Reconfigurable pickering emulsions with functionalized carbon nanotubes

Ngo, Quynh P. ; He, Maggie ; Concellón, Alberto ; Yoshinaga, Kosuke ; Luo, Shao-Xiong Lennon ; Aljabri, Nouf ; Swager, Timothy M.

Resumen: Pickering emulsions (PEs) achieve interfacial stabilization by colloidal particle surfactants and are commonly used in food, cosmetics, and pharmaceuticals. Carbon nanotubes (CNTs) have recently been used as stabilizing materials to create dynamic single emulsions. In this study, we used the formation of Meisenheimer complexes on functionalized CNTs to fabricate complex biphasic emulsions containing hydrocarbons (HCs) and fluorocarbons (FCs). The reversible nature of Meisenheimer complex formation allows for further functionalization at the droplet–water interface. The strong affinity of fluorofluorescent perylene bisimide (F-PBI) to the CNTs was used to enhance the assembly of CNTs on the FC–water interface. The combination of different concentrations of the functionalized CNTs and the pelene additive enables predictable complex emulsion morphologies. Reversible morphology reconfiguration was explored with the addition of molecular surfactants. Our results show that the interfacial properties of functionalized CNTs have considerable utility in the fabrication of complex dynamic emulsions.

Idioma: Inglés

DOI: 10.1021/acs.langmuir.1c00904

Año: 2021

Publicado en: Langmuir 37, 27 (2021), 8204-8211
ISSN: 0743-7463

Factor impacto JCR: 4.331 (2021)

Categ. JCR: CHEMISTRY, PHYSICAL rank: 74 / 165 = 0.448 (2021) - Q2 - T2
Categ. JCR: CHEMISTRY, MULTIDISCIPLINARY rank: 72 / 179 = 0.402 (2021) - Q2 - T2
Categ. JCR: MATERIALS SCIENCE, MULTIDISCIPLINARY rank: 138 / 344 = 0.401 (2021) - Q2 - T2

Factor impacto CITESCORE: 6.7 - Physics and Astronomy (Q1) - Materials Science (Q1)

Factor impacto SCIMAGO: 0.884 - Condensed Matter Physics (Q1) - Electrochemistry (Q1) - Surfaces and Interfaces (Q1) - Spectroscopy (Q1) - Materials Science (miscellaneous) (Q1)

Tipo y forma: Artículo (PostPrint)