{"id":5062,"date":"2025-09-10T09:59:55","date_gmt":"2025-09-10T06:59:55","guid":{"rendered":"https:\/\/science.uokerbala.edu.iq\/en\/?p=5062"},"modified":"2025-09-10T09:59:55","modified_gmt":"2025-09-10T06:59:55","slug":"a-masters-thesis-at-the-university-of-kerbala-explores-the-design-and-investigation-of-novel-hybrid-materials-as-nonlinear-optical-nlo-chromophores","status":"publish","type":"post","link":"https:\/\/science.uokerbala.edu.iq\/en\/2025\/09\/10\/a-masters-thesis-at-the-university-of-kerbala-explores-the-design-and-investigation-of-novel-hybrid-materials-as-nonlinear-optical-nlo-chromophores\/","title":{"rendered":"A Master\u2019s thesis at the University of Kerbala explores the design and investigation of novel hybrid materials as nonlinear optical (NLO) chromophores."},"content":{"rendered":"

The faculty of Science at the University of Kerbala examined a Master\u2019s thesis presented by Khamis Shallal Ghayyadh from the Department of Chemistry, which focused on designing and studying new hybrid materials as nonlinear optical chromophores (NLO) using quantum chemistry techniques.<\/p>\n

The thesis aimed to design and evaluate novel hybrid materials based on polyoxometalates (POMs) functionalized with strong donor groups such as pyrene and its derivatives. It also sought to enhance the optoelectronic properties of the system, investigate the stability of the derivatives, and examine the influence of imide group methylation on NLO characteristics. Additionally, the research analyzed how substituent groups affect pyrene\u2019s structure and the charge transfer from the ligand to the POM.<\/p>\n

The results demonstrated that the designed pyrene\u2013POM compounds exhibited enhanced nonlinear optical properties. DFT\/TD-DFT calculations revealed an increase in hyperpolarizability while maintaining the transparency window, highlighting the strong donor effect of pyrene in enhancing second-order NLO activity. The findings further confirmed that adjacent methylation at the imide linkage significantly influences the nanostructural stability and bond lengths.<\/p>\n

The thesis concluded that these hybrid materials represent a promising pathway for developing advanced nonlinear optical materials with potential applications in photonics.<\/p>\n

The recommendations included expanding studies on different pyrene derivatives and their impact on NLO activity, examining the role of acceptor strength by varying POM types such as Keggin and Anderson, and encouraging the synthesis and experimental testing of these novel materials.<\/p>\n