An example case of selective morphology by simply varying pH and heating profile based on a diblock copolymer, i e., poly(N-isopropylacrylamide) (PNI-PAAM) and poly[2-(dimethylamino)ethyl acrylate] (PDMAEA) is reported A variation of pH induces an aggregation of the block copolymers in either micelles or vesicles In a subsequent step, temperature variation triggers the formation of vesicular, structures. This demonstrates not only the temperature but also the heating rate that tunes the nanostructures from micelles to vesicles. (C) 2009 Wiley Periodicals, Inc J Polym Sci Part A Polym Chem 47: 6783-6788, 2009