Thermo-reversible gels of polymers entail non-covalent network formation, immobilizing a solvent. Self-assembly of perylene diimide (PTCDI) via pi interaction is well known. Using such a large aromatic molecule as part of an amphiphilic polymer system, we have prepared gels of PDMS-PTCDI and PDMS-PTCDI-PDMS with propylamine as the solvent. With the rod-coil PDMS-PTCDI, the gel consists of micellar aggregates, while a network of fibres is seen in the gels of the coil-rod-coil molecule PDMS-PTCDI- PDMS. Thermo-reversibility was confirmed using DSC analysis. 

Thermo-reversible gelation of rod-coil and coil-rod-coil molecules based on poly (dimethyl siloxane) and perylene diimide

245th National Meeting (2013)

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