Highly Sensitive and Selective Fluoride Ion Chemosensing, Fluoroalkylated Polysilane

✍ Scribed by Anubhav Saxena; Michiya Fujiki; Roopali Rai; Sun-Young Kim; Giseop Kwak

• Publisher: John Wiley and Sons
• Year: 2004
• Tongue: English
• Weight: 131 KB
• Volume: 25
• Category: Article
• ISSN: 1022-1336
• DOI: 10.1002/marc.200400347

✦ Synopsis

Abstract

Summary: This paper reports a new and simple approach for the amplified detection of fluoride ions by a polymer‐based chemosensor made of stiff fluoroalkylated polysilane, poly(3,3,3‐trifluoropropylmethylsilane). This chemosensor exhibited extreme sensitivity and selectivity towards fluoride ions by a decrease in the photoluminescence (PL) intensity with parts per billion concentrations of fluoride ions in solution in tetrahydrofuran (THF). The quenching constant for fluoride ions (K = 1.35 × 10^7^ M^−1^) was found to be exceptionally high.

Schematic representation of the polymer amplification mechanism after addition of fluoride ion in tetrahydrofuran.

imageSchematic representation of the polymer amplification mechanism after addition of fluoride ion in tetrahydrofuran.