Triplet–triplet energy transfer in artificial and natural photosynthetic antennas

• DOI: 10.1073/pnas.1614857114
• Publication Date: 2017-06-27T00:40:30Z
• Authors: Junming Ho; Elizabeth Kish; Dalvin D. Méndez-...; Katherine WongCarter; Smitha Pillai; Gerdenis Kodis; Jens Niklas; Oleg G. Poluektov; Devens Gust; Thomas A. Moore; Ana L. Moore; Victor S. Batista; Bruno Robert
• Keywords: Anoxygenic photosynthesis

Significance Rapid chlorophyll-to-carotenoid triplet–triplet energy transfer (T-TET) in photosynthetic organisms is crucial to photoprotection from singlet oxygen. Photosynthesis reengineered for increased efficiency will result oxygen levels the cells, and need ensure adequately rapid T-TET arise. Using a combination of theoretical experimental studies on artificial natural carotenoid–chlorophyll complexes, we have identified spectroscopic markers indicative specific pigment–pigment interactions promoting fast T-TET. These comprise essential design principles necessary photosynthesis. Antenna systems anoxygenic suitably could be used gather solar near infrared, which would markedly increase by better matching spectrum water oxidation CO 2 reduction.