| 초록 |
The development of tunable organic fluorophores has recently met with increasing interest because of their many applications in analytical and material sciences. There have been only a few reports about convenient methods of tuning fluorescence emission properties in the solid-state, while many approaches have been focused on those in solution. Here we report on a tunable solid-state fluorescence system consisted of organic salts of anthracene disulfonic acid (ADS) with primary alkyl amines. The organic salts were prepared by mixing ADS and the amine in methanol with a 1: 2 molar ratio and then by evaporation. The salts were purified by recrystallization from solvents such as methanol and THF. The resulting crystals yielded various anthracene arrangements depending on the difference of aliphatic amines. Photophysical properties of the crystals, such as emission spectra, emission quantum efficiencies and life time, are modulated by arrangement of anthracene moieties. |
