Synthesis and characterization of cyanuric-based dye-sensitizer for solar cells, their photo-response in the visible region and chemosensing properties select="/dri:document/dri:meta/dri:pageMeta/dri:metadata[@element='title']/node()"/>

DSpace Repository

Show simple item record

dc.contributor.author Mabuku, Simasiku Dan
dc.date.accessioned 2021-07-20T06:09:53Z
dc.date.available 2021-07-20T06:09:53Z
dc.date.issued 2021
dc.identifier.uri http://hdl.handle.net/11070/2975
dc.description A thesis submitted in partial fulfillment of the requirements for the Degree of Master of Science in Chemistry en_US
dc.description.abstract Two cyanuric-based potential dye-sensitizers were synthesized (Dye 1 & Dye 2), and characterized spectroscopically, UV-vis and FTIR among other techniques. Their photoresponse properties in the visible region were investigated (in ethanol at 1×10−5M) and studied. In addition, solvatochromic effect was also investigated, in solvents such as acetonitrile, ethyl acetate, ethanol, methanol and toluene. It was established that both dyes have good solubility in ethanol and acetonitrile, compared to the others. Photophysical measurements suggest that the compounds display fitting light absorption characteristics for use as sensitizer in dye-sensitized solar cells (DSSCs), with absorption maxima centered in the visible region in both cases. However, Dye 2 (compared to Dye 1) is highly likely to be more functional as a solar material, as evidenced by its wide absorption range in the visible region resulting from its appropriate charge transfer mechanism, the intramolecular charge transfer (ICT), which may translate into enhanced photon harvesting. In addition, Dye 1 & Dye 2 can function as chemosensors by exploiting the same ICT mechanism, which makes them suitable for dye sensitizers. Subsequently, upon conducting UV-Vis analysis, Dye 1 appears to have selective recognition of Al3+ and Cu2+, whereas Dye 2 has a selective recognition of Pb2+ from all the cations that they were tested against (Al+, Co2+, Cr2+, Cu2+, Fe2+, K+, Li+, Pb2+). Similarly, Dye 1 and Dye 2 were also tested against anions (SO42-, AcO-, Br-, CN-, F-, NO3- and PO43-), in which Dye 1 demonstrated selective recognition of SO42-, CN-, PO42- and F- , while Dye 2 has selective recognition of ONLY SO42- and F-. Thus, Dye 1 & Dye 2 are both classified as dual sensors, for possessing more than one recognition site with its structural framework. en_US
dc.language.iso en en_US
dc.publisher University of Namibia en_US
dc.subject Cyanuric-based dye en_US
dc.subject Solar cells en_US
dc.subject Chemosensing en_US
dc.title Synthesis and characterization of cyanuric-based dye-sensitizer for solar cells, their photo-response in the visible region and chemosensing properties en_US
dc.type Thesis en_US


Files in this item

This item appears in the following Collection(s)

Show simple item record