Self-assembled sonogels formed from 1, 4-naphthalenedicarbonyldinicotinic acid hydrazide. Issue 31 (14th July 2022)

• Record Type: Journal Article
• Authors: Liao, Lieqiang; Liu, Ruidong; Hu, Shuwen; Jiang, Wenting; Chen, Yali; Zhong, Jinlian; Jia, Xinjian; Liu, Huijin; Luo, Xuzhong
• Is Part Of: RSC advances. Volume 12:Issue 31(2022)
• Page Start: 20218
• Page End: 20226
• Publication Date: 2022-07-14
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/d2ra01391f
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Ultrasound-induced gelation of a novel type of gelator, 1, 4-naphthalenedicarbonyl- dinicotinic acid hydrazide, is reported. The gelator self-assembled into various architectures in different solvents. Abstract : In this paper, we report self-assembled sonogels formed from 1, 4-naphthalenedicarbonyldinicotinic acid hydrazide (NDC-NN3) in some liquids including ethanol, tetrahydrofuran (THF), 1, 4-dioxane, n -propanol, n -butanol and n -pentanol. When the clear solution of NDC-NN3 in the selected liquids mentioned above at a suitable concentration was irradiated with ultrasound waves at room temperature, a sonogel was formed. Upon heating, the sonogel dissolved gradually and finally became a clear solution again. Upon cooling the hot solution to room temperature, the solution state did not change even after standing for a few days. Nevertheless, if the solution underwent sonication for a certain time, a stable gel was obtained again. The critical gelation concentrations (CGCs) of NDC-NN3 in ethanol, THF, 1, 4-dioxane, n -propanol, n -butanol and n -pentanol are 10, 8, 6, 8, 6 and 8 mg mL −1, respectively. The obtained sonogels display excellent mechanical properties. The crystal structure of NDC-NN3 suggests that the naphthalene ring, hydrazide group and the position of N in the pyridine ring mediate the self-assembly process. Upon sonication, the formation of suitable π–π stacking and intermolecular hydrogen bonding drives the gelator molecules to self-assemble into fibers, spheres and micro-burdock-shaped balls in various solvents, which ultimately confine the liquids.