Thiourea (TU) is a versatile functional scaffold in catalysis, sensing, and medicinal chemistry, owing to its strong electron-donating character. However, the photophysical parameters governing the efficiency of TU derivatives in photoinduced electron transfer (PET) remain poorly understood. Here, we systematically inv...
Generating triplet states in dye molecules that do not undergo conventional intersystem crossing is of interest for a variety of applications. In this work, the photophysical processes that occur in a terrylene bisimide (TBI) cyclophane and in its host-guest complex with 1,6-dibromopyrene (Ka = 1.5 × 104 M-1 in dichlor...
Merocyanine (MC) dyes are among the most versatile and tunable chromophores owing to their structural flexibility. However, their excited state dynamics, which often lead to fluorescence quenching by ultrafast non-radiative decay pathways such as photoisomerization or relaxation through conical intersections, are poorl...
Shape-persistent pyrene-embedded macrocycles remain scarce, and tubular conjugated molecules with intrinsic donor–acceptor (D–A) character have only recently emerged, largely within [n]cyclo-para-phenylene-based systems. Here we introduce a structurally distinct pyrene-containing nanotube (Pyr4), synthesized through...
Water-soluble alanine-functionalized perylene diimide derivatives (PDI-Ala) were synthesized by introducing alanine units at the imide positions of the PDI framework. Their photoluminescence properties and supramolecular aggregation behavior were investigated in solvents of varying polarity. Chiral L-PDI-Ala displayed...
Electron donor-acceptor (EDA) complexes, formed through noncovalent interactions between electron-rich and electron-deficient species, can undergo photoinduced charge transfer to access reactive radical intermediates. However, rapid and unproductive back electron transfer (BET) limits their synthetic utility. Herein, w...
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