Encapsulation of functional moieties within branched star polymers: effect of chain length and solvent on site isolation.

摘要: Porphyrin and pyrene photoactive cores have been encapsulated within an isolating polymeric shell using efficient general strategy based on the use of dendritic initiators for ring-opening polymerization e-caprolactone to yield functional core star polymers. The isolation functionalities has studied fluorescence quenching resonance energy transfer (FRET) techniques as well solvatochromic probes. With increasing chain length solvent polarity, enhanced site observed. These findings correlated actual molecular dimensions independently measured by pulsed field gradient spin−echo (PGSE) NMR. developed synthetic methodology offers a rapid route encapsulation moieties therefore potential design new materials.