Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 137, Issue 22, Pages 7043-7046Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.5b03618
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Funding
- [24000009]
- [25708008]
- Grants-in-Aid for Scientific Research [24000009, 15K13665, 25708008] Funding Source: KAKEN
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Phthalein dyes in the quinone dianion form (pseudo-D-3, 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 similar to 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.
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