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Design and synthesis of novel H-Shaped chromophore for enhanced nonlinear optical properties

Xu, Huajun ; Liu, Fenggang ; Chen, Shujie ; Shi, Wenjing ; Xie, Zhipeng ; Wang, Jianwu ; Zhai, Zhaofen ; Liu, Jianpeng ; Li, Han ; Wang, Jiahai

Dyes and pigments, 2019-06, Vol.165, p.144-150 [Periódico revisado por pares]

Elsevier Ltd

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  • Título:
    Design and synthesis of novel H-Shaped chromophore for enhanced nonlinear optical properties
  • Autor: Xu, Huajun ; Liu, Fenggang ; Chen, Shujie ; Shi, Wenjing ; Xie, Zhipeng ; Wang, Jianwu ; Zhai, Zhaofen ; Liu, Jianpeng ; Li, Han ; Wang, Jiahai
  • Assuntos: Chromophore ; Electro-optic ; H-shape ; Isolation group ; Nonlinear optics
  • É parte de: Dyes and pigments, 2019-06, Vol.165, p.144-150
  • Descrição: A novel H-shaped nonlinear optical chromophore B based on julolidinyl donors were designed and synthesized through Williamson ether reaction. The chromophore B is composed of two traditional rod-shaped chromophores A linked to each other through an isolation group, forcing chromophore separation through steric interaction. Chromophore B showed good thermal stability and film-forming ability. Besides, the reduction of intermolecular electrostatic interactions allows for increased active chromophore number density in the formulation of a host-guest doping material, thus enhancing electro-optic response. Polymers doped with 35 wt% chromophore B have been poled to afford large electro-optic coefficient (r33) of 180 pm/V at 1310 nm, which is nearly two times higher than that obtained from the chromophore A (92 pm/V) at the doping concentration of 25 wt%. These results indicated that the H-shaped chromophore B has the advantages over rod-shaped chromophore A in transforming the microscopic hyperpolarizability into a macroscopic electro-optic coefficient. [Display omitted] •Two chromophores A and B with rod-like and H-shaped configurations had been synthesized.•The decomposition temperatures of chromophores A and B are higher than 230 °C.•The electro-optic coefficient of film-B/PMMA is 180 pm/V at 1.31 μm.
  • Editor: Elsevier Ltd
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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