Design of Promising Heptacoordinated Organotin (IV) Complexes-PEDOT: PSS-Based Composite for New-Generation Optoelectronic Devices Applications

The synthesis of four mononuclear heptacoordinated organotin (IV) complexes of mixed ligands derived from tridentated Schiff bases and pyrazinecarboxylic acid is reported. This organotin (IV) complexes were prepared by using a multicomponent reaction, the reaction proceeds in moderate to good yields...

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Bibliographic Details
Published in:Polymers 2021-03, Vol.13 (7), p.1023
Main Authors: Sánchez-Vergara, María Elena, Hamui, Leon, Gómez, Elizabeth, Chans, Guillermo M, Galván-Hidalgo, José Miguel
Format: Article
Language:English
Subjects:
Aqueous solutions
Aromatic compounds
Carboxyl group
Catalysis
Chemical analysis
Chemistry
Chlorine
Coordination compounds
Electric contacts
Electrodes
Energy gap
Flexibility
Glass substrates
Imines
Infrared spectroscopy
Ligands
Light emitting diodes
Mass spectrometry
NMR
Nuclear magnetic resonance
Optoelectronic devices
Photoconductivity
Photoelectric effect
Photoelectric emission
Polymers
Polystyrene resins
Silicon wafers
Solvents
Substitution reactions
Thin films
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Summary:The synthesis of four mononuclear heptacoordinated organotin (IV) complexes of mixed ligands derived from tridentated Schiff bases and pyrazinecarboxylic acid is reported. This organotin (IV) complexes were prepared by using a multicomponent reaction, the reaction proceeds in moderate to good yields (64% to 82%). The complexes were characterized by UV-vis spectroscopy, IR spectroscopy, mass spectrometry, H, C, and Sn nuclear magnetic resonance (NMR) and elemental analysis. The spectroscopic analysis revealed that the tin atom is seven-coordinate in solution and that the carboxyl group acts as monodentate ligand. To determine the effect of the substituent on the optoelectronic properties of the organotin (IV) complexes, thin films were deposited, and the optical bandgap was obtained. A bandgap between 1.88 and 1.98 eV for the pellets and between 1.23 and 1.40 eV for the thin films was obtained. Later, different types of optoelectronic devices with architecture "contacts up/base down" were manufactured and analyzed to compare their electrical behavior. The design was intended to generate a composite based on the synthetized heptacoordinated organotin (IV) complexes embedded on the poly(3,4-ethylenedyoxithiophene)-poly(styrene sulfonate) (PEDOT:PSS). A Schottky curve at low voltages (
ISSN:2073-4360
2073-4360
DOI:10.3390/polym13071023