Visible responses under high pressure in crystals: phenolphthalein and its analogues with adjustable ring-opening threshold pressures. Issue 32 (1st April 2019)

• Record Type: Journal Article
• Authors: Deng, Xinyuan; Guo, Hongwei; Meng, Xiao; Wang, Kai; Zou, Bo; Ma, Yuguo
• Is Part Of: Chemical communications. Volume 55:Issue 32(2019)
• Page Start: 4663
• Page End: 4666
• Publication Date: 2019-04-01
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/c9cc01145e
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : Visible mechanochromism was triggered via the ring-opening reaction of phenolphthalein under high pressure. Different ring-opening threshold pressures and responsive colors were achieved by changing the substituent groups with different electronic effects. Abstract : The ring-opening reaction of phenolphthalein (PP ) crystals under hydrostatic pressure provided by using a diamond anvil cell (DAC) is described in this paper for the first time. The color of the crystals changed into red from colorless visibly. The ring-opening threshold pressures could be adjusted by changing the substituent groups. Mechanochromic responses under hydrostatic pressure could also be achieved in polymer blends, which contributes to their practical applications.