- Title
- Photophysics and photochemistry of octaglucosylated zinc phthalocyanine derivatives
- Creator
- Iqbal, Zafar, Ogunsipe, Abimbola, Nyokong, Tebello, Lyubimtsev, Alexey, Hanack, Michael, Ziegler, Thomas
- Subject
- To be catalogued
- Date
- 2012
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/244416
- Identifier
- vital:51255
- Identifier
- xlink:href="https://doi.org/10.1142/S1088424612500630"
- Description
- The ground state electronic absorption spectra, photophysics and photochemistry of amphiphilic octaglucosylated zinc phthalocyanines containing oxygen or sulfur bridges are presented. Triplet quantum yield values for the two dyes (in DMF and DMSO) vary between 0.71 and 0.84, while singlet quantum yield values lie between 0.63 and 0.75. Fluorescence lifetimes were determined experimentally by time correlated single photon counting and semi-empirically by fluorescence quenching techniques; and values from both methods were within the same range. Kinetic data were obtained for the quenching of the triplet state of the phthalocyanines by ground state molecular oxygen; the bimolecular collisional quenching rate constant range between 2.35 × 108 and 1.13 × 109 M-1.s-1. These values suggest that triplet states of the dyes are effectively quenched by ground molecular oxygen.
- Format
- computer, online resource, application/pdf, 1 online resource (10 pages), pdf
- Publisher
- World Scientific Publishing
- Language
- English
- Relation
- Journal of Porphyrins and Phthalocyanines, Iqbal, Z., Ogunsipe, A., Nyokong, T., Lyubimtsev, A., Hanack, M. and Ziegler, T., 2012. Photophysics and photochemistry of octaglucosylated zinc phthalocyanine derivatives. Journal of Porphyrins and Phthalocyanines, 16(04), pp.413-422, Journal of Porphyrins and Phthalocyanines volume 16 number 04 p. 413 2012 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
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 | Photophysics and photochemistry of octaglucosylated zinc phthalocyanine derivatives.pdf | 873 KB | Adobe Acrobat PDF | View Details Download |