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Updated: Sep 25, 2025

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
Published on: March 24, 2018
Synthesis of 9,9-bis(4-hydroxyphenyl) fluorene catalyzed by bifunctional ionic liquids
Jialun Wei1, Limei Yu2,1, Lei Yan1
1School of Chemical Engineering, Dalian University of Technology Dalian Liaoning 116024 China.
Abstract:
Through structural design, a series of bifunctional ionic liquids (BFILs) containing sulfonic acid (-SO3H) and sulfhydryl groups (-SH) were synthesized and characterized by NMR and MS. The acidity of these BFILs was measured by the Hammett acidity (H 0) and the effective sulfhydryl molar content of BFILs was determined by Ellman's method. Moreover, BFIL's catalytic properties in the condensation reaction of 9-fluorenone and phenol were studied. BFIL catalyst 6c can achieve nearly 100% conversion of 9-fluorenone with a high selectivity of 9,9-bis(4-hydroxyphenyl) fluorene (95.2%).
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