+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Water/ionic liquid interfaces as fluid scaffolds for the two-dimensional self-assembly of charged nanospheres

, : Water/ionic liquid interfaces as fluid scaffolds for the two-dimensional self-assembly of charged nanospheres. Langmuir 27(4): 1281-1285

Liquid-liquid interfaces formed between water and ionic liquids serve as fluid scaffolds to self-assemble anionic nanospheres two-dimensionally. When aqueous dispersions of anionic fluorescent polystyrene nanospheres (diameter ∼500 nm) are layered on ionic liquids, ordered monolayers are spontaneously formed at the interface. Fluorescent nanospheres are hexagonally packed in the interfacial monolayers, as observed by confocal laser scanning microscopy (CLSM). The adsorption and alignment of nanospheres at the interface are affected by the ionic strength and pH of the aqueous phase, indicating electrostatic interaction as the primary driving force for the self-assembly. CLSM observation of the water/ionic liquid interface reveals that the lower hemisphere of nanospheres is exposed to the ionic liquid phase, which effectively alleviates lateral electrostatic repulsion between charged nanospheres and promotes their close packing. The densely packed monolayer structure of nanospheres is stably immobilized on the surface of CLSM glass dishes simply by rinsing the ionic liquid layer with pure water, probably as a consequence of the gluing effect exerted by imidazolium cations. The fluidic nature of the water/ionic liquid interface facilitates the diffusion and ordering of nanospheres into a hexagonal lattice, and these features render the interface promising soft scaffolds to self-assemble anionic nanomaterials two-dimensionally.


PMID: 21218812

DOI: 10.1021/la1038987

Other references

Watanabe, K.H.masaki, M.N.kashima, Y.K.kita, Y.M.ake, F., 1994: High-frequency transformation of Lactobacillus casei with plasmid pHY300PLK by electroporation. To optimize the conditions for transformation of Lactobacillus casei ATCC 27092 cells with plasmid pHY300PLK, a shuttle vector for Escherichia coli and Bacillus subtilis, by electroporation, we investigated the effects of the electrical parameters...

Huttunen, R.; Syrjänen, J., 2010: Heparin-binding protein: a potential biomarker in sepsis?. Clinical Infectious Diseases 50(2): 283-4; Author Reply 284-5

Szecsenyi, L., 1985: The description of the female of Brachionycha syriaca decipulae Kovacs, 1966 (Leipidoptera: Noctuidae). Folia entomologica Hungarica: Rovartani kozlemenyek6(2): 169-172

Hasley, D.E., 1931: Further Studies on Brucella abortus in Certified Milk. American Journal of Public Health and the Nation's Health 21(5): 515-518

Picard D.; Gerster T.; Leanderson T.; Schaffner W.; Serfling E., 1984: Transcriptional enhancers of immunoglobulin genes. Journal of Embryology & Experimental Morphology 82(SUPPL): 189

Meyer, J.; Felix, J.; Naidu, Y.; Lentrichia, B., 2001: HPV genotypes in southern California HPV type differentiation requirements for triage of ASCUS Pap specimens. Laboratory Investigation 81(1): 57A, January

Böcker-Meffert, S.; Rosenstiel, P.; Röhl, C.; Warneke, N.; Held-Feindt, J.; Sievers, J.; Lucius, R., 2002: Erythropoietin and VEGF promote neural outgrowth from retinal explants in postnatal rats. Purpose. Recent studies have reported neuroprotective effects of erythropoietin (EPO) and vascular endothelial growth factor (VEGF). The purpose of the present study was to clarify their influence on neurite outgrowth and regeneration of rat retin...

Lohmann Siegel, K.; Hicks, J.E.; Koziol, D.E.; Gerber, L.H.; Rider, L.G., 2004: Walking ability and its relationship to lower-extremity muscle strength in children with idiopathic inflammatory myopathies. To describe gait deficits and their association with lower-extremity muscle strength in children with juvenile idiopathic inflammatory myopathies (IIM). Cross-sectional, descriptive study. Clinical research center. Consecutive sample of 25 ambulat...

Rogov, I.; Zhukov, N.; Skriabin, V., 1975: Determining the depth of penetration of infrared energy in food products. Izvestiia vysshikh uchebnykh zavedenii Pishchevaia tekhnologiia: 151-152

Olubayo R.O., 1992: Changes of peripheral blood leukocytes subpopulation in african buffalo and ndama cattle following tsetse transmitted trypanosoma congolense infection. Annales de la Societe Belge de Medecine Tropicale 72(SUPPL 1): 98