- Title
- Photophysical and strong optical limiting properties of ball-type phthalocyanines dimers and their monomeric analogues
- Creator
- Nwaji, Njemuwa, Mack, John, Nyokong, Tebello
- Subject
- To be catalogued
- Date
- 2018
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/187930
- Identifier
- vital:44711
- Identifier
- xlink:href="https://doi.org/10.1016/j.jphotochem.2017.10.045"
- Description
- The nonlinear optical behaviors of ball-type phthalocyanine complexes: 1′,11,’15′,25′-tetrakis-[4,4′-((4-formyl-1,2-bisphenoxyl))bis(phthalocyaninato zinc (II)] (5), 1′,11,’15′,25′-tetrakis-[4,4′-((4-formyl-1,2-bisphenoxyl) bis(phthalocyaninato gallium (III) chloride)] (6), and 1′, 11,’15′,25′-tetrakis-4,4′-((4-formyl-1,2-phenoxyl)bis(phthalocyaninato indium (III) chloride)] (7) and the corresponding monomeric derivatives 8–10 were investigated using nanosecond pulse open aperture Z-scan technique at 532 nm. The nonlinear response showed strong reverse saturable absorption for all the complexes both in solution and when embedded in polymer matrix. The dimeric complexes showed better optical limiting properties compared to the monomeric derivatives. The βeff values for the dimeric complexes 5–7 were found to be 48.5, 55.2, and 60.1 cm/GW for 5, 6A, and 7 respectively, higher than the corresponding monomeric derivatives 8–10. Enhanced optical limiting properties were observed when the complexes were formulated in thin films. The second order hyperpolarizability values were in order of 10−28–10−26 esu in solution and 10−27–10−26 in films.
- Format
- computer, online resource, application/pdf, 1 online resource (13 pages), pdf
- Publisher
- Elsevier
- Language
- English
- Relation
- Journal of Photochemistry and Photobiology A: Chemistry, Nwaji, N., Mack, J. and Nyokong, T., 2018. Photophysical and strong optical limiting properties of ball-type phthalocyanines dimers and their monomeric analogues. Journal of Photochemistry and Photobiology A: Chemistry, 352, pp.73-85, Journal of Photochemistry and Photobiology A: Chemistry volume 352 p. 73 2018 1010-6030
- Rights
- Publisher
- Rights
- Use of this resource is governed by the terms and conditions of the Elsevier Terms and Conditions Statement (https://www.elsevier.com/legal/elsevier-website-terms-and-conditions)
- Rights
- Closed Access
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Collections
Mack, John (Associate Prof)
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 | Photophysical and nonlinear optical properties.pdf | 831 KB | Adobe Acrobat PDF | View Details Download |