We have developed a theoretical description of energy-transfer between chromophores in various geometries which correspond to actual configurations of polymers in a variety of materials. These include micelles with chromophores in the core or in the corona, such as one might obtain with a diblock copolymer in which chromophores are incorporated in one block, micelles with chromophores at the surface or at the interface between blocks, lamellae, and balls. The distribution of chromophores in this model can be random or described by a variety of functions to investigate situations such as the packing of diblocks at the interface between two homopolymeric phases and the expansion, contraction, or redistribution of micelle coronae which often accompanies changes in solvent characteristics. The calculated quantity, G(S)(t), is the probability of finding an initially excited chromophore still in the excited state at time t, and is directly related to fluorescence depolarization. The behavior of G(S)(t) in the cases of chromophores randomly distributed in an infinite plane and on a sphere is compared with analytical expressions in closed form for G(S)(t) in those configurations; in the case of a ball, G(S)(t) is compared with a previously reported expression(4) for energy-transfer in that geometry, and exact agreement is obtained. The sensitivity of this method is explored by examining G(S)(t) as a function of the shape and volume of the chromophore distribution.