Through billions of years of evolution, living organisms have developed a wide variety of highly sophisticated materials to cope with a number of diverse and complex biological functions. Among these, interaction with light (i.e. absorption, emission, refraction) and ionic and electronic transport properties play a key role in many basic physiological processes. Only recently material scientists have started to develop photonic and electronic devices based on biological and bio-inspired materials. The use of biological materials can take advantage of in vivo production, enabling a combination of materials science and biotechnology which will open ground-breaking scientific and technological directions. In addition, hybrid architectures of artificial components (e.g. semiconducting polymers, quantum dots) with biological structures can be either obtained by self-assembly and chemical synthesis / modification or produced by “living foundries” or bio-factories. Examples of biological and/or bio-inspired materials which reveal intriguing applications in photonics and electronics include: photosynthetic systems, photonic nano-biostructures, biosilica, silk, melanins, DNA, many structural proteins. Living cells have been also explored as active components of electronic devices. The symposium will mainly focus on the materials side, and applications will be covered to complement and illustrate the underpinning chemical and physical aspects. These will include: (bio)synthesis, chemical or biological modifications of the materials, generation of new bio-hybrid systems, extraction, processing and assembly, ultimately unraveling the physical properties of complex chemical and biological systems. The symposium proposed aims especially to bridge the gap between the fundamental understanding of physical mechanisms coupled with biological and bio-inspired materials and devices applications, emphasizing the key role of chemical and physical aspects related to the molecular and supramolecular architectures of complex biological systems.