOMERISM; WATER;

EID: 78549265827     PISSN: 00280836     EISSN: 14764687     Source Type: Journal    
DOI: 10.1038/nature09540     Document Type: Article

References (28)

1. Johnson, L. N. Asymmetry at the molecular level in biology. Eur. Rev. 13, 77-95 (2005).
2. Gabashvili, A., Medina, D. D., Gedanken, A. & Mastai, Y. Templating mesoporous silica with chiral block copolymers and its application for enantioselective separation. J. Phys. Chem. B 111, 11105-11110 (2007).
3. Johnson, B. F. G. et al. Superior performance of a chiral catalyst confined within mesoporous silica. Chem. Commun. 1167-1168 (1999).
4. Fireman-Shoresh, S., Popov, I., Avnir, D. & Marx, S. Enantioselective, Chirally templated sol-gel thin films. J. Am. Chem. Soc. 127, 2650-2655 (2005).
5. Hodgkinson, I. & Wu, Q. H. Inorganic chiral optical materials. Adv. Mater. 13, 889-897 (2001).
6. Kresge, C. T., Leonowicz, M. E., Roth, W. J., Vartuli, J. C. & Beck, J. S. Ordered mesoporous molecular sieves synthesized by a liquid-crystal template mechanism. Nature 359, 710-712 (1992).
7. Yang, P., Zhao, D., Margolese, D. I., Chmelka, B. F. & Stucky, G. D. Generalized syntheses of large-pore meosporous metal oxides with semicrystalline frameworks. Nature 396, 152-155 (1998).
8. Yang, H., Coombs, N., Sokolov, I. & Ozin, G. A. Free-standing and oriented mesoporous silica films grown at the air-water interface. Nature 381, 589-592 (1996).
9. Armatas, G. S. & Kanatzidis, M. G. Hexagonal mesoporous germanium. Science 313, 817-820 (2006).
10. Inagaki, S., Guan, S., Ohsuna, T. & Terasaki, O. Anorderedmesoporous organosilica hybrid material with a crystal-like wall structure. Nature 416, 304-307 (2002).
11. Sun, D. et al. Hexagonal nanoporous germanium through surfactant-driven self-assembly of Zintl clusters. Nature 441, 1126-1130 (2006).
12. Attard, G. S., Glyde, J. C. & Göltner, C. G. Liquid-crystalline phases as templates for the synthesis of mesoporous silica. Nature 378, 366-368 (1995).
13. Che, S. et al. Synthesis and characterization of chiral mesoporous silica. Nature 429, 281-284 (2004).
14. Qiu, H., Inoue, Y. & Che, S. Supramolecular chiral transcription and recognition by mesoporoussili caprepared by chiralimpr in tingofahelical micelle. Angew.Chem. Int. Ed. 48, 3069-3072 (2009).
15. Broer, D. J., Lub, J. & Mol, G. N. Wide-band reflective polarizers from cholesteric polymer networks with a pitch gradient. Nature 378, 467-469 (1995).
16. Yang, D.-K., West, J. L., Chien, L.-C. & Doane, J. W. Control of reflectivity and bistability in displays using cholesteric liquid crystals. J. Appl. Phys. 76, 1331-1333 (1994).
17. Kopp, V.I., Fan, B., Vithana, H.K. M.& Genack, A. Z.Low-threshold lasingat the edge of a photonic stop band in cholesteric liquid crystals. Opt. Lett. 23, 1707-1709 (1998).
18. Akagi, K. et al. Helical polyacetylene synthesized with a chiral nematic reaction field. Science 282, 1683-1686 (1998).
19. Sharma, V., Cme, M., Park, J. O. & Srinivasarao, M. Structural origin of circularly polarized iridescence in jeweled beetles. Science 325, 449-451 (2009).
20. Mukherjee, S. M. & Woods, H. J. X-ray and electron microscope studies of the degradation of cellulose by sulphuric acid. Biochim. Biophys. Acta 10, 499-511 (1953).
21. Revol, J.-F., Bradford, H., Giasson, J., Marchessault, R.H. & Gray, D.G. Helicoidal self-ordering of cellulose microfibrils in aqueous suspension. Int. J. Biol. Macromol. 14, 170-172 (1992).
22. Revol, J.-F., Godbout, L. & Gray, D. G. Solid self-assembled films of cellulose with chiral nematic order and optically variable properties.J.Pulp Pap. Sci. 24, 146-149 (1998).
23. Dujardin, E., Blaseby, M. & Mann, S. Synthesis of mesoporous silica by sol-gel mineralisation of cellulose nanorod nematic suspensions. J. Mater. Chem. 13, 696-699 (2003).
24. Thomas, A. & Antonietti, M. Silica nanocasting of simple cellulose derivatives: towards chiral pore systems with long-range order and chiral optical coatings. Adv. Funct. Mater. 13, 763-766 (2003).
25. Edgar, C. D. & Gray, D. G. Induced circular dichroism of chiral nematic cellulose films. Cellulose 8, 5-12 (2001).
26. DeVries, H.L.Rotatory power and other optical properties ofcertain liquid crystals. Acta Crystallogr. 4, 219-226 (1951).
27. Dong, X. M., Kimura, T., Revol, J.-F. & Gray, D. G. Effects of ionic strength on the isotropic-chiral nematic phase transition of suspensions of cellulose crystallites. Langmuir 12, 2076-2082 (1996).
28. Robbie, K., Broer, D.J. & Brett, M. J. Chiral nematic order inliquid crystals imposed by an engineered inorganic nanostructure. Nature 399, 764-766 (1999).