Gold()-doped films: new routes for efficient room temperature phosphorescent materials
The synthesis of four novel gold( i )-phosphane complexes coordinated to 9-phenanthrene chromophore has been carried out through the reaction of 9-phenanthreneboronic acid and the corresponding AuClPR 3 (PR 3 = PPh 3 for triphenylphosphane ( 1a ); 1,4-bis(diphenylphosphanyl)butane or dppb ( 2b ); bi...
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Published in | Dalton transactions : an international journal of inorganic chemistry Vol. 5; no. 11; pp. 386 - 3815 |
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Main Authors | , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
England
Royal Society of Chemistry
21.03.2021
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Subjects | |
Online Access | Get full text |
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Summary: | The synthesis of four novel gold(
i
)-phosphane complexes coordinated to 9-phenanthrene chromophore has been carried out through the reaction of 9-phenanthreneboronic acid and the corresponding AuClPR
3
(PR
3
= PPh
3
for triphenylphosphane (
1a
); 1,4-bis(diphenylphosphanyl)butane or dppb (
2b
); bis(diphenylphosphanyl)acetylene or dppa (
2c
); (AuCl)
2
(diphos) (diphos = bis(diphenylphosphanyl)methane or dppm (
3
)) sources. The X-ray crystal structures of compounds
1a
and
2b
show the existence of MOF-like intermolecular assemblies that contain empty inner cavities in the absence of aurophilic contacts. In contrast, the formation of a tetranuclear complex with intramolecular aurophilic interactions was evidenced for
3
. Photophysical characterization indicates dual emission in all gold(
i
) complexes when oxygen is removed from the sample, while only fluorescence emission is recorded for the uncoordinated ligand. The introduction of the compounds within PMMA and Zeonex was assayed, and luminescent films containing gold(
i
) complexes where phosphorescence is the sole pathway for emission are obtained, instead of the dual emission (with significant fluorescence contribution) recorded in solution.
The synthesis of four novel gold(
i
)-phosphane complexes coordinated to 9-phenanthrene has been carried out and their inclusion within organic matrixes showed the formation of new pure room temperature phosphorescence materials. |
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Bibliography: | Electronic supplementary information (ESI) available. CCDC For ESI and crystallographic data in CIF or other electronic format see DOI and 10.1039/d1dt00087j , 2031247 2019745 2031248 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1477-9226 1477-9234 |
DOI: | 10.1039/d1dt00087j |