Photoluminescence Quenching of a Novel Electroconductive Poly(propylene thiophenoimine)-co-Poly(ethylenedioxy thiophene) Star Copolymer
A generation 1 poly(propylene thiophenoimine)-co-poly(ethylenedioxy thiophene) (G1PPT-co-PEDOT) star copolymer, which exhibits a strong optical absorption over a broad range in the ultraviolet–visible (UV-Vis) region and with good electro/conductive properties, was chemically prepared for the first...
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| Format: | Article |
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MDPI AG
2020-12-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/12/12/2894 |
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| author | Anne Lutgarde Djoumessi Yonkeu Miranda Mengwi Ndipingwi Chinwe Ikpo Kelechi Nwambaekwe Sodiq Yussuf Hayelom Tesfay Emmanuel Iwuoha |
| author_facet | Anne Lutgarde Djoumessi Yonkeu Miranda Mengwi Ndipingwi Chinwe Ikpo Kelechi Nwambaekwe Sodiq Yussuf Hayelom Tesfay Emmanuel Iwuoha |
| author_sort | Anne Lutgarde Djoumessi Yonkeu |
| collection | DOAJ |
| description | A generation 1 poly(propylene thiophenoimine)-co-poly(ethylenedioxy thiophene) (G1PPT-co-PEDOT) star copolymer, which exhibits a strong optical absorption over a broad range in the ultraviolet–visible (UV-Vis) region and with good electro/conductive properties, was chemically prepared for the first time. Synthesis of the star copolymer, G1PPT-co-PEDOT was confirmed by spectroscopic studies. Indeed, the disappearance of the very high intensity bands, C–H bending at α-position (687 cm<sup>−1</sup>), and C=N stretching (1620 cm<sup>−1</sup>) in the Fourier transform infrared spectroscopy (FTIR) of G1PPT-co-PEDOT, which were initially present in the spectrum of the thiolated starting material, G1PPT, confirmed copolymerization. Furthermore, a large bathochromic shift in the onset wavelength of the UV-Vis absorbance spectra from 367 nm in G1PPT to 674 nm in G1PPT-co-PEDOT further attests of successful copolymerization. The electrochemical analysis of G1PPT-co-PEDOT achieved a highest occupied molecular orbital (HOMO) energy level value of 5.3 eV, which is reminiscent of the value for an ideal electron-donor material. Photoluminescence quenching of up to 82% was observed in solution blends of the G1PPT-co-PEDOT star copolymer and <i>N</i>,<i>N</i>′-diisopropyl naphthalene diimide (NDI). This demonstrates the occurrence of photoinduced intermolecular charge transfer (PICT) from the electron-donating G1PPT-co-PEDOT to the electron accepting NDI, a good property, beneficial for optoelectronic and photovoltaic applications. |
| first_indexed | 2024-03-10T14:21:36Z |
| format | Article |
| id | doaj.art-a1f356d9f1034c55bd21af42e64b8504 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T14:21:36Z |
| publishDate | 2020-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-a1f356d9f1034c55bd21af42e64b85042023-11-20T23:19:59ZengMDPI AGPolymers2073-43602020-12-011212289410.3390/polym12122894Photoluminescence Quenching of a Novel Electroconductive Poly(propylene thiophenoimine)-co-Poly(ethylenedioxy thiophene) Star CopolymerAnne Lutgarde Djoumessi Yonkeu0Miranda Mengwi Ndipingwi1Chinwe Ikpo2Kelechi Nwambaekwe3Sodiq Yussuf4Hayelom Tesfay5Emmanuel Iwuoha6SensorLab, University of the Western Cape Sensor Laboratories, Robert Sobukwe Road, Bellville 7570, Cape Town, South AfricaSensorLab, University of the Western Cape Sensor Laboratories, Robert Sobukwe Road, Bellville 7570, Cape Town, South AfricaSensorLab, University of the Western Cape Sensor Laboratories, Robert Sobukwe Road, Bellville 7570, Cape Town, South AfricaSensorLab, University of the Western Cape Sensor Laboratories, Robert