Revealing Factors Governing Self-Assembly Morphology of Fatty Acid on Graphene Synthesized by Surfactant-Assisted LPE: A Joint MD, SAPT(DFT), and Experimental Study
| Autor: | Mahnaz Khosravian, Soheila Javadian |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
chemistry.chemical_classification
Materials science Graphene Biomolecule Substrate (chemistry) 02 engineering and technology Photothermal therapy 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention Colloid Molecular dynamics General Energy chemistry Chemical engineering law Graphite Self-assembly Physical and Theoretical Chemistry 0210 nano-technology |
| Zdroj: | The Journal of Physical Chemistry C. 122:21387-21400 |
| ISSN: | 1932-7455 1932-7447 |
| DOI: | 10.1021/acs.jpcc.8b05057 |
| Popis: | The production of graphene nanosheets from graphite with the assistance of biological molecules in water medium as well as understanding the morphology of the resulting self-assembly are important in fields of drug delivery, cell imaging, and photothermal therapy. Hence, in this contribution, we have applied docosahexaenoic acid (DHA) fatty acid to disperse graphite. The morphology of self-assembly on the graphene surface and the factors tailoring the morphology were surveyed in light of classical molecular dynamic (MD) and symmetry-adapted perturbation theory (SAPT). The factors such as surface density, environment pH, substrate size, and number of layers were taken into account. The results show that the decrease in pH transmutes the nature of the classical electrostatic interaction between the surfactants from repulsion to attraction, leading to a decline in the stability of the colloidal systems. When the lateral size of the graphene sheet is three times larger than the length of DHA, hemicylinder str... |
| Databáze: | OpenAIRE |
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