Photoluminescence studies on C60 trapped in NiY zeolite

Photoluminescence (PL) and photoluminescence excitation (PLE) studies have been performed on C60 confined in NiY zeolite. Besides the PL peaks of Ni ions a new peak at 544 nm was observed, which is believed to originate from the trapped C60 within a NiY molecular sieve. From PLE measurements, the transfer of carriers from Ni ions to their adjacent C60 molecules is deemed to be responsible for the PL and its enhancement, PLE, PL and EPR measurements indicate the coordination of Ni ions on C60 molecules in supercages of NiY zeolite.