A benzthiazole-based simple receptor in fluorescence sensing of biotin ester and urea
摘要:
A benzthiazole-based receptor 1 has been designed and synthesized for recognition of biotin ester and urea in CHCl3 containing 1% CH3CN. The receptor binds biotin methyl ester and urea with moderate binding constant values and shows significant increase in emission of benzthiazole motif The emission characteristics of 1 upon complexation clearly distinguishes biotin methyl ester and urea from thiourea and N,N'-dimethylurea. Characterization and sensing properties of the receptor 1 were evaluated by H-1 NMR, UV-vis, and fluorescence spectroscopic methods. (C) 2009 Elsevier Ltd. All rights reserved.
A benzthiazole-based simple receptor in fluorescence sensing of biotin ester and urea
摘要:
A benzthiazole-based receptor 1 has been designed and synthesized for recognition of biotin ester and urea in CHCl3 containing 1% CH3CN. The receptor binds biotin methyl ester and urea with moderate binding constant values and shows significant increase in emission of benzthiazole motif The emission characteristics of 1 upon complexation clearly distinguishes biotin methyl ester and urea from thiourea and N,N'-dimethylurea. Characterization and sensing properties of the receptor 1 were evaluated by H-1 NMR, UV-vis, and fluorescence spectroscopic methods. (C) 2009 Elsevier Ltd. All rights reserved.
Dithia[3.3]metacyclophanes with a urea unit having long alkyl chains have been prepared. It has been found out that some of them give stable organogels in some solvents, and their gelating ability ...