Pushing Pentacene-Based Fluorescence to the Near-Infrared Region by Platination
A series of binuclear platinum complexes of pentacenyl-6,13-diacetylide with different auxiliary ligands were synthesized to probe the effect of metal coordination on electronic spectroscopy and photophysics, to determine the solid-state packing of the complexes, and to tune emission energy. The com...
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| Published in | Organometallics Vol. 30; no. 23; pp. 6383 - 6392 |
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| Main Authors | , |
| Format | Journal Article |
| Language | English |
| Published |
American Chemical Society
12.12.2011
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| Online Access | Get full text |
| ISSN | 0276-7333 1520-6041 |
| DOI | 10.1021/om2005645 |
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| Summary: | A series of binuclear platinum complexes of pentacenyl-6,13-diacetylide with different auxiliary ligands were synthesized to probe the effect of metal coordination on electronic spectroscopy and photophysics, to determine the solid-state packing of the complexes, and to tune emission energy. The complexes with anionic, π-donating ligands showed absorption (687–696 nm) and fluorescence (710–726 nm) lower in energy than those with neutral, π-accepting ligands (662–666, 675–686 nm). Our work showed that coordination of Pt ions with π-donating anionic ligands to pentacenyl-6,13-diacetylide could move the fluorescence of the organic chromophore to the near-infrared region (λem 710–726 nm). The combined perturbations of alkynation and platination lowered the HOMO → LUMO transition up to 0.34 eV. |
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| ISSN: | 0276-7333 1520-6041 |
| DOI: | 10.1021/om2005645 |