WFRF:(Sengul Abdurrahman)
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- Buyukeksi, Sebile IsikZonguldak Bülent Ecevit University (author)
Electron/energy transfer studies on hybrid materials based on dinuclear coordination compounds of twisted perylene diimide
- Article/chapterEnglish2019
Publisher, publication year, extent ...
- Elsevier BV,2019
Numbers
- LIBRIS-ID:oai:research.chalmers.se:5919b544-5536-4e73-a425-a38d6422e28e
- https://research.chalmers.se/publication/508728URI
- https://doi.org/10.1016/j.jphotochem.2018.12.019DOI
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- Language:English
- Summary in:English
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- SwePubSwePub
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Notes
- To understand the influence of transition metal ion coordination on the properties and performance of the triads, the symmetric bridging ligand, 1,10-phenanthroline-perylene diimide-1,10-phenanthroline, 1,10-Phen-PDI-1,10-Phen (1) comprising four electron-donating 4-methoxyphenoxy bulky groups at bay-positions and its corresponding square-planar coordination compounds with dichloroplatinum(II), [{PtCl2}(2)-1] (2) and palladium(II) [{PdCl2}(2)-1] (3) were prepared in order to tune the photochemical and optical properties of these hybrid materials. These triads show strong electronic absorption bands attributed to the PDI and M(II)(1,10-Phen)Cl-2 moieties in DMSO. UV-vis absorption spectra of the compounds were calculated using Time-Dependent Density Functional Theory (TDDFT) for the ground state optimized structures in DCM. Current results indicate that 2 has the lowest HOMO-LUMO gap (2.29 eV in DCM) among the investigated molecules. The energy and charge transfer processes with tailoring molecular structures are one of the important strategies for the design of future functional triads based on donor and acceptor moieties for hybrids optoelectronic devices. Thus, we studied linear absorption, fluorescence, and ultrafast transient absorption spectra measurements for the triads in DCM to investigate the impact of different functionalization strategies on the optical characteristics, photo-stability, and photo-induced charge-transfer (CT) processes. The observed ultrafast intramolecular charge transfer from donor units to acceptor part of 1-3 is related to fluorescence quenching and faster singlet state decay on transient absorption measurements. The intramolecular charge transfer mechanism was also compared with the unsymmetrical counterparts that were investigated previously. Symmetrical compounds exhibit faster charge transfer in comparison with the unsymmetrical compounds.
Subject headings and genre
- NATURVETENSKAP Kemi Oorganisk kemi hsv//swe
- NATURAL SCIENCES Chemical Sciences Inorganic Chemistry hsv//eng
- NATURVETENSKAP Kemi Teoretisk kemi hsv//swe
- NATURAL SCIENCES Chemical Sciences Theoretical Chemistry hsv//eng
- NATURVETENSKAP Fysik Den kondenserade materiens fysik hsv//swe
- NATURAL SCIENCES Physical Sciences Condensed Matter Physics hsv//eng
- Coordination compounds
- Perylene diimide
- Hybrid materials
- Density functional theory
- Ultrafast pump-probe
Added entries (persons, corporate bodies, meetings, titles ...)
- Karatay, AhmetAnkara Universitesi (author)
- Acar, NurselEge Universitesi,Ege University (author)
- Kücüköz, Betül,1988Chalmers tekniska högskola,Chalmers University of Technology,Ankara Universitesi(Swepub:cth)kucukoz (author)
- Elmali, AyhanAnkara Universitesi (author)
- Sengul, AbdurrahmanZonguldak Bülent Ecevit University (author)
- Zonguldak Bülent Ecevit UniversityAnkara Universitesi (creator_code:org_t)
Related titles
- In:Journal of Photochemistry and Photobiology A: Chemistry: Elsevier BV372, s. 226-2341010-6030
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