Novel Semiconducting Polymer Particles by Supercritical Fluid Process

✍ Scribed by Kwon Taek Lim; Ganapathy Hullathy Subban; Ha Soo Hwang; Jung Taek Kim; Chang Sik Ju; Keith P. Johnston

• Publisher: John Wiley and Sons
• Year: 2005
• Tongue: English
• Weight: 205 KB
• Volume: 26
• Category: Article
• ISSN: 1022-1336
• DOI: 10.1002/marc.200500438

✦ Synopsis

Abstract

Summary: A simple method to prepare surfactant‐free and solvent‐free semiconducting polymer particles by using an environmentally benign supercritical carbon dioxide (scCO~2~) process is reported. The process of the rapid expansion of supercritical solutions (RESS) is used to produce spherical particles of poly[2‐(3‐thienyl)acetyl 3,3,4,4,5,5,6,6,7,7,8,8,8‐tridecafluorooctanoate] (PSFTE), 50–500 nm in size, from 0.1–0.5 wt.‐% PSFTE solutions in CO~2~ at pre‐expansion temperatures of 40 °C and pre‐expansion pressures of 276 bar.

An FESEM image of PSFTE particles produced by the RESS process with CO~2~.

magnified imageAn FESEM image of PSFTE particles produced by the RESS process with CO~2~.