Stiff-Stilbene-Bridged Biscalix[4]arene as a Highly Light-Responsive Supramolecular Gelator

Dagninet Yeshiwas Alene, Reguram Arumugaperumal, Muthaiah Shellaiah, Kien Wen Sun, Wen Sheng Chung*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


A newly designed stiff-stilbene functionalized biscalix[4]arene in its cis form Z-1 could be near-quantitatively photoswitched to the trans-isomer E-1 under irradiation of 385 nm UV light. The trans-biscalix[4]arene E-1 was found to be a supergelator in nonpolar organic solvents, e.g., cyclohexane, hexane, pentane, and ether, with critical gelation concentrations as low as 0.2, 0.5, 0.5, and 0.4% w/v, respectively. The cis-trans configurational isomerism of biscalix[4]arene 1 resulted in distinct self-assembly modes, leading to interesting microscopic morphological changes from honeycomb and ringlike structures to rodlike dense fibrous networks.

Original languageEnglish
Pages (from-to)2772-2776
Number of pages5
JournalOrganic Letters
Issue number7
StatePublished - 2 Apr 2021


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