UM
Reversible control of the orientation of iodine molecules inside the AlPO 4-11 crystals
Hu J.; Wang D.; Guo W.; Du S.; Tang Z.K.
2012-02-23
Source PublicationJournal of Physical Chemistry C
ISSN19327447 19327455
Volume116Issue:7Pages:4423-4430
AbstractWe demonstrate a technique of reversible controlling the orientation of iodine molecules embedded in elliptical nanochannels of an AlPO -11 (AEL) crystal. We find that the interactions between iodine and water molecules can significantly affect the iodine molecular orientation inside the nanochannels. In well-hydrated AEL crystals, all the iodine molecules are standing along major axes of the elliptical cross sections of the channels. As decreasing the density of water molecules in the channels, the iodine molecules rotate to lie along the channels. The experimental results obtained from polarized Raman spectroscopy agree well with the results of molecular dynamics simulations. As a result, we can tune the pressure and temperature, which effectively modifies the water molecule density inside the channels, to set the spatial orientation of the iodine molecules over entire crystal. At last, we demonstrate a reversible local operation using a focused laser spot. This technique may be used for engineering molecular orientation in nanostructured devices. © 2012 American Chemical Society.
DOI10.1021/jp210451q
URLView the original
Language英語
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Cited Times [WOS]:16   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
AffiliationHong Kong University of Science and Technology
Recommended Citation
GB/T 7714
Hu J.,Wang D.,Guo W.,et al. Reversible control of the orientation of iodine molecules inside the AlPO 4-11 crystals[J]. Journal of Physical Chemistry C,2012,116(7):4423-4430.
APA Hu J.,Wang D.,Guo W.,Du S.,&Tang Z.K..(2012).Reversible control of the orientation of iodine molecules inside the AlPO 4-11 crystals.Journal of Physical Chemistry C,116(7),4423-4430.
MLA Hu J.,et al."Reversible control of the orientation of iodine molecules inside the AlPO 4-11 crystals".Journal of Physical Chemistry C 116.7(2012):4423-4430.
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