- Title
- A comparative photophysicochemical study of mono substituted phthalocyanines grafted onto silica nanoparticles
- Creator
- Fashina, Adebayo
- Creator
- Antunes, Edith M
- Creator
- Nyokong, Tebello
- Subject
- To be catalogued
- Date Issued
- 2014
- Date
- 2014
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/193844
- Identifier
- vital:45399
- Identifier
- xlink:href="https://doi.org/10.1142/S1088424614500138"
- Description
- In this study, we report on the covalent linking of carboxylic acid functionalized silica nanoparticles with zinc phthalocyanine mono-substituted non-peripherally and peripherally with either a 4-amino phenoxy (1, peripheral and 2, non-peripheral) or an amino group (3 peripheral). The grafting is achieved via the formation of an amide bond between the carboxylic acid of the silica nanoparticles and the amino group of the phthalocyanine complexes. The hybrid nanoparticles retained the amorphous nature of silica nanoparticles after conjugation. A slight decrease in fluorescence and a general improvement in triplet quantum yields compared to free Pcs were observed. Triplet lifetimes for 2-SiNPs and 3-SiNPs also improved when compared to the free phthalocyanine. The changes in singlet oxygen quantum yields upon conjugation were minimal.
- Format
- computer
- Format
- online resource
- Format
- application/pdf
- Format
- 1 online resource (10 pages)
- Format
- Publisher
- World Scientific Publishing
- Language
- English
- Relation
- Journal of Porphyrins and Pthalocyanines
- Relation
- Fashina, A., Antunes, E. and Nyokong, T., 2014. A comparative photophysicochemical study of mono substituted phthalocyanines grafted onto silica nanoparticles. Journal of Porphyrins and Phthalocyanines, 18(05), pp.396-405
- Relation
- Journal of Porphyrins and Pthalocyanines volume 18 number 05 p. 396 2014 1099-1409
- Rights
- Publisher
- Rights
- Use of this resource is governed by the terms and conditions of the World Scientific Copyright and Permissions Statement (https://0-www.worldscientific.com.wam.seals.ac.za/page/permissions)
- Rights
- Closed Access
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Collections
Antunes, Edith Martins (Dr)
Nyokong, Tebello (Distinguished Professor)
RU DST/NRF SARChI for Medicinal Chemistry and Nanotechnology
RU Department of Chemistry
| Thumbnail | File | Description | Size | Format | |||
|---|---|---|---|---|---|---|---|
| View Details Download | SOURCE1 | A comparative photophysicochemical study of mono substituted phthalocyanines.pdf | 718 KB | Adobe Acrobat PDF | View Details Download |