Cavity-Directed Chromism of Phthalein Dyes,Journal of the American Chemical Society

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Cavity-Directed Chromism of Phthalein Dyes
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2015-06-01 , DOI: 10.1021/jacs.5b03618
Hiroki Takezawa ₁ , Shouta Akiba ₁ , Takashi Murase ₂ , Makoto Fujita ₁

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Phthalein dyes in the quinone dianion form (pseudo-D3, colored) are transformed into the lactone dianion form (pseudo-T(d), colorless) through encapsulation in a T(d)-symmetric host even under basic conditions (pH ∼10). The compatibility in size and symmetry between the lactone and the cavity is essential to the transformation. Upon addition of a guest that strongly binds to the cavity, the encapsulated phenolphthalein is expelled, the color of the basic solution is regained, and the host-guest complexation is thus visualized.

中文翻译：

酞菁染料的空腔定向变色

即使在碱性条件下（pH ～10），醌二价阴离子形式（伪 D3，有色）的酞菁染料也可以通过封装在 T（d）对称宿主中转化为内酯二价阴离子形式（伪 T（d），无色））。内酯和空腔之间尺寸和对称性的相容性对于转化至关重要。在加入与空腔强结合的客体后，封装的酚酞被排出，碱性溶液的颜色恢复，从而使主客体络合可视化。

更新日期：2015-06-01

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