Nanofibrils Morphology, oriented

As mentioned previously, mesoscale crystalline morphologies and molecular orientation of HT-PATs in solution-deposited films can be controlled through different solution-processing methods and subsequent thermal treatments [15,17,23,35,36,44,59,89]. Figures 5.2.18 and 5.2.19 represent typical examples for tunable crystalline morphologies and molecular orientations of HT-PHT in solution-deposited films. First, in terms of mesoscale morphologies, HT-PHT (M = 18.8 kDa) films drop-cast from CHCI3 show weU developed nanofibrils interconnected with each other, while the spin-cast... 

Fibrillar samples consist of oriented crystallites arranged into needlelike structures of various sizes. There is little consensus of opinion in the literature regarding the nomenclature or sizes of the features that comprise the fibrillar morphology (see, e.g.. Refs. 8-11). However, it is clear that a hierarchy of sizes exists macrofibrils consist of bundles of microfibrils, which in turn are composed of bundles of nanofibrils. Typical macrofibrils (which are visible to the naked eye) may be up to several hundred micrometers thick with a length... 

---