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231223s2009 xx |||||o 00| ||eng c |
| 024 |
7 |
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|a 10.1021/la804280m
|2 doi
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|a pubmed24n0624.xml
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|a DE-627
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|e rakwb
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| 041 |
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|a eng
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| 100 |
1 |
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|a Martini, Cyril
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Dye-adsorption-induced gelation of suspensions of spherical and rodlike zinc oxide nanoparticles in organic solvents
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|c 2009
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|a Date Completed 19.01.2010
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|a Date Revised 16.12.2009
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a The adsorption of amphiphilic Ru(II) complex Z907 onto the surface of ZnO nanospheres and nanorods causes the gelation of organic solvents, such as THF and acetone. The gels are thermally stable at very low concentration (nanoparticle volume fraction phi = 0.009) but mechanically fragile, with the behavior being dependent on the nature of the solvent, nanoparticle concentration, and the Z907/ZnO mole/weight ratio. Rheological experiments confirmed that the solid component built up a network to give a viscoelastic gel-phase material with a weak value of storage modulus G'. However, TEM and SEM experiments did not give evidence that nanoparticle long-range ordering occurred under the experimental conditions investigated. Moreover, time-dependent SAXS measurements pointed to a decrease in the nanoparticle aggregate size upon gelation. All together, the data obtained might be rationalized in terms of the aggregate-to-aggregate transition in solution, with the primitive large aggregates giving rise to smaller ones upon reaction with Z907. The resulting smaller hybrid aggregates could be the active species that act as self-assembling components in the gelation process. Given the interesting electronic and photonic properties of zinc oxide nanoparticles, such hybrid organic-inorganic gels could open new directions in materials science, low-cost electronics, and photovoltaics
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|a Journal Article
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1 |
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|a Stadler, Florian J
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Said, Aurore
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Heresanu, Vasile
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Ferry, Daniel
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Bailly, Christian
|e verfasserin
|4 aut
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1 |
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|a Ackermann, Jörg
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Fages, Frédéric
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 25(2009), 15 vom: 04. Aug., Seite 8473-9
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|x 1520-5827
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|g volume:25
|g year:2009
|g number:15
|g day:04
|g month:08
|g pages:8473-9
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