Post synthetically modified compounds of Cd-MOF by l-amino acids for luminescent applications

• Published in: Journal of solid state chemistry 2020-07, Vol.287, p.121320, Article 121320
• Main Authors: Ahmed, Imtiaz, Yunus, Uzma, Nadeem, Muhammad, Bhatti, Moazzam H., Mehmood, Mazhar
• Format: Article
• Language: English
• Subjects: l-amino acids; Luminescence; NMR; PSM; XRD
• ISSN: 0022-4596; 1095-726X
• DOI: 10.1016/j.jssc.2020.121320

Luminescent MOFs are ideal tools for sensing applications owing to the ability to trap analytes. A series of seven novel polymeric compounds i.e. [Cd(1,4-BDC) (Pro) (H2O)]∞, [Cd(1,4-BDC) (L-Trp) (H2O)]∞, [Cd(1,4-BDC) (L-Ala) (H2O)]∞, [Cd(1,4-BDC) (L-Phe) (H2O)]∞, [Cd(1,4-BDC) (L-Val) (H2O)]∞, [Cd(1,4-BDC) (L-Leu) (H2O)]∞, [Cd(1,4-BDC) (L-Arg) (H2O)]∞ were synthesized from layered structure Cd-MOF using the technique of postsynthetic modification. The postsynthetic modification was performed on metal center through the utilization of pure l-amino acids Proline(Pro), Tryptophan(Trp), Alanine(Ala), Phenylalanine (Phe). Valine(Val), Leucine(Leu) and Arginine (Arg). The post synthetically modified compounds were characterized by FTIR, TGA, 1H NMR, Elemental analysis, PXRD and UV–visible spectroscopy. Luminescence properties were investigated in solid-state, which shows that all the novel compound has higher emission intensity as compared to parent MOF. Olive green color for ball and curve indicates the valine amino acid and its luminescence curve that has significant high intensity as compare to other PSM compounds generated by other amino acids. [Display omitted] •Crystalline Cd-MOF was synthesized hydrothermally.•Seven Novel compounds have been obtained by modifying Cd-MOF using l-Amino acids.•Their structures have been investigated through FTIR, 1H NMR, and PXRD.•Thermal behavior of all the compounds has been studied.•The compound obtained by using l-Valine has shown profound luminescence.