Electronic and vibrational circular dichroism spectroscopies for the understanding of chiral organization in porphyrin aggregates

• Dichroic optical spectroscopies and theoretical modelling have been used to describe the structure of aggregates of porphyrins in their gels in terms of: (i) the formation of helicoidal structures, (ii) the sign of the handedness, (iii) their extent and degree of structural order, and (iv) the annealing of the structural defects.

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