2 research outputs found
H‑Aggregates Granting Crystallization-Induced Emissive Behavior and Ultralong Phosphorescence from a Pure Organic Molecule
Get PDFSolid-state
luminescent materials with long lifetimes are the subject
of ever-growing interest from both a scientific and a technological
point of view. However, when dealing with organic compounds, the achievement
of highly efficient materials is limited by aggregation-caused quenching
(ACQ) phenomena on one side and by ultrafast deactivation of the excited
states on the other. Here, we report on a simple organic molecule,
namely, cyclic triimidazole (C<sub>9</sub>H<sub>6</sub>N<sub>6</sub>), <b>1</b>, showing crystallization-induced emissive (CIE)
behavior and, in particular, ultralong phosphorescence due to strong
coupling in H-aggregated molecules. Our experimental data reveal that
luminescence lifetimes up to 1 s, which are several orders of magnitude
longer than those of conventional organic fluorophores, can be realized
under ambient conditions, thus expanding the class of organic materials
for phosphorescence applications
H‑Aggregates Granting Crystallization-Induced Emissive Behavior and Ultralong Phosphorescence from a Pure Organic Molecule
Get PDFSolid-state
luminescent materials with long lifetimes are the subject
of ever-growing interest from both a scientific and a technological
point of view. However, when dealing with organic compounds, the achievement
of highly efficient materials is limited by aggregation-caused quenching
(ACQ) phenomena on one side and by ultrafast deactivation of the excited
states on the other. Here, we report on a simple organic molecule,
namely, cyclic triimidazole (C<sub>9</sub>H<sub>6</sub>N<sub>6</sub>), <b>1</b>, showing crystallization-induced emissive (CIE)
behavior and, in particular, ultralong phosphorescence due to strong
coupling in H-aggregated molecules. Our experimental data reveal that
luminescence lifetimes up to 1 s, which are several orders of magnitude
longer than those of conventional organic fluorophores, can be realized
under ambient conditions, thus expanding the class of organic materials
for phosphorescence applications
