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231223s2010 xx |||||o 00| ||eng c |
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|a 10.1021/la903641k
|2 doi
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|a eng
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| 100 |
1 |
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|a Xiao, Junwu
|e verfasserin
|4 aut
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|a Biomimetic mineralization of CaCO3 on a phospholipid monolayer
|b from an amorphous calcium carbonate precursor to calcite via vaterite
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|c 2010
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Completed 21.06.2010
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|a Date Revised 21.11.2013
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|a published: Print
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|a Citation Status MEDLINE
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|a A phospholipid monolayer, approximately half the bilayer structure of a biological membrane, can be regarded as an ideal model for investigating biomineralization on biological membranes. In this work on the biomimetic mineralization of CaCO(3) under a phospholipid monolayer, we show the initial heterogeneous nucleation of amorphous calcium carbonate precursor (ACC) nanoparticles at the air-water interface, their subsequent transformation into the metastable vaterite phase instead of the most thermodynamically stable calcite phase, and the ultimate phase transformation to calcite. Furthermore, the spontaneity of the transformation from vaterite to calcite was found to be closely related to the surface tension; high surface pressure could inhibit the process, highlighting the determinant of surface energy. To understand better the mechanisms for ACC formation and the transformation from ACC to vaterite and to calcite, in situ Brewster angle microscopy (BAM), ex situ scanning electron microscopy, transmission electron microscopy, Raman spectroscopy, and X-ray diffraction analysis were employed. This work has clarified the crystallization process of calcium carbonate under phospholipid monolayers and therefore may further our understanding of the biomineralization processes induced by cellular membranes
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Phospholipids
|2 NLM
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|a Calcium Carbonate
|2 NLM
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|a H0G9379FGK
|2 NLM
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|a Wang, Zhining
|e verfasserin
|4 aut
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|a Tang, Yecang
|e verfasserin
|4 aut
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| 700 |
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|a Yang, Shihe
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 26(2010), 7 vom: 06. Apr., Seite 4977-83
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|x 1520-5827
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|g volume:26
|g year:2010
|g number:7
|g day:06
|g month:04
|g pages:4977-83
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|u http://dx.doi.org/10.1021/la903641k
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