Polyacetylene, as the simplest and the most typical conjugated polymer system with great potentials in electronics industry, was intensively studied both experimentally and theoretically in the recent decades. Many important issues about polyacetylene have been made clear, but there are still some important questions to be answered by further study. Quantum chemists often choose to extrapolate the oligomer properties to obtain the polymer properties, while the solid state physicists prefer to start with periodic boundary condition. In this article, the geometry, electronic structure and polarizability and the second hyper-polarizability of trans polyacetylene chain were studied with first principles calculations. Several commonly used functionals and basis sets were used in the study. Comparing with experimental results, the chemical model CAMB3LYP with 6-311G(d,p) basis set presents a good description for geometry, electronic structure and polarizabilities of trans polyacetylene. Response of trans polyacetylene to a longitudinal electrostatic field along the chain were obtained within the finite field scheme, and the polarizability and second hyper-polarizability were compared with those extrapolated from oligomers. It was found that the polarizability and the second hyper-polarizability of trans polyacetylene are much larger than those obtained through quadratic extrapolation from oligomer polyenes, as shows the computational study starting from periodic boundary conditions is essentially important.
Published in | American Journal of Quantum Chemistry and Molecular Spectroscopy (Volume 7, Issue 1) |
DOI | 10.11648/j.ajqcms.20230701.13 |
Page(s) | 16-19 |
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Copyright © The Author(s), 2023. Published by Science Publishing Group |
First Principles, Polyacetylene, Electronic Structure, Polarizability, Second Hyperpolarizability
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APA Style
Ying Ye, Qingxu Li. (2023). The Geometry, Electronic Structure and Response Properties of Trans Polyacetylene, a First Principle Study. American Journal of Quantum Chemistry and Molecular Spectroscopy, 7(1), 16-19. https://doi.org/10.11648/j.ajqcms.20230701.13
ACS Style
Ying Ye; Qingxu Li. The Geometry, Electronic Structure and Response Properties of Trans Polyacetylene, a First Principle Study. Am. J. Quantum Chem. Mol. Spectrosc. 2023, 7(1), 16-19. doi: 10.11648/j.ajqcms.20230701.13
AMA Style
Ying Ye, Qingxu Li. The Geometry, Electronic Structure and Response Properties of Trans Polyacetylene, a First Principle Study. Am J Quantum Chem Mol Spectrosc. 2023;7(1):16-19. doi: 10.11648/j.ajqcms.20230701.13
@article{10.11648/j.ajqcms.20230701.13, author = {Ying Ye and Qingxu Li}, title = {The Geometry, Electronic Structure and Response Properties of Trans Polyacetylene, a First Principle Study}, journal = {American Journal of Quantum Chemistry and Molecular Spectroscopy}, volume = {7}, number = {1}, pages = {16-19}, doi = {10.11648/j.ajqcms.20230701.13}, url = {https://doi.org/10.11648/j.ajqcms.20230701.13}, eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajqcms.20230701.13}, abstract = {Polyacetylene, as the simplest and the most typical conjugated polymer system with great potentials in electronics industry, was intensively studied both experimentally and theoretically in the recent decades. Many important issues about polyacetylene have been made clear, but there are still some important questions to be answered by further study. Quantum chemists often choose to extrapolate the oligomer properties to obtain the polymer properties, while the solid state physicists prefer to start with periodic boundary condition. In this article, the geometry, electronic structure and polarizability and the second hyper-polarizability of trans polyacetylene chain were studied with first principles calculations. Several commonly used functionals and basis sets were used in the study. Comparing with experimental results, the chemical model CAMB3LYP with 6-311G(d,p) basis set presents a good description for geometry, electronic structure and polarizabilities of trans polyacetylene. Response of trans polyacetylene to a longitudinal electrostatic field along the chain were obtained within the finite field scheme, and the polarizability and second hyper-polarizability were compared with those extrapolated from oligomers. It was found that the polarizability and the second hyper-polarizability of trans polyacetylene are much larger than those obtained through quadratic extrapolation from oligomer polyenes, as shows the computational study starting from periodic boundary conditions is essentially important.}, year = {2023} }
TY - JOUR T1 - The Geometry, Electronic Structure and Response Properties of Trans Polyacetylene, a First Principle Study AU - Ying Ye AU - Qingxu Li Y1 - 2023/04/27 PY - 2023 N1 - https://doi.org/10.11648/j.ajqcms.20230701.13 DO - 10.11648/j.ajqcms.20230701.13 T2 - American Journal of Quantum Chemistry and Molecular Spectroscopy JF - American Journal of Quantum Chemistry and Molecular Spectroscopy JO - American Journal of Quantum Chemistry and Molecular Spectroscopy SP - 16 EP - 19 PB - Science Publishing Group SN - 2994-7308 UR - https://doi.org/10.11648/j.ajqcms.20230701.13 AB - Polyacetylene, as the simplest and the most typical conjugated polymer system with great potentials in electronics industry, was intensively studied both experimentally and theoretically in the recent decades. Many important issues about polyacetylene have been made clear, but there are still some important questions to be answered by further study. Quantum chemists often choose to extrapolate the oligomer properties to obtain the polymer properties, while the solid state physicists prefer to start with periodic boundary condition. In this article, the geometry, electronic structure and polarizability and the second hyper-polarizability of trans polyacetylene chain were studied with first principles calculations. Several commonly used functionals and basis sets were used in the study. Comparing with experimental results, the chemical model CAMB3LYP with 6-311G(d,p) basis set presents a good description for geometry, electronic structure and polarizabilities of trans polyacetylene. Response of trans polyacetylene to a longitudinal electrostatic field along the chain were obtained within the finite field scheme, and the polarizability and second hyper-polarizability were compared with those extrapolated from oligomers. It was found that the polarizability and the second hyper-polarizability of trans polyacetylene are much larger than those obtained through quadratic extrapolation from oligomer polyenes, as shows the computational study starting from periodic boundary conditions is essentially important. VL - 7 IS - 1 ER -