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Abstract
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p-Conjugated organic molecules possess highly versatile optoelectronic
properties, such as light absorption and emission,
that can be customized to a great extent. These molecules are
already being used commercially in various areas, such as
exible electronics, optical displays, and logic circuits.1–3
Moreover, the application of organic compounds has witnessed
remarkable interdisciplinary research in the elds of physics
and materials science.1–6 Triazine derivatives are a well-known
category of nitrogen-containing heterocyclic compounds. They
serve as a fundamental component in a diverse array of applications,
including optical bleaches, plastics, textiles, pharmaceuticals,
rubber production, and surface-active agents.3–5 These
derivatives have found extensive use as electron transport
materials in organic light-emitting diodes (OLEDs), as thermally
active delayed uorescence emitters (TADF), and as
donors in bulk heterojunction solar cells.3–8 An intriguing
characteristic of triazine compound derivatives is their ability to
form complexes with metal ions.9
The derivatives of 3-pyridyl-1,2,4-triazine have garnered
attention due to their diverse coordination chemistry. For
example, 3-(2-pyridyl)-5,6-diphenyl-1,2,4-triazine forms colored
complexes with certain transition metal ions, offering potential
applications in colorimetric analysis.10 Other derivatives, such
as 2,4,6-tris[bis(pyridin-2-yl)amino]-1,3,5-triazine,11 2,6-bis(tetramethylfuryl)-
1,2,4-triazin-3-yl)pyridine,12 and 5,6-diphenyl-3-
(2-pyridyl)-1,2,4-triazine,13 have been utilized in the construction
of metal–organic frameworks (MOFs) with varying degrees
of dimensionality.
Recently, complexes of lead(II) with various ligands such as 3-
(2-pyridyl)-5,6-diphenyl-1,2,4-triazine (pdpt),14,15 3,5,6-tris(2-
pyridyl)-1,2,4-triazine (tpt),16,17 3-(2-pyridyl)-5,6-diphenyl-1,2,4-
triazine-p,p0-disulfonate (pdpts),18 3-(2-pyridyl)-5-phenyl-1,2,4-
triazine (ppt),19 and 3-(2-pyridyl)-5,6-di(2-furyl)-1,2,4-triazin
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