Ordu, Öznur Demir2023-11-222023-11-222023Demir-Ordu, Ö. (2023). Synthesis and organogelation properties of bis-carbamate compounds bearing spacers with a stereogenic center. Journal of Sol-Gel Science and Technology, 105(1), 291-303.0928-07071573-4846http://dx.doi.org/10.1007/s10971-022-05970-2https://hdl.handle.net/20.500.12491/11872This work was supported by TUBITAK (The Scientific and Technological Research Council of Turkey, 119Z579) and Bolu Abant zzet Baysal University research fund (BAP) with project numbers 2013.03.03.601 and 2017.03.03.1136. I thank Gizem Akay, Anton Paar Turkey for rheology measurements.A series of bis-carbamates with a stereogenic center were prepared as low-molecular-weight organic gelators. The gelating propensity of racemates and pure enantiomers was examined in a range of organic solvents to explore the effects of chirality and the para-alkyl chain length on self-assembly. It was found that the gelation abilities in vegetable oils and esters were mainly affected by the para-alkyl chain length and the number of carbons in the spacer between the carbamate groups. In addition, molecular chirality was found to have a significant effect on the gelation properties of bis-carbamate derivatives with three-carbon spacer. Furthermore, morphology of the bis-carbamate gels was investigated by optical microscopy and scanning electron microscopy. Birefringent helix-like structures between birefringent spherulites were observed by polarized optical microscopy in the gel structures of chiral bis-carbamate derivatives with three-carbon spacer. The bulk properties of the gels were evaluated through rheological studies. The results can be used for developing novel chiral gels and relevant applications such as enantiomeric separation. [GRAPHICS] .eninfo:eu-repo/semantics/closedAccessBis-CarbamateRacemate Versus Pure Enantiomer GelationBirefringent SpheruliteDrug-DeliveryEfficient OrganogelatorsFunctional MaterialsArticle10.1007/s10971-022-05970-210512913032-s2.0-85141438250Q2WOS:000878934300002Q1