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In natural light-harvesting systems, chirality represents a crucial point being one of the recurrent motifs. The ability to tune supramolecular chirality both on nano and meso scale is a key topic on the design of mimetic antenna systems. Here we describe a non-covalent approach to achieve mesoscopic clusters, based on spermine and the diacid form of TPPS4 porphyrin, having a sea urchin-like morphology,...
When mixtures of D2O/DCl are used to foster the self‐assembly formation of TPPS4 porphyrin J‐aggregates in aqueous solutions, an inverse kinetic isotope effect of 0.4 and an inverse equilibrium isotope effect of 0.6 are clearly detected. Most importantly, the addition of at least 10 % D2O causes an inversion in the handedness of the final chiral J‐aggregates, thus evidencing an important role of deuterium...
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