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Design of Promising Heptacoordinated Organotin (IV) Complexes-PEDOT: PSS-Based Composite for New-Generation
María Elena Sánchez-Vergara1, Leon Hamui1, Elizabeth Gómez2
1Facultad de Ingeniería, Universidad Anáhuac México, Avenida Universidad Anáhuac 46, Col. Lomas Anáhuac, Huixquilucan 52786, Estado de México, Mexico.
Polymers
|April 3, 2021
Summary
Researchers synthesized novel heptacoordinated organotin (IV) complexes using Schiff bases and pyrazinecarboxylic acid. These complexes, when incorporated into optoelectronic devices, demonstrated tunable electronic properties influenced by substituent groups, particularly electron-withdrawing ones.
Area of Science:
- Organometallic Chemistry
- Materials Science
- Optoelectronics
Background:
- Organotin (IV) complexes are versatile materials with potential applications in electronics.
- Tuning the optoelectronic properties of organometallic compounds is crucial for device performance.
Purpose of the Study:
- To synthesize and characterize novel heptacoordinated organotin (IV) complexes.
- To investigate the effect of structural modifications on the optoelectronic properties of these complexes.
- To evaluate the performance of devices incorporating these complexes.
Main Methods:
- Multicomponent reaction for complex synthesis.
- Characterization using UV-vis, IR, mass spectrometry, and NMR (1H, 13C, 119Sn).
- Thin film deposition and optical bandgap determination.
- Fabrication and analysis of optoelectronic devices (PEDOT:PSS composite).
Main Results:
- Successful synthesis of four mononuclear heptacoordinated organotin (IV) complexes.
- Optical bandgaps determined for pellets (1.88–1.98 eV) and thin films (1.23–1.40 eV).
- Devices exhibited Schottky behavior and photocurrent generation, with properties influenced by substituents (e.g., chlorine).
Conclusions:
- The synthesized organotin (IV) complexes are suitable for optoelectronic applications.
- Electron-withdrawing substituents significantly impact the electronic properties and bandgap energies.
- The study provides insights into structure-property relationships for organotin-based electronic materials.
