Cyclometalated Platinum-Containing Diketopyrrolopyrrole Complexes and Polymers: Photophysics and Photovoltaic Applications
| Autor: | Subhadip Goswami, John M. Papanikolas, Kirk S. Schanze, Melissa K. Gish, Jiliang Wang, Suchismita Guha, John R. Reynolds, Bethy Kim, Amrit Laudari, Jeff L. Hernandez |
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| Rok vydání: | 2017 |
| Předmět: |
chemistry.chemical_classification
Materials science Band gap General Chemical Engineering Auxochrome chemistry.chemical_element 02 engineering and technology General Chemistry Polymer Chromophore 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry 01 natural sciences 0104 chemical sciences chemistry Picosecond Ultrafast laser spectroscopy Materials Chemistry 0210 nano-technology Platinum Spectroscopy |
| Zdroj: | Chemistry of Materials. 29:8449-8461 |
| ISSN: | 1520-5002 0897-4756 |
| Popis: | A series of organometallic complexes and polymers has been synthesized with an objective of studying their fundamental photophysical properties together with their organic photovoltaic and organic field-effect transistor properties. The metal chromophores consist of a diketopyrrolopyrrole (DPP) core, end functionalized with cyclometalated platinum “auxochrome”. The photophysical properties of the metal complex and polymers are compared with the unmetalated chromophore DPP-C8-Th-Py. The polymers Poly-DPP-Th-Pt and Poly-DPP-Ph-Pt differ structurally in their cyclometallating ligands, where they consist of 2-thienylpyridine and 2-phenylpyridine, respectively. Efficient solar spectrum coverage was observed for all chromophores; specifically, the polymer Poly-DPP-Th-Pt has an onset of absorption at ∼900 nm with an optical band gap of 1.4 eV. The triplet excited state was detected for all chromophores and probed by both nanosecond and picosecond transient absorption spectroscopy. Both polymers were employed as ... |
| Databáze: | OpenAIRE |
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