Chemical Stimulus-Triggered Transformation of Particles

These results show that pyridine served as a catalyst for particle formation. In this way, the reversible formation of submicrospheres led to a system capable of self-assembly in response to pH changes. It is also of interest that the submicrospheres have a morphological signalling capability toward saccharides. 

The formation of fibre-like structures was evident from the NMR spectra. 

NMR spectra of (a) fibrous aggregates and (b) particles in DMSO-dj, isolated after aging with pGal and pGlc at room temperature for 5 days. (Reproduced with permission of Wiley-VCH Verlag GmbH from ref. 17.) 

---