By increasing the coil length, various
morphologies of the large compound micelle, sphere,
or vesicle were observed with different methanol contents.
It was due to the enhancement on the PAA swelling
with methanol and the interfacial tension between the PF
core and PAA corona. By further enhancing the long coil
block, an inverted morphology of sphere or rod with a
PF corona and PAA core was obtained. The core/corona
reversed at a higher methanol content due to the enhanced
solubility of PAA in methanol. The morphological transformation
led to significant blue shifting on the optical
absorption or fluorescence characteristics due to the possible
H-aggregation formation (Fig. 8). The significance on
the – interaction on the polymer micellar structure in
the coil-selective solvent was also demonstrated by our
recent work of poly[2,7-(9,9-dihexylfluorene)]-b-poly[3-
(trimethoxysilyl)propyl methacrylate] (PF-b-PTMSPMA)
By increasing the coil length, variousmorphologies of the large compound micelle, sphere,or vesicle were observed with different methanol contents.It was due to the enhancement on the PAA swellingwith methanol and the interfacial tension between the PFcore and PAA corona. By further enhancing the long coilblock, an inverted morphology of sphere or rod with aPF corona and PAA core was obtained. The core/coronareversed at a higher methanol content due to the enhancedsolubility of PAA in methanol. The morphological transformationled to significant blue shifting on the opticalabsorption or fluorescence characteristics due to the possibleH-aggregation formation (Fig. 8). The significance onthe – interaction on the polymer micellar structure inthe coil-selective solvent was also demonstrated by ourrecent work of poly[2,7-(9,9-dihexylfluorene)]-b-poly[3-(trimethoxysilyl)propyl methacrylate] (PF-b-PTMSPMA)
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