Nanoparticle Assembly at Fluid Interfaces: Structure and Dynamics

@article{citeulike:2735554, abstract = {Abstract: The self-assembly of nanoparticles at fluid interfaces, driven by the reduction in interfacial energy, was investigated. With spherical, tri-n-octyl-phosphine-oxide covered cadium selenide (CdSe) nanoparticles (1-8 nm), thermal fluctuations compete with the interfacial segregation giving rise to a size-dependent self-assembly of the particles. The structure of the nanoparticle assembly was studied using electron microscopy, atomic force microscopy, and X-ray scattering in situ, which indicate that the particles form a densely packed monolayer. The energetics of the adsorption of nanoparticles onto the interface was revealed by time-dependent fluorescence studies on a mixture of two different sized nanoparticles at the interface. The dynamics of the nanoparticles at the fluid interface, probed using fluorescence photobleaching methods, suggests a liquid-like behavior. The results have implications in the design of hierarchical self-assemblies of nanoparticles for the one-step fabrication of devices on multiple length scales.}, address = {Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003, Australian Nuclear Science and Technology Organization, PMB 1, Menai 2234, Australia, and Department of Physics, University of Massachusetts, Amherst, Massachusetts 01003}, author = {Lin, Y. and Boker, A. and Skaff, H. and Cookson, D. and Dinsmore, A. D. and Emrick, T. and Russell, T. P. }, citeulike-article-id = {2735554}, doi = {10.1021/la048000q}, journal = {Langmuir}, keywords = {dinsmore, emulsion, interface, nano}, month = {January}, number = {1}, pages = {191--194}, posted-at = {2008-04-29 23:21:12}, priority = {2}, title = {Nanoparticle Assembly at Fluid Interfaces: Structure and Dynamics}, url = {http://dx.doi.org/10.1021/la048000q}, volume = {21}, year = {2005} }

TY - JOUR ID - citeulike:2735554 L3 - citeulike-article-id:2735554 TI - Nanoparticle Assembly at Fluid Interfaces: Structure and Dynamics JF - Langmuir VL - 21 IS - 1 SP - 191 EP - 194 AD - Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003, Australian Nuclear Science and Technology Organization, PMB 1, Menai 2234, Australia, and Department of Physics, University of Massachusetts, Amherst, Massachusetts 01003 N2 - Abstract: The self-assembly of nanoparticles at fluid interfaces, driven by the reduction in interfacial energy, was investigated. With spherical, tri-n-octyl-phosphine-oxide covered cadium selenide (CdSe) nanoparticles (1-8 nm), thermal fluctuations compete with the interfacial segregation giving rise to a size-dependent self-assembly of the particles. The structure of the nanoparticle assembly was studied using electron microscopy, atomic force microscopy, and X-ray scattering in situ, which indicate that the particles form a densely packed monolayer. The energetics of the adsorption of nanoparticles onto the interface was revealed by time-dependent fluorescence studies on a mixture of two different sized nanoparticles at the interface. The dynamics of the nanoparticles at the fluid interface, probed using fluorescence photobleaching methods, suggests a liquid-like behavior. The results have implications in the design of hierarchical self-assemblies of nanoparticles for the one-step fabrication of devices on multiple length scales. KW - dinsmore KW - emulsion KW - interface KW - nano AU - Lin, Y AU - Boker, A AU - Skaff, H AU - Cookson, D AU - Dinsmore, AD AU - Emrick, T AU - Russell, TP PY - 2005/01/04/ UR - http://dx.doi.org/10.1021/la048000q ER -