Interlayer energy transfer between pyrene-dodecanoic acid and NBD-dodecanoic acid in Langmuir-Blodgett films (original) (raw)

Journal of Luminescence, 1997

Abstract

ABSTRACT The interlayer excitation energy transfer between 12-(1-pyrenyl)dodecanoic acid (PDA), 12-[N-(7-nitrobenz-2-oxa-1,3-diazol-4-y1)-N-methylamino] dodecanoic acid (NBDDA) in LB films has been examined with picosecond time-resolved fluorescence decay measurements. Four fluorescing species are present in PDA LB films: monomer (M), dimer (D) and two types of excimers (E1 and E2). The fluorescence of PDA monomers and excimers E2 is quenched by energy transfer to NBDDA. The critical transfer distances of 40.5 and 40.3 Å for monomers and excimers respectively were calculated.

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