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Issue 38, 2019
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Polymorphism and resulting luminescence properties of 1-acetylpyrene

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Abstract

Structures of three polymorphs of 1-acetylpyrene were determined using single-crystal X-ray diffraction and their solid state luminescence was investigated. While the formerly known 1AP-α polymorph, with its herringbone packing motif, is proved to be non-luminescent, the newly discovered polymorphs β and γ, with crystal structures based on π⋯π-dimers, luminesce intensely in blue and green accordingly. This discovery contradicts a possibility of systematic control over the packing of pyrene units in crystals by progressive addition of acetyl groups, formerly claimed for n-acetyl-pyrenes.

Graphical abstract: Polymorphism and resulting luminescence properties of 1-acetylpyrene

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Article information


Submitted
01 Aug 2019
Accepted
16 Aug 2019
First published
20 Aug 2019

CrystEngComm, 2019,21, 5845-5852
Article type
Paper

Polymorphism and resulting luminescence properties of 1-acetylpyrene

D. Tchoń, D. Trzybiński, A. Wrona-Piotrowicz and A. Makal, CrystEngComm, 2019, 21, 5845
DOI: 10.1039/C9CE01203F

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