Assembly of Latex Supraparticles - Data
Different types of supraparticles and composites from mm-sized negatively charged (sulfate) or positively charged (amidine) latexes were assembled. Examples of obtained colloidal structures are presented below.
Scale bar = 10 mm
a, b) 2D Ordered hollow spherical shells from sulfate latexes. c) Ordered hollow spherical shells from amidine latexes. d) Small ordered 2D sheets of latex particles. e) Spherical ball-like 3D aggregates from amidine latex. f) Composite supraparticles with aggregated amidine latex core and sulfate latex shell.
The obtained supraparticles can find application as novel materials in catalysis, medicine, etc. We were also able to scale the process down to nanometer scale by assembling ferritin molecules onto liposomes (next slide). Further development in this area holds promises for nanoparticle and nanodevice technologies.
O.D. Velev, K. Furusawa and K. Nagayama, "Assembly of Latex Particles by Using Emulsion Droplets as Templates 1. Microstructured Hollow Spheres", Langmuir, 12, 2374 (1996).
O.D. Velev, K. Furusawa and K. Nagayama, "Assembly of Latex Particles by Using Emulsion Droplets as Templates 2. Ball-like and Composite Aggregates", Langmuir, 12, 2385 (1996).
O.D. Velev and K. Nagayama, "Assembly of Latex Particles by Using Emulsion Droplets 3. Reverse (Water in Oil) Systems", Langmuir, 13, 1856 (1997).
© Copyright O. D. Velev 1998