Ternary Phase Diagram for the Belousov−Zhabotinsky Reaction-Induced Mechanical Oscillation of Intelligent PNIPAM Colloids
| Autor: | Srinivasa R. Pullela, Zhengdong Cheng, Manuel Marquez, Jingyi Shen |
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| Rok vydání: | 2007 |
| Předmět: |
Acrylic Resins
chemistry.chemical_element Models Biological Catalysis Phase Transition Ruthenium Coordination complex Bipyridine chemistry.chemical_compound Colloid 2 2'-Dipyridyl Oscillometry Organometallic Compounds Colloids Particle Size Physical and Theoretical Chemistry Phase diagram chemistry.chemical_classification Acrylamides Molecular Structure Bromates Chemistry Oscillation Substrate (chemistry) Sodium Compounds Malonates Belousov–Zhabotinsky reaction Models Chemical Physical chemistry Gels |
| Zdroj: | The Journal of Physical Chemistry A. 111:12081-12085 |
| ISSN: | 1520-5215 1089-5639 |
| DOI: | 10.1021/jp072574x |
| Popis: | Belousov-Zhabotinsky (BZ) reaction-induced mechanical oscillation of poly(N-isopropylacrylamide) (PNIPAM) gel particles was investigated by the systematic variation of BZ substrate concentrations. The correlation between the dynamic behavior and substrate concentrations was presented in a ternary phase diagram. Both oscillatory and steady-state regimes exist on the phase diagram and are separated by a high-frequency oscillation band. Dependence of oscillation frequency and induction time on the substrate concentrations was also studied. To achieve size uniformity, these PNIPAM gel particles with covalently bound tris(bipyridyl)ruthenium(II) were synthesized via the coordination chemistry between a ruthenium complex and the monodispersed PNIPAM gel particles bearing bipyridine ligands. |
| Databáze: | OpenAIRE |
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