The Gordon Research Conference on Electron Donor Acceptor Interactions (GRC EDAI) represents the current frontiers in experimental and theoretical studies of Electron Transfer Processes in Materials and Biological Systems. While many of the fundamental concepts of electron transfer and charge transport phenomena have been developed at the macroscopic level, recent developments at the molecular level focus on the role of interfaces in device architectures, interfaces at heterogeneous catalyst surfaces, spectroscopic techniques for analyte detection and imaging, spectroscopic characterization of order/disorder parameters in organic and inorganic donor-acceptor systems, photoinduced and thermal electron transfer processes in biomolecules relevant to bioelectronics, and energy conversion processes. The GRC EDAI is one of the major international meetings advancing this field, and is one of the few scientific meetings where fundamental research in electron transfer processes is discussed. The program includes sessions on coupled electron transfers, molecular solar energy conversion, biological and biomimetic systems, spin effects, ultrafast reactions and technical frontiers as well as electron transport in single molecules and devices. In addition to disseminating the latest advances in the field of electron transfer processes, the conference is an excellent forum for scientists from different disciplines to meet and initiate new directions; for scientists from different countries to make contacts; for young scientists to network and establish personal contacts with other young scientists and with established scientists who, otherwise, might not have the time to meet young people. The EDAI GRC also features an interactive atmosphere with lively poster sessions, a few of which are selected for oral presentations.