POLYMEROSES - PREPARATION, PROPERTIES AND APPLICATIONS Nanotechnology: Covers the potential applications of all nano-sized materials (1 to 100 nm) in different fields ranging from materials science, medicine, etc . It deals with the exploitation of nanoparticles that show improved properties with changes in size such as conductivity, high surface area etc, which makes them more responsive and exciting to work with. It has become a revolutionary field by reducing bulky objects down to the nano level, thus increasing their potential. Nanoparticles: They are particles having dimensions mainly between 1 and 100 nm, but this limit can also be extended to a few hundred nanometers, with particles between 1 and 10 nanometers called nanoclusters, while nanopowders are agglomerations of ultrafine particles, nanoparticles or nanoclusters .Single-domain ultrafine particles are often called nanocrystals. These nanoparticles have optical, mechanical, electrical, etc. properties. improved to these size levels and are highly preferred for a myriad of purposes, for example: biological applications such as cell therapies (drug delivery), catalysts for reactions, nanoelectronics, etc. This is due to their superconducting nature, extreme strength and other superior properties compared to bulk. Selective Applications: Healthcare: Quantum dots are nanoparticles used for bioimaging, cerium oxide nanoparticles have been used as antioxidants. Industrial: Zinc oxide nanoparticles dispersed in industrial coatings protect wood, plastic and fabrics from exposure to UV rays.Electronics: Silver nanoparticles have been used as ink for PCB purposes.Pt-Co nanoparticles as catalysts for fuel cells.Environment: Iron oxide to clean up CCl4 and arsenic in water bodies. POLYMEROSOMES We will examine a particular type of nanoparticles known as polymersomes. Polymerosomes are vesicles formed by the self-assembly of amphiphilic block copolymers (both hydrophobic and hydrophilic). , or multi-block or grafted structures prepared by methods such as living polymerization techniques, such as atom transfer free radical polymerization, reversible addition fragmentation chain transfer, ring-opening metathesis polymerization etc. It has been found that polymersomes together with micelles are the most common and stable structures of amphiphilic molecules in water 11. Since they have a hydrophobic core and an internal fluid cavity, they can encapsulate both hydrophilic and hydrophobic moieties. Surface functionalization of these nanocarriers allows specific targeting to desired cells. Hydrophilic polymers: polyethylene glycol, polybutadiene, poly-trimethylene carbonate etc..