Photoluminescence studies on C-60 trapped in NiY zeolite

Photoluminescence (PL) and photoluminescence excitation (PLE) studies have been performed on C-60 confined in NiY zeolite. Besides the Pt, peaks of Ni ions a new peak at 544 nm was observed, which is believed to originate from the trapped C-60 within a NiY molecular sieve. From PLE measurements, the transfer of carriers from Ni ions to their adjacent C-60 molecules is deemed to be responsible for the PL and its enhancement. PLE, PL and EPR measurements indicate the coordination of Ni ions on C-60 molecules in supercages of NiY zeolite. (C) 1997 Elsevier Science B.V