POLYANILINE COLLOIDS PREPARED BY ENZYMATI POLYMERIZATION: MORP TEMPERATURE SENSITIVE OPTICAL

Polyaniline (PANI) colloids have attracted great controlled morphology, electrical conductivity, and have been studied as steric stabilizers 1 and the temperature, stabilizer concentration, and doping agent have be chemical oxidation is carried out in very acidic reaction media, with typical pH even lower. Enzymatic polymerization is an alternative polymerization pathway that is carried out in milder conditions than chemical polymerization. synthesis of "smart" polyaniline colloids using poly(N stabilizer 2 . These colloids are synthesized in water form stability, and optical properties that depend strongly on both the pH and temperature. In Figure 1 we show different polyaniline particles stabilized with poly(N stabilizer. The effect of oxidation rate is evident by comparing with 1c shows the importance of using an adequate counterion during synthesis. In this work, we show the influence of several synthesis parameters on the morphology, colloidal stability and resulting optical properties of the PNIPAM coated PANI colloids