Preparation of Ultrathin Functional Organic Filsm using Liquid Jet Technique

液体喷射技术制备超薄功能有机薄膜

• 批准号: 07554035
• 负责人: SEKI Kazuhiko
• 金额: $ 4.35万
• 依托单位: Nagoya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07554035/
• 关键词: Functional Organic Materials; Ultrathin Films; Liquid Jet Technique; Clusters; J-Aggregates; Cyanine Dyes

An apparatus for fabricating ultrathin films of functional organic materials was designed and constructed based on the liquid jet technique, where a fine beam solution is injected into vacuum, developed by the group of Professor N.Nishi of Kyushu University. The organic material is dissolved in the solution as the solvent. This technique has an advantage of applicability to various large organic molecules.The apparatus consists of three vacuum chambers, low vacuum, medium vacuum, and high vacuum chmbers. At the low vacuum chamber, liquid jet is ejected through a fine stainless steel needle by a flow pump for liquid chromatography. The beam is split into many small particles when it is sprayd into vacuum, and the middle part of the beam is selected by a skimmer. In the medium vacuum chamber, the fine partcles are further broken by the internal pressure, forming many clusters. The cluster beam is again passed through a skimmer, and the selected part is allowed to fly in the high vaccum chamber to arrive at the substrate to form the thin film.The apparatus is designed following the guidance of Prof. Nishi, and constructed at Nagoya University. The vacuum test was completed, and some preliminary data was taken using rhodamin B as the sample material. The effect of the temperature of the ejection nozzle, flow rate of the solution, and the solvent (water and ethanol) were examined. The prepared films were examined by polarized microscope, visible absorption spectra, and fluorescence spectra. Depending on the conditions, various films containing fine particles to small crystals were formed. The next step should be the formation of J-aggregates using cyanine dyes.

基于九州大学N.Nishi教授的小组开发的液体喷射技术，设计并构建了用于制造功能有机材料的纳米薄膜的装置，其中将精细束溶液注入真空中。有机材料作为溶剂溶解在溶液中。该装置由低真空、中真空和高真空三个真空室组成。在低真空室中，液体射流通过用于液相色谱的流动泵通过细不锈钢针喷射。当光束被喷射到真空中时，光束被分裂成许多小颗粒，光束的中间部分被撇除器选择。在中等真空室中，细小颗粒被内部压力进一步破碎，形成许多团簇。束团束再次通过一个撇除器，并允许所选择的部分在高真空室中飞行，以到达衬底形成薄膜。该装置是根据西教授的指导设计的，并在名古屋大学建造。以罗丹明B为样品材料，进行了真空试验，并取得了一些初步数据。研究了喷嘴温度、溶液流速和溶剂（水和乙醇）的影响。用偏光显微镜、可见吸收光谱和荧光光谱对薄膜进行了表征。根据条件，形成包含细颗粒到小晶体的各种膜。下一步应该是使用花青染料形成J-聚集体。