Molecular recognition and spectral tuning of organic dyes in water by amide naphthotubes.

Molecular recognition and spectral tuning of 13 organic dyes were achieved in water by amide naphthotubes. The association affinity to a styryl derivative is up to 4.5 × 10 7 M -1 , which is the highest among all the known hosts. In addition, great fluorescence enhancement was observed for styryl derivatives. This would lay a basis for the potential analysis application.