Reverse Thermal Organogel


  • This work was supported by the Korea Research Foundation Grant funded by the Korean Government (MOEHRD) (KRF-2005-C00300) and the SRC program of MOST/KOSEF (R11-2005-008-00000-0). Supporting Information is available online from Wiley InterScience or from the author.


original image

Poly(ethylene glycol)-polypeptide diblock copolymer solutions undergo a clear-sol-to-clear-gel transition (reverse thermal gelation) as the temperature increases at as low a concentration as 1.0 wt % in chloroform (see figure). The micellar aggregation model involving desolvation of the poly(ethylene glycol) is suggested for the unique behavior of the polymer solution.