Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.



Diaminomalenonitrile Functionalized Gelators in F-/CN- Sensing, Phase-Selective Gelation, Oil Spill Recovery and Dye Removal from Water

Abstract

Diaminomalenonitrile-based gelators 1 and 2 describing the linking of diaminomalenonitrile as H-bonding site with the cholesterol unit via aromatic linker (naphthalene/benzene) have been synthesized. They form gels from various organic and aq. organic solvents. Aggregation of the gelators occurs due to function of several weak forces (e.g., hydrophobic interaction, H-bonding and π-stacking interactions) in solution. Compound 1 is a superior gelator over 2, capable of forming gels from 15 out of the 20 solvents tested. The gelators show multiple applications. Toluene and 1,2-dichlorobenzene gels of 1 and 2, respectively sense F- and CN- anions by showing gel-to-sol transformation. These ions are distinguished with the aid of Fe3+. In the designs, change in linker group (naphthalene/benzene) influences the gelation behaviors and gel properties (mgc, thermal stability, morphology and mechanical behavior etc.) of the gelators. Naphthyl analogue 1 exhibits self-healing behavior in contrast to the benzene analogue 2. Both 1 and 2 show phase-selective gelation (PSG) from biphasic mixtures of water and hydrocarbons/oils. Toluene gel of 1 serves as excellent injectable material and has been applied in environmental remediation (e.g., oil spill recovery and removal of water soluble toxic dyes).

Back to tab navigation

Supplementary files

Article information


Submitted
21 Apr 2020
Accepted
19 May 2020
First published
20 May 2020

New J. Chem., 2020, Accepted Manuscript
Article type
Paper

Diaminomalenonitrile Functionalized Gelators in F-/CN- Sensing, Phase-Selective Gelation, Oil Spill Recovery and Dye Removal from Water

R. Raza , A. Panja and K. Ghosh, New J. Chem., 2020, Accepted Manuscript , DOI: 10.1039/D0NJ01992E

Social activity

Search articles by author

Spotlight

Advertisements