Synthesis and characterization of dendritic nonlinear optical chromophores based on double-donor structures and isolation groups

IF 4.2 3区工程技术 Q2 CHEMISTRY, APPLIED Dyes and Pigments Pub Date : 2024-12-15 DOI:10.1016/j.dyepig.2024.112602

Zhihan Huang, Youling Chen, Enle Zhu, Shuhui Feng, Yu Zhang, Chuying Liu, Fenggang Liu, Jiahai Wang

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Abstract

Two dendritic nonlinear optical chromophores A-B based on the bis(3-hydroxypiperidin)aniline and bis(N-ethyl-N-hydroxyethyl)aniline donors and three 3,5-bis(benzyloxy)benzoic acid derivative isolation groups were designed and synthesized. The UV absorption, density functional theory (DFT) calculations, thermal stability, and electro-optic activity of these chromophores were systematically investigated in this article. The chromophores A-B exhibited good thermal stability at decomposition temperatures (T_d) greater than 260 °C. Most importantly, steric hindrance groups could effectively reduce dipole-dipole interactions between molecules and improve the conversion efficiency of the first-order hyperpolarizability (β) of chromophores into large electro-optic (EO) coefficients (r₃₃). A large r₃₃ value of 236 p.m./V have been achieved for chromophore B. And the poling efficiency (2.79 ± 0.08 nm²/V²) of Chromophore B at 1310 nm was much higher than that of chromophore with single donor with similar structure.

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基于双给体结构和隔离基团的树状非线性光学发色团的合成与表征

设计并合成了两个基于双（3-羟基吡啶）苯胺和双（n -乙基- n -羟乙基）苯胺给体和三个3,5-双（苯氧基）苯甲酸衍生物分离基的树状非线性光学发色团A-B。本文系统地研究了这些发色团的紫外吸收、密度泛函理论（DFT）计算、热稳定性和电光活性。发色团A-B在260℃以上的分解温度下表现出良好的热稳定性。最重要的是，位阻基团可以有效地减少分子间的偶极-偶极相互作用，提高发色团的一阶超极化率（β）向大电光（EO）系数的转化效率（r33）。B在1310 nm处的极化效率（2.79±0.08 nm2/V2）远高于结构相似的单一供体。

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来源期刊

Dyes and Pigments 工程技术-材料科学：纺织

CiteScore

8.20

自引率

13.30%

发文量

933

审稿时长

33 days

期刊介绍： Dyes and Pigments covers the scientific and technical aspects of the chemistry and physics of dyes, pigments and their intermediates. Emphasis is placed on the properties of the colouring matters themselves rather than on their applications or the system in which they may be applied. Thus the journal accepts research and review papers on the synthesis of dyes, pigments and intermediates, their physical or chemical properties, e.g. spectroscopic, surface, solution or solid state characteristics, the physical aspects of their preparation, e.g. precipitation, nucleation and growth, crystal formation, liquid crystalline characteristics, their photochemical, ecological or biological properties and the relationship between colour and chemical constitution. However, papers are considered which deal with the more fundamental aspects of colourant application and of the interactions of colourants with substrates or media. The journal will interest a wide variety of workers in a range of disciplines whose work involves dyes, pigments and their intermediates, and provides a platform for investigators with common interests but diverse fields of activity such as cosmetics, reprographics, dye and pigment synthesis, medical research, polymers, etc.