Temperature-controlled liquid crystalline polymorphism of gold nanoparticles
| Autor: | Ewa Gorecka, Jerzy Romiszewski, Damian Pociecha, Jozef Mieczkowski, Monika Gora, Michał Wójcik |
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| Rok vydání: | 2011 |
| Předmět: |
Materials science
Hexagonal crystal system Liquid crystalline Nanoparticle Nanotechnology General Chemistry Condensed Matter Physics Temperature induced Organic molecules Condensed Matter::Soft Condensed Matter Metal Chemical engineering Polymorphism (materials science) Colloidal gold visual_art visual_art.visual_art_medium |
| Zdroj: | Soft Matter. 7:10561 |
| ISSN: | 1744-6848 1744-683X |
| DOI: | 10.1039/c1sm06436c |
| Popis: | Gold nanoparticles grafted with promesogenic ligands show temperature induced liquid crystalline polymorphism with unique phase sequence: from smectic to columnar structure. The transition is entropy driven; with increasing temperature ligands attached to nanoparticle surface require more space to fluctuate. In result smectic layer becomes deformed (‘peristaltic mode’) and voids between metal particles filled with organic molecules form a hexagonal structure. |
| Databáze: | OpenAIRE |
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