Optical Anion Receptors with Urea/Thiourea Subunits on a TentaGel Support
Bruno Zavala-Contreras1, Hisila Santacruz-Ortega1, Angel Ulises Orozco-Valencia1
1Departamento de Investigación en Polímeros y Materiales, Universidad de Sonora, Blvd. Luis Encinas y Calle Rosales S/N, Hermosillo 83000, Sonora, Mexico.
Abstract:
Two simple chemosensors with urea (L1) and thiourea (L2) groups were synthesized and studied by different spectroscopic techniques. Both receptors can sense acetate (Ac-), dihydrogen phosphate (H2PO4 -), and fluoride (F-) anions, accompanied by changes in UV-vis and 1H NMR spectra, and an optical response is observed as a color change of the solutions due to deprotonation and hydrogen-bonding processes. Also, L1 and L2 were supported on TentaGel resins (R1 and R2), and their fluoride-sensing properties in DMSO and water solutions were studied. Interestingly, R2 can sense fluoride ions in sample solutions of 100% water.
Related Concept Videos
G-Protein Gated Ion Channels
Sensory...
Pore Transport and Ion-Pair Transport
Pore transport, also known as convective transport, is a process where small molecules like urea, water, and sugars rapidly cross cell membranes as though there were channels or pores in the membrane. Although direct microscopic evidence is limited but the concept of pores or channels is widely accepted based on physiological evidence. Despite the lack of direct...
Urea Cycle
Structure of Amines
Ligand-Gated Ion Channel Receptor: Gating Mechanism
Transducer Mechanism: Enzyme-Linked Receptors
Major types that are helpful drug targets include:


