“…We should bear in mind that the fabrication of nitrostilbene LB films is difficult, leading to ill-defined multilayers due to the large tendency for aggregation into 3D structures because of the strong cohesive forces among molecules, as reported before [29]. The molecule we present here has the particularity of containing two alkyl chains, versus other previously studied nitrostilbenes without hydrophobic chains [29,30] or with only one chain [14][15][16]22]. Molecules having two alkyl chains have been reported to produce more stable and higher quality LB films than those having only one alkyl chain [31][32][33].…”
“…We should bear in mind that the fabrication of nitrostilbene LB films is difficult, leading to ill-defined multilayers due to the large tendency for aggregation into 3D structures because of the strong cohesive forces among molecules, as reported before [29]. The molecule we present here has the particularity of containing two alkyl chains, versus other previously studied nitrostilbenes without hydrophobic chains [29,30] or with only one chain [14][15][16]22]. Molecules having two alkyl chains have been reported to produce more stable and higher quality LB films than those having only one alkyl chain [31][32][33].…”
“…As shown in Figure , we find that the characteristic nanoparticle size decreases with increasing affinity (i.e., strength of interaction) between the polymer and the iron oxide particles. The qualitative assessment of the chemical affinity between the surfaces of the iron oxide nanoparticles and the functional groups in the various polymers is based on the extensive catalysis literature concerning the reactivity and the molecular mechanisms of interactions between small organic molecules and metal oxide surfaces. − When polymers are brought into contact with metal oxide nanoclusters, the chemical reactions should be similar if not identical to those of their small molecule counterparts with continuous surfaces, and hence, much can be learned from these latter systemsregarding fundamental aspects of adhesion interactions. − Therefore, in the particular systems studied here, the order of the extent of interaction with the iron oxide nanoclusters is as follows: PC ≥ PMMA > PSF > PVDF > PS. 2 Equilibrium diameter of iron oxide nanoparticles synthesized in different polymeric matrices.…”
The ability to design nanomaterial characteristics requires exact control of particle structure due to the sensitive relationship between the material properties and the particle size and morphology. Borrowing nature's approach where biomineralization is controlled by macromolecules, synthetic polymeric matrices are used to guide the formation of stable, monodisperse iron oxide nanoparticles uniformly distributed in the polymeric matrix. Particle size, size distribution, and morphology are determined by the polymer-particle interactions and are independent of the chain molecular weight: γ-Fe2O3 particles formed in strongly interacting polymeric media are small (∼10-20 nm) and pyramidal in shape, while those formed in weakly interacting media are larger (∼40-60 nm) and spherical. This synthesis method can be easily extended to a variety of inorganic nanoparticle chemistries, thereby enabling exact control over material properties.
“…Ehara et al [24] showed that molecular alignment will take place if the molecules are adsorbed onto a solid surface with an appropriate surface structure. Even though it is very difficult to give an in situ measurement of this ordering state and up to date there is hardly report on the observation of it during real TFL process, the ordered property of liquid molecules has drawn more and more broad concerns.…”
Section: Verification Of the Ordered Film Modelmentioning
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