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An efficient method for the surface functionalization of luminescent quantum dots with lipoic acid-based ligands
We describe an operationally advantageous general methodology to efficiently activate lipoic acid-based compounds - a family of popular surface ligands for semiconductor nanocrystals - by the use of a borohydride exchange resin, and the use of the activated species to replace the native surface liga...
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| Main Authors: | , , , , , , |
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| Format: | Default Article |
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2017
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| Subjects: | |
| Online Access: | https://hdl.handle.net/2134/26613 |
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| _version_ | 1818170959307210752 |
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| author | Marcello La Rosa Tommaso Avellini Christophe Lincheneau Serena Silvi Iain Wright Edwin C. Constable Alberto Credi |
| author_facet | Marcello La Rosa Tommaso Avellini Christophe Lincheneau Serena Silvi Iain Wright Edwin C. Constable Alberto Credi |
| author_sort | Marcello La Rosa (4005695) |
| collection | Figshare |
| description | We describe an operationally advantageous general methodology to efficiently activate lipoic acid-based compounds - a family of popular surface ligands for semiconductor nanocrystals - by the use of a borohydride exchange resin, and the use of the activated species to replace the native surface ligands of quantum dots. The procedure enables the phase transfer of the nanocrystals between polar and aqueous media and, if unsubstituted lipoic acid is used, a facile adjustment of their solubility in a wide range of solvents with varying polarity (from hexane to water). We show that the protocol is applicable to different types of nanocrystals and a variety of lipoic acid-based ligands, and that the resulting quantum dots maintain their optical properties - in particular, an intense luminescence - and long term colloidal stability. |
| format | Default Article |
| id | rr-article-9391466 |
| institution | Loughborough University |
| publishDate | 2017 |
| record_format | Figshare |
| spelling | rr-article-93914662017-01-01T00:00:00Z An efficient method for the surface functionalization of luminescent quantum dots with lipoic acid-based ligands Marcello La Rosa (4005695) Tommaso Avellini (1454530) Christophe Lincheneau (1687948) Serena Silvi (836234) Iain Wright (3281406) Edwin C. Constable (1772431) Alberto Credi (836232) Inorganic chemistry not elsewhere classified Other chemical sciences not elsewhere classified CdSe Nanoparticle Phase transfer Semiconductor nanocrystal Solubility Chemical Sciences not elsewhere classified Inorganic Chemistry We describe an operationally advantageous general methodology to efficiently activate lipoic acid-based compounds - a family of popular surface ligands for semiconductor nanocrystals - by the use of a borohydride exchange resin, and the use of the activated species to replace the native surface ligands of quantum dots. The procedure enables the phase transfer of the nanocrystals between polar and aqueous media and, if unsubstituted lipoic acid is used, a facile adjustment of their solubility in a wide range of solvents with varying polarity (from hexane to water). We show that the protocol is applicable to different types of nanocrystals and a variety of lipoic acid-based ligands, and that the resulting quantum dots maintain their optical properties - in particular, an intense luminescence - and long term colloidal stability. 2017-01-01T00:00:00Z Text Journal contribution 2134/26613 https://figshare.com/articles/journal_contribution/An_efficient_method_for_the_surface_functionalization_of_luminescent_quantum_dots_with_lipoic_acid-based_ligands/9391466 CC BY-NC-ND 4.0 |
| spellingShingle | Inorganic chemistry not elsewhere classified Other chemical sciences not elsewhere classified CdSe Nanoparticle Phase transfer Semiconductor nanocrystal Solubility Chemical Sciences not elsewhere classified Inorganic Chemistry Marcello La Rosa Tommaso Avellini Christophe Lincheneau Serena Silvi Iain Wright Edwin C. Constable Alberto Credi An efficient method for the surface functionalization of luminescent quantum dots with lipoic acid-based ligands |
| title | An efficient method for the surface functionalization of luminescent quantum dots with lipoic acid-based ligands |
| title_full | An efficient method for the surface functionalization of luminescent quantum dots with lipoic acid-based ligands |
| title_fullStr | An efficient method for the surface functionalization of luminescent quantum dots with lipoic acid-based ligands |
| title_full_unstemmed | An efficient method for the surface functionalization of luminescent quantum dots with lipoic acid-based ligands |
| title_short | An efficient method for the surface functionalization of luminescent quantum dots with lipoic acid-based ligands |
| title_sort | efficient method for the surface functionalization of luminescent quantum dots with lipoic acid-based ligands |
| topic | Inorganic chemistry not elsewhere classified Other chemical sciences not elsewhere classified CdSe Nanoparticle Phase transfer Semiconductor nanocrystal Solubility Chemical Sciences not elsewhere classified Inorganic Chemistry |
| url | https://hdl.handle.net/2134/26613 |