Çolak, Mehmet2023-03-072023-03-072022Çolak, M. (2022). Glutamic acid-based novel effective phase-selective organogelators for fuel pollution control. Journal of Materials Science, 57(2), 1044-1057.0022-24611573-4803https://link.springer.com/article/10.1007/s10853-021-06714-3https://hdl.handle.net/11468/11318In this study, an efficient glutamic acid-based cyclic (Glu-Glu) phase-selective organogelator diketopiperazine has been synthesized by a one-step reaction between L-glutamic acid and long-chain amines in a regioselective manner with high yields of up to 90%. Within 15 min, DKP organogelators gelled in a wide range of oils with a minimum gelation concentration ranging from 0.5 to 1.8% w/v. Among these amphiphilic gelators, dioctyl diketopiperazine dione (O-DKP) especially demonstrated the formation capability of a self-assembled fibrillar network with diesel, dodecane and sunflower oil, at MGCs of 0.5, 1.0 and 1.2% w/v or less, in the presence of water/fuel mixtures. The O-DKP-diesel gel which was formed by the water-diesel mixture was easily separated from the water, and then the O-DKP gelator was recovered by its easy extraction with petroleum benzine. The extracted O-DKP gelator was shown to be reusable for fuel remediation. The large scale of phase-selective oil spill recovery was also accomplished with a large volume of solvents.eninfo:eu-repo/semantics/closedAccessRoom-temperature gelationCrude-oilGelatorsSolidifiersGelsArticle57210441057WOS:0007377501000782-s2.0-8512220916410.1007/s10853-021-06714-3Q1Q2