Abstract: Photoactive compounds are disclosed. The disclosed photoactive compounds include metal complexes with dipyrromethene-based ligands, which can be substituted with a variety of different side chains or groups or can include various fused ring configurations, such as including aromatic or heteroaromatic groups. The metal complexes may include two dipyrromethene-based ligands, which can be the same or different. The photoactive compounds can be used as photoactive materials in organic photovoltaic devices, such as visibly transparent or opaque photovoltaic devices.

Abstract: A battery pack for batteries of the type having male and female snap connectors mounted at the opposite ends thereof includes at least two printed circuit boards having male and female snap connectors mounted thereon to receive the snap connectors of the batteries. The snap connectors mounted on the circuit boards are positioned to mechanically engage and electrically contact the snap connectors on the batteries while accommodating limited relative movement of the batteries with respect to the circuit boards, whereby the batteries are floatingly supported. The snap connectors on the circuit boards are electrically interconnected and are electrically connected to terminals for the battery pack by printed circuit layers formed on the circuit boards.