Assembly-Induced Bright-Light Emission from Solution-Processed Platinum(II) Inorganic Polymers
| Autor: | Nathan J. Cheetham, Begoña Milián-Medina, Johannes Gierschner, Stephan Busato, Mariano Campoy-Quiles, Raffaele Mezzenga, Antoni Sánchez-Ferrer, Aleksandr Perevedentsev, Ahmad Sousaraei, Reinhold Wannemacher, Juan Cabanillas-Gonzalez, Fabio L. Bargardi, Walter Caseri |
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| Přispěvatelé: | Ministerio de Economía y Competitividad (España), European Research Council, Campus de Excelencia Internacional UAM+CSIC |
| Rok vydání: | 2019 |
| Předmět: |
Photoluminescence
Materials science General Chemical Engineering Inorganic chemistry chemistry.chemical_element Salt (chemistry) 02 engineering and technology Crystal structure 010402 general chemistry 7. Clean energy 01 natural sciences 12. Responsible consumption lcsh:Chemistry chemistry.chemical_compound Magnus' green salt chemistry.chemical_classification Crystal-structures General Chemistry Polymer 021001 nanoscience & nanotechnology 3. Good health 0104 chemical sciences Characterization (materials science) lcsh:QD1-999 Optoelectronic properties chemistry Magnus green salt 0210 nano-technology Platinum Bright light |
| Zdroj: | ACS Omega ACS Omega, 4 (6) Repositorio Institucional del Instituto Madrileño de Estudios Avanzados en Nanociencia instname Digital.CSIC. Repositorio Institucional del CSIC ACS Omega, Vol 4, Iss 6, Pp 10192-10204 (2019) |
| ISSN: | 2470-1343 |
| DOI: | 10.3929/ethz-b-000349227 |
| Popis: | Synthesis, processing, and characterization are reported for a series of tetracyanoplatinate Magnus' salt (TCN-MS) derivatives-soluble derivatives of the generally intractable Magnus' green salt-that feature the general structure [Pt(NH2R)(4)] [Pt(CN)(4)] where R is a branched alkyl group or a w-phenylalkyl group. In solutions, these coordination compounds generally dissolve on the level of individual ion pairs as shown by X-ray diffraction analysis. To enable the formation of quasi-one-dimensional linear stacks of Pt(II) atoms in thin films, the matrix-assisted assembly is employed, whereby the compounds are codissolved with poly(ethylene oxide) (PEO), followed by film casting, thermally activated assembly, and eventual removal of PEO. Remarkably, assembled TCN-MS inorganic polymers exhibit bright blue-green photoluminescence. A detailed investigation of the assembly process and simultaneously modified solid-state optical properties is performed using a range of microscopy, optical and vibrational spectroscopy, and thermal analysis techniques. Given their unusual combination of optical properties, namely, transparency in the visible region, high photoluminescence quantum efficiencies (up to 13% in first-demonstration samples), and large Stokes shifts (up to 1 eV), TCN-MS derivatives are proposed as a promising class of light-emitting materials for emerging applications in molecular optoelectronics, the potential and challenges of which are discussed. The work in Barcelona was financially supported by the Ministerio de Economía y Competitividad of Spain through the Severo Ochoa Programme for Centres of Excellence in R&D (SEV-2015-0496) and project MAT2015-70850-P and the European Research Council (ERC) under grant agreement no. 648901. The work in Madrid and Valencia was supported by the Spanish Ministerio de Economía y Competitividad (MINECO-FEDER project CTQ2017-87054); the work in Madrid was further supported by the Severo Ochoa Programme for Centers of Excellence in R&D program of the MINECO (SEV-2016-0686) and by the Campus of International Excellence (CEI) UAM + CSIC. |
| Databáze: | OpenAIRE |
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