A synthesis of novel fluorescent 2-azolyl-6-piperidinylpurine derivatives was designed. Azolyl substituent at purine C-2 atom was introduced via nucleophilic aromatic substitution or in the case of tetrazolyl and 1,2,3-triazolyl substituents via a ring formation on a preinstalled amine or azide moiety, respectively. The obtained purine intermediates were functionalized at N-9 position using Mitsunobu reaction conditions to achieve amorphous compounds, which form thin-layer films of good quality. The synthesized push-pull systems exhibited fluorescence with emission in range of 360–400 nm and quantum yields up to 66% in CH2Cl2 solution and up to 45% in the thin-layer film.
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This work was supported by the ERDF 1.1.1.1 activity project No. 1.1.1.1/16/A/131 “Design and Investigation of Light Emitting and Solution Processable Organic Molecular Glasses”.
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Published in Khimiya Geterotsiklicheskikh Soedinenii, 2021, 57(5), 560–567
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Sebris, A., Traskovskis, K., Novosjolova, I. et al. Synthesis and photophysical properties of 2-azolyl-6-piperidinylpurines. Chem Heterocycl Comp 57, 560–567 (2021). https://doi.org/10.1007/s10593-021-02943-1
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DOI: https://doi.org/10.1007/s10593-021-02943-1