In conclusion, our results indicate that thermal denaturation of RIα involves a partial loss of native packing (native state → partially unfolded), as suggested by DSC and MD simulations, with subsequent self-association via β-type aggregation (partially unfolded → cross-β-intermolecular aggregates → disc-like soluble aggregates), as indicated by CD, ThT fluorescence and AFM experiments.
No fibril-type aggregation of RIα was however observed, although soluble aggregates clearly were formed.
However, Chol-TPV shows the non-typical H-type aggregation under other conditions.
It was concluded that H-type aggregation was mainly dependent on both MC 540 and PEI concentrations.
Based on an analysis of the UV vis and photoluminescence spectra, Chol-TPV shows the typical H-type aggregation at saturated concentration in 80% aqueous THF.
The H-type aggregation precludes photoisomerization, thus requiring a higher laser power for the maximum induced birefringence to be achieved in LB films of PMDI/CdSt.
UV Vis spectroscopy data of the deposited mixed LB films indicate H-type aggregation for PMDI/CdSt, in contrast to PIPDI/CdSt and other azopolymers investigated earlier.
In good contrast, homoleptic analogue 2 prefers to J-type aggregation and this results in relatively lower electron and hole mobility, around 0.041 and 0.0026 cm2 V−1 s−1 in air, respectively, for the devices fabricated.
Depending mainly on the hydrogen bond between one octylaminophenyl group at meso-attached phenyl group of porphyrin ligand in 1 and one aza-nitrogen atom of the phthalocyanine ring in the neighboring molecule of 1, 1 self-assembled into nano-rods with J-type aggregation.
In good contrast, introduction of four octylaminophenyl groups onto the meso-attached phenyl groups of the porphyrin ligand in 2, induces more N H⋯N hydrogen bonds between neighboring molecules of 2, induces the formation of nano-sheets with H-type aggregation.
From this, we can define our revealed preference counterparts of these Gorman-type aggregation conditions.
