Crystallization-driven tuneable lasing of perylene doped into the nematic liquid crystal

IF 5.4 1区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY GIANT Pub Date : 2024-05-09 DOI:10.1016/j.giant.2024.100279
Alina Szukalska , Andrzej Zak , Ewa Chrzumnicka , Anna Gibas , Agnieszka Baszczuk , Jaroslaw Mysliwiec
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Abstract

Versatile devices with tunable capabilities for controlling lasing wavelength and intensity are in high demand. Liquid crystals (LCs) exhibit immense potential for such applications, offering fine-tuning possibilities through external factors. On the other hand, laser technology is currently a research hotspot in optoelectronics, and also in practical applications. The recent market introduction of laser television marks a significant stride toward making such advanced technology accessible in every household. In synergy with laser pumping, the LCs unquestionably can be rediscovered. This study presents a comprehensive investigation into the crystallization phenomenon within a host-guest device, compact in size, free from moving parts, and integrating the liquid crystalline (LC) matrix doped with 3,4,9,10-tetra-(3-alcoxy-carbonyl)-perylene (THCP) dye. The focus lies in examining the influence of varying dye concentrations on multicolor fluorescence, lasing behavior, and device morphology. The systematic analysis of Random Lasing (RL) energy thresholds and the impact of DC voltage on light intensity modulation is demonstrated. Morphological changes were monitored in real-time using optical microscopy techniques, including crossed polarizer, and fluorescence imaging under 450 nm excitation. Utilizing advanced Transmission Electron Microscopy (TEM) techniques, we explore exceptional insights into our set of devices, providing novel information about the THCP crystallization process for the first time in the literature. To gain a comprehensive understanding of the crystal forming and molecular geometry we examined additionally the THCP dye, using X-ray diffraction and Raman spectroscopy. Furthermore, we showcase that varying the pumping energy enables multicolor tuning in the fabricated systems, presenting an attractive feature in the context of laser display technologies.

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掺入向列液晶的珀烯的结晶驱动型可调激光
目前,市场对具有可调光波长和强度功能的多功能设备需求量很大。液晶(LC)在此类应用中展现出巨大的潜力,可通过外部因素进行微调。另一方面,激光技术是当前光电子学和实际应用的研究热点。最近市场上推出的激光电视标志着在实现家家户户都能使用这种先进技术方面迈出了一大步。在激光泵浦的协同作用下,低电平无疑可以被重新发现。本研究全面探究了在一个体积小巧、无活动部件、集成了掺杂 3,4,9,10-四(3-羰基-alcoxy-carbonyl)-perylene(THCP)染料的液晶(LC)基质的主客设备中的结晶现象。重点在于研究不同浓度的染料对多色荧光、激光行为和器件形态的影响。系统分析了随机激光(RL)能量阈值以及直流电压对光强调制的影响。利用光学显微镜技术,包括交叉偏振器和 450 纳米激发下的荧光成像,对形态变化进行了实时监测。利用先进的透射电子显微镜(TEM)技术,我们对这套器件进行了深入研究,首次在文献中提供了有关 THCP 结晶过程的新信息。为了全面了解晶体形成和分子几何形状,我们还使用 X 射线衍射和拉曼光谱对 THCP 染料进行了研究。此外,我们还展示了通过改变泵浦能量可以在制造的系统中实现多色调谐,这在激光显示技术方面是一个极具吸引力的特性。
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来源期刊
GIANT
GIANT Multiple-
CiteScore
8.50
自引率
8.60%
发文量
46
审稿时长
42 days
期刊介绍: Giant is an interdisciplinary title focusing on fundamental and applied macromolecular science spanning all chemistry, physics, biology, and materials aspects of the field in the broadest sense. Key areas covered include macromolecular chemistry, supramolecular assembly, multiscale and multifunctional materials, organic-inorganic hybrid materials, biophysics, biomimetics and surface science. Core topics range from developments in synthesis, characterisation and assembly towards creating uniformly sized precision macromolecules with tailored properties, to the design and assembly of nanostructured materials in multiple dimensions, and further to the study of smart or living designer materials with tuneable multiscale properties.
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