高折光指数单体用于改善两阶段光聚合体系的全息记录性能。

High Refractive Index Monomers for Improving the Holographic Recording Performance of Two-Stage Photopolymers.

机构信息

Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China.

School of Chemical Science, University of Chinese Academy of Sciences, Beijing 100049, China.

出版信息

ACS Appl Mater Interfaces. 2023 May 24;15(20):24827-24835. doi: 10.1021/acsami.3c01446. Epub 2023 May 11.

DOI:10.1021/acsami.3c01446

PMID:37167544

Abstract

Photopolymers hold great promise for the preparation of transparent volume holographic gratings (VHG), which are core optical elements in many application fields. To improve the holographic recording property of a two-stage photopolymer, four new (meth)acrylate monomers (CTA, CTMA, CTBA, CTBMA) with high refractive indices (1.59-1.63) are designed and synthesized in this study. Using them as one writing monomer, a series of photopolymer samples with different formulations and thicknesses are fabricated for holographic recording. Among them, a formulation containing 9 wt % CTMA shows the best performance. Using it as a recording medium, a VHG with high resolution and diffraction efficiency is constructed. Its refractive index modulation reaches 0.046. Moreover, its total transmittance within 400-800 nm achieves 96.62% after photobleaching. The results indicate that the CTMA-based formulation has great application potential in developing high-performance transparent VHG.

摘要

光致聚合物在制备透明体全息光栅（VHG）方面具有很大的应用前景，VHG 是许多应用领域的核心光学元件。为了提高双阶段光致聚合物的全息记录性能，本研究设计并合成了四个具有高折射率（1.59-1.63）的新型（甲基）丙烯酸酯单体（CTA、CTMA、CTBA、CTBMA）。将它们用作一个写入单体，制备了一系列具有不同配方和厚度的光聚合样品用于全息记录。其中，含有 9wt%CTMA 的配方表现出最佳性能。使用它作为记录介质，构建了具有高分辨率和衍射效率的 VHG。其折射率调制达到 0.046。此外，在光漂白后，其在 400-800nm 范围内的总透过率达到 96.62%。结果表明，基于 CTMA 的配方在开发高性能透明 VHG 方面具有很大的应用潜力。