The invention 2-[(1,3- -2,3- -1H- [ ] -6 ) ] Derivatives thereof , it relates to a method for manufacturing and use , and more particularly having the property that the intensity of the fluorescence increase in a wide range as the amount of water present in a variety of organic solvents increased 2-[(1,3- -2,3- -1H- [ ] -6 ) ] Derivatives , to a method of manufacturing the same and use. ; 展开▼