Synthesis, structure and photophysical properties of a 2-(1′-hydroxypyrenyl)benzothiazole

• A pyrene based ESIPT chromophore was synthesized.
• Planar molecular structure was determined by X-ray crystallography.
• The chromophore possesses high efficient solid-state emission.

A pyrene-based 2-aryl-benzothiazole derivative, 2-(1′-hydroxypyrenyl)benzothiazole (1H2PBT), was synthesized. Its crystal structure and photophysical properties were investigated. In comparison with the generally studied parent compound, 2-(2′-hydroxyphenyl)benzothiazole (HBT), 1H2PBT exhibited red-shifted absorption and emission in solution, as well as impressive solid state emission with high efficiency (0.35).

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