Colorimetric sensing of fluoride ion by new expanded calix[4]pyrrole through anion-π interaction.
Three new expanded calix[4]pyrroles were synthesized, where the two dialkylldipyrromethane units are linked via C-C double bonds. One of them, calix[2]bispyrrolylethene, colorimetrically senses fluoride ion only, owing to anion-π interaction in polar aprotic solvents.
School of Chemistry, University of Hyderabad, Hyderabad, 500 046, India.
Sanjeev P
SP
Mahanta
B Sathish
BS
Kumar
Sambath
S
Baskaran
Chinnappan
C
Sivasankar
Pradeepta K
PK
Panda
D000838:Anions / Q000737:chemistry; D047250:Calixarenes / Q000737:chemistry*; D003124:Colorimetry; D005461:Fluorine / Q000032:analysis* / Q000737:chemistry; D008958:Models, Molecular; D015394:Molecular Structure; D011166:Porphyrins / Q000737:chemistry*
D000838:Anions; D011166:Porphyrins; C469811:calix(4)pyrrole; D047250:Calixarenes; D005461:Fluorine