Dual emission and multi-stimuli-response in iridium(iii ) complexes with aggregation-induced enhanced emission: applications for quantitative CO2 detection
| Autor: | Pere Alemany, Clàudia Climent, Sheik Saleem Pasha, Angshuman Roy Choudhury, Gurpreet Kaur, David Casanova, Inamur Rahaman Laskar, Parvej Alam |
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| Přispěvatelé: | Universitat de Barcelona |
| Rok vydání: | 2017 |
| Předmět: |
Materials science
chemistry.chemical_element Infrared spectroscopy 02 engineering and technology Iridium Ligands 010402 general chemistry Photochemistry 01 natural sciences Aggregation (Chemistry) chemistry.chemical_compound Materials Chemistry Schiff base Intermolecular force General Chemistry 021001 nanoscience & nanotechnology 0104 chemical sciences Lligands Solubility chemistry Iridi Agregació (Química) Intramolecular force Excited state Physical chemistry Solubilitat 0210 nano-technology Phosphorescence Single crystal |
| Zdroj: | Dipòsit Digital de la UB Universidad de Barcelona Recercat. Dipósit de la Recerca de Catalunya instname |
| ISSN: | 2050-7534 2050-7526 |
| Popis: | Four new Ir(III) complexes with the general formula [IrHCl(C^N)(PPh3)2] containing different conjugated Schiff base ligands (C^N) have been synthesized and characterized by 1H, 13C, and 31P NMR, HRMS, and IR spectra and one of them by single crystal X-ray diffraction. Their photophysical properties in solution and in the solid state have been analyzed and three main practical results have been obtained: (i) a dual fluorescent and phosphorescent emissive complex in solution, (ii) successful acid/base sensing in the solid state and (iii) quantitative CO2 detection. Quantum chemical calculations have been employed to assign the character of the lowest excited states. A plausible explanation for the observed aggregation induced enhanced emission (AIEE) is given, based on the restriction of intramolecular motions due to the effect of intermolecular C–H⋯π and C–H⋯Cl type interactions upon aggregation. |
| Databáze: | OpenAIRE |
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