Tsai, Cheng-Che; Chuang, Wei-Tsung; Tsai, Yow-Fu; Li, Jyun-Ting; Wu, Yu-Fa; Liao, Chun-Chen published the artcile< Intra- and intermolecular hydrogen bonds enhance the fluoride-responsiveness of functionalized glycolipid-based gelators>, Application In Synthesis of 617-55-0, the main research area is glycolipid preparation supramol gel assembly hydrogen bond fluoride.
The authors propose a facile approach toward enhancing the efficiency of fluoride-responsive gels through the positioning of functionalized receptor units, allowing tunable intra- and intermol. hydrogen bonding, in the gelator mols. The authors have prepared the new glycolipid-based gelator 2 and its hydroxy and methoxy derivatives 2a and 2b, resp., to study the effects of three types modes of supramol. assembly: solely intermol. hydrogen bonding in 2, solely intramol. hydrogen bonding in 2b, and both inter- and intramol. hydrogen bonding in 2a. 1H NMR spectra confirmed the self-assembly interactions of these glycolipid-based gelators. The authors measured the min. gel concentrations and sol-gel transitions and recorded x-ray diffraction patterns and electron micrographs to characterize the gelation behavior and structural organization of each of these supramol. gels. Among these three gelators, only 2 and 2a could form organogels in the test solvents, indicating that intermol. hydrogen bonding plays a determinant role in the supramol. assemblies leading to gelation. The self-assembly of 2 resulted in a bilayer-packed lamellar structure within ribbon-like fibers, whereas that of 2a resulted in hexagonally packed cylindrical micelles within tree-like fibers. A min. amount of 0.3 equiv of F- was required for complete disruption of the gel formed from 2a, which was approx. four times lower than that required for the gel formed from 2. Thus, the incorporation of a β-hydroxy motif-the only difference in the chem. structures of 2 and 2a-led to interesting variations in the resulting gel morphologies and enhanced the gel’s fluoride-responsiveness.
Journal of Materials Chemistry B: Materials for Biology and Medicine published new progress about Gelation. 617-55-0 belongs to class esters-buliding-blocks, and the molecular formula is C6H10O5, Application In Synthesis of 617-55-0.
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics