Alene Dagninet Yeshiwas, Arumugaperumal Reguram, Shellaiah Muthaiah, Sun Kien Wen, Chung Wen-Sheng
Department of Applied Chemistry, National Chiao Tung University, Hsinchu 30010, Taiwan.
Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan.
Org Lett. 2021 Apr 2;23(7):2772-2776. doi: 10.1021/acs.orglett.1c00672. Epub 2021 Mar 22.
A newly designed stiff-stilbene functionalized biscalix[4]arene in its form - could be near-quantitatively photoswitched to the -isomer - under irradiation of 385 nm UV light. The -biscalix[4]arene - 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 - configurational isomerism of biscalix[4]arene resulted in distinct self-assembly modes, leading to interesting microscopic morphological changes from honeycomb and ringlike structures to rodlike dense fibrous networks.
一种新设计的刚性芪官能化双杯[4]芳烃的 形式在385 nm紫外光照射下可近乎定量地光开关转变为 -异构体。发现 -双杯[4]芳烃在非极性有机溶剂（如环己烷、己烷、戊烷和乙醚）中是一种超级凝胶剂，临界凝胶浓度分别低至0.2%、0.5%、0.5%和0.4%（w/v）。双杯[4]芳烃的 -构型异构导致了不同的自组装模式，从而引起了从蜂窝状和环状结构到棒状致密纤维网络的有趣微观形态变化。
