Structurally different oxacalix[4]crowns have been synthesized and their host-guest complexation with secondary ammonium salt,paraquat and polycyclic aromatic h
Pyrene is a compact polycyclic aromatic hydrocarbon which has been widely exploited for its increasing performance in electronic and photophysical properties.
It was realized that the biological behavior of a photosensitizer is greatly determined by its structural characteristics.On the other hand,the efficiency of ph