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  • Thiourea derived Tröger's bases as molecular cleft receptors and colorimetric sensors for anions.

Thiourea derived Tröger's bases as molecular cleft receptors and colorimetric sensors for anions.

The Journal of organic chemistry (2013-08-01)
Elaine M Boyle, Steve Comby, Jennifer K Molloy, Thorfinnur Gunnlaugsson
ABSTRACT

Thiourea-functionalized Tröger's base receptors 1 and 2 have been synthesized and evaluated as novel for the recognition of anions. Receptor 2 gave rise to significant changes in the absorption spectrum upon titration with AcO(-) and H2PO4(-) and acted as a colorimetric sensor for F(-), the interaction of which was also evaluated using (1)H NMR spectroscopy.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Thiourea, ACS reagent, ≥99.0%
Sigma-Aldrich
Thiourea, ReagentPlus®, ≥99.0%
Sigma-Aldrich
Thiourea, JIS special grade, ≥98.0%