Structurally diverse macrocycle co-crystals for solid-state luminescence modulation

Structurally diverse macrocycle co-crystals for solid-state luminescence modulation

Blog Article

Abstract Organic co-crystals offer an opportunity to fabricate organic functional materials.Traditional co-crystals are generally packed following the segregated or mixed stacking mode, leading to the lack of structural and functional diversity.Herein, we report three sets of macrocycle co-crystals with identical co-constitutions.The macrocycle co-crystals differ in Orthopedics the stoichiometric ratios (2:1, 1:1, and 2:3) of the constituents and molecular packing modes.The co-crystals are constructed using triangular pyrene-macrocycle and 1,2,4,5-tetracyanobenzene exploiting exo-wall charge-transfer interactions.

Interestingly, the three co-crystals exhibit distinct, tunable emission properties.The corresponding emission peaks appear at 575, 602, and 635 nm, covering yellow via orange to red.The X-ray diffraction analyses and the density functional theory calculations reveal the superstructure-property relationships Shower Oil that is attributed to the formation of different ratios of charge-transfer transition states between the donor and acceptor motifs, resulting in red-shifted luminescence.