Title
Chiral Diketopyrrolo[3,4-c]Pyrrole–1,2,3-1H-Triazole Dyes with Highly Tunable Properties in Solution and Thin Films
Author
Albano, Gianluigi, Francesco Zinna, Andrea Taddeucci, Maria Annunziata M. Capozzi, Gennaro Pescitelli, Angela Punzi, Lorenzo Di Bari, and Gianluca M. Farinola
Year
2023
Journal
Chemistry – A European Journal
Abstract
We studied the impact of achiral substituents on the chiral supramolecular architectures of diketopyrrolo[3,4-c]pyrrole–1,2,3-1H-triazole (DPP) dyes. We decorated the same chiral DPP motif with substituent groups on the nitrogen atoms of the lactam moiety: the hydrophobic n-octyl alkyl chain, the hydrophilic triethylene glycol (TEG) chain and the thermo-cleavable t-butoxycarbonyl (t-Boc) carbamate group. In spite of identical conjugated chromophore and chiral appendage, in aggregated form the three dyes displayed profoundly different optical, chiroptical, electrochemical and thermal features. ECD measurements revealed differences in the aggregation modes, which would be inaccessible by most other techniques. We found strong chiroptical features, which would have major implications in the context of chiral organic opto-electronics and in the development of other highly innovative technological applications.
Instrument
V-650,J-710
Keywords
chirality,diketopyrrolo[3,4-c]pyrroles,organic dyes, supramolecular chemistry,1,2,3-1H-triazoles