Sobukwe Road, Bellville 7570, Cape Town, South AfricaSensorLab, University of the Western Cape Sensor Laboratories, Robert Sobukwe Road, Bellville 7570, Cape Town, South AfricaSensorLab, University of the Western Cape Sensor Laboratories, Robert Sobukwe Road, Bellville 7570, Cape Town, South AfricaSensorLab, University of the Western Cape Sensor Laboratories, Robert Sobukwe Road, Bellville 7570, Cape Town, South AfricaA generation 1 poly(propylene thiophenoimine)-co-poly(ethylenedioxy thiophene) (G1PPT-co-PEDOT) star copolymer, which exhibits a strong optical absorption over a broad range in the ultraviolet–visible (UV-Vis) region and with good electro/conductive properties, was chemically prepared for the first time. Synthesis of the star copolymer, G1PPT-co-PEDOT was confirmed by spectroscopic studies. Indeed, the disappearance of the very high intensity bands, C–H bending at α-position (687 cm<sup>−1</sup>), and C=N stretching (1620 cm<sup>−1</sup>) in the Fourier transform infrared spectroscopy (FTIR) of G1PPT-co-PEDOT, which were initially present in the spectrum of the thiolated starting material, G1PPT, confirmed copolymerization. Furthermore, a large bathochromic shift in the onset wavelength of the UV-Vis absorbance spectra from 367 nm in G1PPT to 674 nm in G1PPT-co-PEDOT further attests of successful copolymerization. The electrochemical analysis of G1PPT-co-PEDOT achieved a highest occupied molecular orbital (HOMO) energy level value of 5.3 eV, which is reminiscent of the value for an ideal electron-donor material. Photoluminescence quenching of up to 82% was observed in solution blends of the G1PPT-co-PEDOT star copolymer and <i>N</i>,<i>N</i>′-diisopropyl naphthalene diimide (NDI). This demonstrates the occurrence of photoinduced intermolecular charge transfer (PICT) from the electron-donating G1PPT-co-PEDOT to the electron accepting NDI, a good property, beneficial for optoelectronic and photovoltaic applications.https://www.mdpi.com/2073-4360/12/12/2894electron donorphotoinduced charge transferphotoluminescence quenchingpoly(propylene imine) dendrimerstar copolymer |
| spellingShingle | Anne Lutgarde Djoumessi Yonkeu Miranda Mengwi Ndipingwi Chinwe Ikpo Kelechi Nwambaekwe Sodiq Yussuf Hayelom Tesfay Emmanuel Iwuoha Photoluminescence Quenching of a Novel Electroconductive Poly(propylene thiophenoimine)-co-Poly(ethylenedioxy thiophene) Star Copolymer Polymers electron donor photoinduced charge transfer photoluminescence quenching poly(propylene imine) dendrimer star copolymer |
| title | Photoluminescence Quenching of a Novel Electroconductive Poly(propylene thiophenoimine)-co-Poly(ethylenedioxy thiophene) Star Copolymer |
| title_full | Photoluminescence Quenching of a Novel Electroconductive Poly(propylene thiophenoimine)-co-Poly(ethylenedioxy thiophene) Star Copolymer |
| title_fullStr | Photoluminescence Quenching of a Novel Electroconductive Poly(propylene thiophenoimine)-co-Poly(ethylenedioxy thiophene) Star Copolymer |
| title_full_unstemmed | Photoluminescence Quenching of a Novel Electroconductive Poly(propylene thiophenoimine)-co-Poly(ethylenedioxy thiophene) Star Copolymer |
| title_short | Photoluminescence Quenching of a Novel Electroconductive Poly(propylene thiophenoimine)-co-Poly(ethylenedioxy thiophene) Star Copolymer |
| title_sort | photoluminescence quenching of a novel electroconductive poly propylene thiophenoimine co poly ethylenedioxy thiophene star copolymer |
| topic | electron donor photoinduced charge transfer photoluminescence quenching poly(propylene imine) dendrimer star copolymer |
| url | https://www.mdpi.com/2073-4360/12/12/2894 |
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