CRYSTAL OF 9,9-BIS(6-HYDROXY-2-NAPHTHYL)FLUORENE AND METHOD FOR PRODUCING THE SAME
To provide crystals (polymorphs or crystalline polymorphs) of 9,9-bis(6-hydroxy-2-naphthyl)fluorene, displaying high solubility (or compatibility) in organic compounds, and methods for producing the same.SOLUTION: Prepared are ε crystals of 9,9-bis(6-hydroxy-2-naphthyl)fluorene having, in powder X-r...
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Zusammenfassung: | To provide crystals (polymorphs or crystalline polymorphs) of 9,9-bis(6-hydroxy-2-naphthyl)fluorene, displaying high solubility (or compatibility) in organic compounds, and methods for producing the same.SOLUTION: Prepared are ε crystals of 9,9-bis(6-hydroxy-2-naphthyl)fluorene having, in powder X-ray diffraction patterns, diffraction peaks at following diffraction angles 2θ. The diffraction angles 2θ: 10.1±0.2°, 10.4±0.2°, 12.3±0.2°, 15.1±0.2°and 19.0±0.2°. Alternatively, prepared are ζ crystals of 9,9-bis(6-hydroxy-2-naphthyl)fluorene having, in powder X-ray diffraction patterns, diffraction peaks at following diffraction angles 2θ. The diffraction angles 2θ: 10.7±0.2°, 14.2±0.2°, 18.5±0.2°and 24.1±0.2°.SELECTED DRAWING: None
【課題】有機化合物に対して高い溶解性(または相溶性)を示す9,9-ビス(6-ヒドロキシ-2-ナフチル)フルオレンの結晶(多形体または結晶多形体)およびその製造方法を提供する。【解決手段】粉末X線回折パターンにおいて、以下の回折角度2θに回折ピークを有する9,9-ビス(6-ヒドロキシ-2-ナフチル)フルオレンのε形結晶を調製する。回折角度2θ:10.1±0.2°、10.4±0.2°、12.3±0.2°、15.1±0.2°および19.0±0.2°または、粉末X線回折パターンにおいて、以下の回折角度2θに回折ピークを有する9,9-ビス(6-ヒドロキシ-2-ナフチル)フルオレンのζ形結晶を調製する。回折角度2θ:10.7±0.2°、14.2±0.2°、18.5±0.2°および24.1±0.2°【選択図】なし |
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