Polymorphic Equilibrium Responsive Thermal and Mechanical Stimuli in Light-emitting Crystals of N‑Methylaminonaphthyridine

Polymorphic Equilibrium Responsive Thermal and Mechanical Stimuli in Light-emitting Crystals of N‑Methylaminonaphthyridine

Crystal polymorphs of 1,8-naphthyridine derivative, being anti and syn conformers, show a reversible transformation from anti to syn by heating and from syn to anti by grinding with the alteration of emittance intensity, and notably, thermal transformation from anti to syn conformer took place in si...

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Veröffentlicht in:Organic letters 2012-12, Vol.14 (24), p.6282-6285
Hauptverfasser: Harada, Naomi, Abe, Yuichiro, Karasawa, Satoru, Koga, Noboru
Format: Artikel
Sprache:eng
Schlagworte:
Crystallization
Crystallography, X-Ray
Molecular Conformation
Naphthyridines - chemistry
Spectrometry, Fluorescence
Stereoisomerism
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Zusammenfassung:Crystal polymorphs of 1,8-naphthyridine derivative, being anti and syn conformers, show a reversible transformation from anti to syn by heating and from syn to anti by grinding with the alteration of emittance intensity, and notably, thermal transformation from anti to syn conformer took place in single-crystal-to-single-crystal (SC-to-SC) form, which was confirmed by a single crystal X-ray crystallography.
ISSN:1523-7060
1523-7052
DOI:10.1021/ol302963e