مشخصات پژوهش

صفحه نخست /A 2-D coordination polymer ...
عنوان
A 2-D coordination polymer based on 3-(2- pyridyl)-5-(4-chlorophenyl)-1,2,4-triazine ligands and lead(II) bromide: synthesis, structure, luminescent properties, and application in organic light-emitting diodes
نوع پژوهش مقاله چاپ شده
کلیدواژه‌ها
3-(2-Pyridyl)-5-(4-chlorophenyl)- 1,2,4-triazine; lead(II); luminescent; crystal structure; OLEDs
چکیده
The design and assembly of coordination polymers (CPs) have gained immense attention for their captivating architectures, topologies, and diverse applications in heterogeneous catalysis [1], luminescence [2–4], gas storage [5, 6], biomolecular loading [7], and optical devices [8, 9]. As such, it is valuable to explore methods for strategically obtaining targeted structures with distinct characteristics. Numerous attempts have been dedicated to achieving favorable structures and attributes. It has been observed that the formation of CPs can be delicately influenced by various factors, including the metal ion, coordination process, ligand coordination capacity, solvent properties, the impact of counterions, pH levels, molar ratios of reactants, and reaction temperatures [10]. In contrast to transition metals and lanthanides [11], there has been relatively less focus on creating CPs utilizing s or p block metal ions. Divalent lead belongs to the post-transition metal group and has an electronic configuration of [Xe] 4f145d106s2. Despite being a significant toxic metal pollutant that raises global environmental alarms [12], its substantial ionic radius allows for versatile coordination, enabling the creation of unique network structures with intriguing properties. Specifically, lead(II) possesses a 6s2 electron lone pair that can become stereochemically influential, inducing distortion in the coordination environment and resulting in hemidirected or holodirected geometries [13]. Additionally, lead(II) displays strong optical characteristics, demonstrating luminescence in organometallic complexes [14–16]. Nevertheless, the activity of the lone electron pair is contingent on the level of electron donation from ligands to the metal [17]. Studies focusing on creating supramolecular structures incorporating Pb2þthrough the collaborative influence of diverse non-covalent interactions have been documented [13, 18]. Tetrel bonding interactions (r-hole bonds [19] formed by group
پژوهشگران اکبر ارکاک (نفر اول)، مؤید حسینی صدر (نفر دوم)، محمد جانقوری (نفر سوم)، فرزین مرندی (نفر چهارم)، هرالد کراوتسچید (نفر پنجم)