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Photophysical Investigations of the Organic Compounds Synthesised from Waste Poly(Ethylene Terephthalate).
- Source :
- Ecological Chemistry & Engineering S / Chemia i Inzynieria Ekologiczna S; Jun2024, Vol. 31 Issue 2, p253-266, 14p
- Publication Year :
- 2024
-
Abstract
- This paper presents the photophysical investigations of two organic compounds synthesised directly by the aminolysis depolymerisation of the waste poly(ethylene terephthalate) (rPET) with aromatic amines, i.e., aniline and 3-amino-N-hexyl-1,8-naphthalimide without use of a catalyst. The chemical structure was confirmed by <superscript>1</superscript>H-NMR and <superscript>13</superscript>C-NMR, as well as FT-IR. The thermal, electrochemical and optical studies of the obtained derivatives were performed. The presented compounds were thermally stable up to 360 °C, and the glass transition temperature (T<subscript>g</subscript>) occurred for the compound with the 1,8-naphthalimide units. The electrochemical investigations of the synthesised compounds have revealed one oxidation process and two reduction processes for the compound with the 1,8-naphthalimide fragments. The tested derivatives were characterised by a low-lying highest occupied molecular orbital (HOMO) level (below –6.09 eV) and an energy-band gap (E<subscript>g</subscript>) below 3.10 eV. The obtained molecules were absorbed in the range of 204 nm - 445 nm and emitted light from a purple to a green spectral region deepened on the used solvent with low quantum yields. The blends with poly(3-hexylthiophene-2,5-diyl) (P3HT), which is used as a donor in the bulk heterojunction solar cells (BHJ), and amide derivative with 1,8-naphthalimide fragments were made, and the emission quenching of poly(3-hexylthiophene-2,5-diyl) (P3HT) was recorded. The presented results of the photophysical investigations have opened new possibilities for obtaining functional materials from recycled poly(ethylene terephthalate) (rPET). [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 18986196
- Volume :
- 31
- Issue :
- 2
- Database :
- Complementary Index
- Journal :
- Ecological Chemistry & Engineering S / Chemia i Inzynieria Ekologiczna S
- Publication Type :
- Academic Journal
- Accession number :
- 178426153
- Full Text :
- https://doi.org/10.2478/eces-2024-0018