Poled polymers and their nonlinear optics

Yu, Longjiao; Wang, Yixuan; Zhan, Siqi; Chen, Donghe; Wang, Shiwei; Zhang, Mingyao

doi:10.1039/d2tc03917f

Cited by 9 publications

(9 citation statements)

References 121 publications

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“…Based on various binding methods of polymer skeletons and chromophore molecules, Figure 9c presents several common types of organic poled polymers, including a guest−host polymer, a main/side chain polymer, a cross-linked polymer, a dendrimer, and a hyperbranched polymer. 149 Among them, dendrimers and hyperbranched polymers can tailor chromophore shapes and intermolecular interactions by altering the number density of chromophores to obtain the optimal macroscopic electrooptical activity. Nevertheless, the intermolecular dipole−dipole electrostatic interaction increases with the mass fraction of chromophores in the polymer, leading to a chromophore centrosymmetric arrangement and reduced poling efficiency.…”

Section: Nonlinear Optical Applicationsmentioning

confidence: 99%

“…Organic poled polymers are composed of a polymer substrate and an active chromophore molecule. Based on various binding methods of polymer skeletons and chromophore molecules, Figure c presents several common types of organic poled polymers, including a guest–host polymer, a main/side chain polymer, a cross-linked polymer, a dendrimer, and a hyperbranched polymer . Among them, dendrimers and hyperbranched polymers can tailor chromophore shapes and intermolecular interactions by altering the number density of chromophores to obtain the optimal macroscopic electro-optical activity.…”

Section: Nonlinear Optical Applicationsmentioning

confidence: 99%

“…Among them, dendrimers and hyperbranched polymers can tailor chromophore shapes and intermolecular interactions by altering the number density of chromophores to obtain the optimal macroscopic electro-optical activity. Nevertheless, the intermolecular dipole–dipole electrostatic interaction increases with the mass fraction of chromophores in the polymer, leading to a chromophore centrosymmetric arrangement and reduced poling efficiency. , Hence, an important research direction in the poled polymers is to make the chromophores well aligned in the noncentrosymmetric arrangement and keep them as highly poled as possible to generate a high NLO coefficient. Currently, electric field poling (EP) is the most successful approach to cause the directional arrangement of chromophores.…”

Section: Nonlinear Optical Applicationsmentioning

confidence: 99%

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Recent Advances in the Asymmetric Growth of Organic Polar Crystals: A Review

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Section: Nonlinear Optical Applicationsmentioning

confidence: 99%

Section: Nonlinear Optical Applicationsmentioning

confidence: 99%

Section: Nonlinear Optical Applicationsmentioning

confidence: 99%

See 1 more Smart Citation

Recent Advances in the Asymmetric Growth of Organic Polar Crystals: A Review

Cen,

Li,

Wei

et al. 2023

Crystal Growth & Design

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“…[38] If the electrostatic interactions between molecules can be ignored, the electro-optic coefficient of the chromophore is proportional to the number density of the chromophore, the first-order hyperpolarization of the molecule, and the poling electric field. [39] However, chromophore molecules have significant dipole-dipole interactions, which can hinder the molecular rotation under the action of an electric field. So introducing steric hindrance groups into chromophores can effectively improve the poling efficiency of chromophores.…”

Section: Testing Of Electro-optical Coefficientsmentioning

confidence: 99%

Highly Efficient and Stable Binary Cross‐Linkable/ Self‐Assembled Organic Nonlinear Optical Molecular Glasses

Zhang,

Liu,

Yang

et al. 2023

Advanced Science

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The development of electro‐optical materials with high chromophore loading levels that possess ultrahigh electro‐optic coefficients and high long term alignment stability is a challenging topic. Anthracene‐maleimide Diels–Alder (DA) reaction and π–π interaction of Anthracene‐pentafluorobenzene and benzene‐pentafluorobenzene are developed for making highly efficient binary cross‐linkable/self‐assembled dendritic chromophores FZL1‐FZL4. A covalently or non‐covalently cross‐linked network is formed by DA reaction or π–π interaction after electric field poling orientation, which greatly improves the long‐term alignment stability of the materials. An electro‐optic coefficient up to 266 pm V−1 and glass transition temperature as high as 178 °C are achieved in cross‐linked film FZL1/FZL2, and 272–308 pm V−1 is achieved for self‐assembled films FZL1/FZL4 and FZL3/FZL4 due to high chromophore density (3.09–4.02 × 1020 molecules cm−3). Long‐term alignment stability tests show that after heating at 85 °C for over 500 h, 99.73% of the initial r33 value is maintained for poled crosslinked electro‐optic films 1:1 FZL1/FZL2. The poled self‐assembled electro‐optic films 1:1 FZL1/FZL4 and 1:1 FZL3/FZL4 can still maintain more than 97.11% and 98.23%, respectively, of the original electro‐optic coefficient after being placed at room temperature for 500 h. The excellent electro‐optic coefficient and stability of the material indicate the practical application prospects of organic electro‐optic materials.

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“…Hyperbranched polymers that can be used as optical materials have attracted much attention in the field of optical devices in recent years due to their facile preparation, excellent solubility, and desirable thermal and optical properties. [1][2][3][4][5][6] Fluorinated hyperbranched linear long chain segment poly (amide-imide), as one of the hyperbranched polymers, has a number of advantages. First, the free volume, solubility, and hydrophobicity of these polymers are enhanced due to the introduction of fluorine.…”

Section: Introductionmentioning

confidence: 99%