Abstract
A new gelator (L) containing Schiff base, benzoimidazol and naphthayl moieties was synthesized and its self-assembly was investigated in various solvents. Gelation test revealed that it could form a thermal-responsive gel in ethylene glycol (GL) or the mixture solution of ethylene glycol and DMF. Different fluorescence behaviors were observed upon adding different metal ions. The addition of Mg2+ maintained the gelating ability of L, meanwhile the Mg2+-ion-mediated organogel in ethylene glycol can enhance the fluorescence of GL. The addition of Al3+ can destroy GL and lead to a state transition from gel to clear solution; the solution can give a brilliant blue emission excited at 365nm UV. Interestingly, the luminescence of GL increased sharply at first but decreased finally. The fluorescence of GL was quenched when other metal cations were added.
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