Copolymers of N-dodecylacrylamide (DDA), which form LB multilayers, and N-vinylcarbazole (Cz) with various copolymer compositions were prepared to investigate the photophysical behavior of the carbazole chromophore in a monolayer and LB multilayers. In LB multilayers, the emission spectra changed with the number of layers deposited. The excimer emission increases in the LB multilayers of a Y-type LB structure which have a head-to-head arrangement, due to effective energy migration between Ct chromophores. Inter- and intralayer energy transfer in the LB multilayers is suggested by the increase in the excimer emission up to the deposition of six layers. The emission decay profiles in the LB films (monolayer and multilayers) containing only a few percent of Cz are nearly single exponential. More importantly no rapid decay in an initial stage is observed, which is often found for dyes incorporated into conventional LB layers when aggregates are formed, The analysis supports that the Ct chromophores in the copolymer LB films are dispersed more or less uniformly.