A benzthiazole-based simple receptor in fluorescence sensing of biotin ester and urea

A simple 1,10-phenanthroline-based fluorescent receptor in solution and 1,10-phenanthroline in solid state for urea recognition

“…A neutral molecular sensor would thus be of advantage to determine urea in a non-degradative way, whereas in potentiometric and colorimetric methods, urea is decomposed into CO 2 and NH 3 or NH þ 4 in a degradative way [7]. Various research groups have addressed the recognition of urea [8][9][10] and urea derivatives [11][12][13] using designed synthetic receptors. Crown ether-based receptors developed by Pedersen [14] and the carboxylic acid containing macrocyclic receptor by Reinhoudt [15,16] are known to bind urea.…”

Study on changes in optical properties of phenylbenzothiazole derivatives on metal ion binding

“…The optical properties of analogous derivatives of benzothiazole are relatively less explored, which leaves scope for further study [8][9][10][11][12][13]. Among them, the hydroxybenzothiazoles are of special interest as presence of OH-group along with a ring containing nitrogen and sulphur atoms at two side of the heterocyclic ring can control coordination modes in a tuneable manner.…”