FABRICATION OF ONE-DIMENSIONALLY ALIGNMENT-CONTROLLED ORGANIC NANO STRUCTURE AND CREATION OF ANISOTROPIC OPTO/ELECTRONIC DEVICES

一维取向控制有机纳米结构的制造和各向异性光学/电子器件的创建

• 批准号: 16360040
• 负责人: UEDA Yasukiyo
• 金额: $ 8.64万
• 依托单位: Kobe University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-16360040/
• 关键词: ORGANIC THIN FILM; ORIENTATION CONTROL; FRICTION TRANSFER; PHOTO-INDUCED ALIGNMENT; LOW DIMENSIONALITY; OPTICAL PROPERTY; ORGANIC FET; POLARIZED PL; LB膜; 液晶配向; フルオレンポリマー; 偏光LED; ポリアセン; 一次元配向; 有機FET; 偏向発光; フォトクロミズム

Organic thin films have high potential for next generation photoelectronic and photonic materials. Their physical properties heavily depend on the molecular orientation in the film. In this project, we aim to fabrication and characterization of low dimensional orientation-controlled organic thin films for electronic and photonic devices. Pentacene was vapor-deposited on a friction-transferred PTFE layer. The polarized absorption spectra of pentacene/PTFE double layer showed an anisotropic feature. Pentacene oriented uniaxially taking edge-on state on a PTFE layer. The electrical property of pentacene/PTFE double layer also indicated anisotropic feature. The field effect mobility along to the traverse of the friction direction was 4.2×10-1cm2/Vs. We succeeded in preparation of high performance organic FET films. Polarized polymer light-emitting diodes (PLEDs) have been constructed utilizing friction-transferred poly(9,9-dioctylhorene) (PFO) thin films. The friction transfer technique al … More lowed an oriented PFO to be deposited directly onto an indium tin oxide anode without an alignment layer such as polyimide. Polarized absorption and hotoluminescence spectra revealed that the polymer backbones are highly aligned in the friction direction. We fabricated PLEDs consisting of friction-transferred PFO as an emissive layer, vacuum-deposited bathocuproine as an electron transport and hole-blocking layer, and a vacuum-deposited LiF/A1 cathode. Highly polarized blue emission with an integrated polarization ratio of 31 and a luminance of up to 300 cd/m2 was observed from the PLEDs. Photo-induced molecular alignment behavior of azo dye derivative on a fused silica substrate prepared by spin-coating method was also investigated. When azo film was irradiated by linearly polarized UV light, the longitudinal direction of azo molecules aligned along the normal direction against to the polarization direction of irradiated UV light. The dichroic ratio of absorption intensity (I_⊥/I_<//>) of azo film after UV light irradiation was 6. Photo-induced alignment mechanism of azo molecule was explained by anisotropic diffusion model.Research results obtained in this project will be expected to contribute the creation of smart photoelectronic and electric devices with organic materials. Less

有机薄膜是下一代光电子和光子材料的重要组成部分。它们的物理性质在很大程度上取决于膜中的分子取向。在这个项目中，我们的目标是制造和表征低维取向控制的有机薄膜的电子和光子器件。并五苯气相沉积在摩擦转移的PTFE层上。并五苯/PTFE双层膜的偏振吸收光谱具有各向异性特征。并五苯在PTFE层上呈单轴取向的边对状态。并五苯/PTFE双层膜的电性能也呈现各向异性特征。沿沿着摩擦方向的场效应迁移率为4.2×10 ~（-1）cm ~ 2/Vs。利用摩擦转移的聚（9，9-二辛基芴）（PFO）薄膜制备了偏振聚合物发光二极管（PLED）。摩擦传递技术 ...更多信息 使取向PFO直接沉积到氧化铟锡阳极上，而不需要诸如聚酰亚胺的取向层。偏振吸收光谱和光致发光光谱表明，聚合物主链高度排列在摩擦方向。我们制作的PLED组成的摩擦转移PFO作为发射层，真空沉积浴铜灵作为电子传输和空穴阻挡层，和真空沉积的LiF/Al阴极。从PLED观察到具有31的积分偏振比和高达300 cd/m2的亮度的高度偏振的蓝色发射。研究了旋涂法制备的偶氮染料衍生物在熔融石英基底上的光诱导分子取向行为。当用线偏振光照射偶氮薄膜时，偶氮分子的纵向沿着垂直于紫外光偏振方向排列。紫外光照射后偶氮薄膜的吸收强度的二色性比（I_λ/I_</>）为6。利用各向异性扩散模型解释了偶氮分子的光致取向机理，本项目的研究成果将有助于有机材料智能光电器件的研制。少

项目成果

Reversible coloring/decoloring reaction of leuco dye controlled by long-chain molecule

• DOI: 10.1016/j.tsf.2007.04.085
• 发表时间: 2008-03-03
• 期刊: THIN SOLID FILMS
• 影响因子: 2.1
• 作者: Horiguchi, Takashi;Koshiba, Yasuko;Tsutsui, Kyoji
• 通讯作者: Tsutsui, Kyoji

J-aggregate Formation of Spiropyran Derivatives in LB and Vapor-deposited Thin Films

LB 和气相沉积薄膜中螺吡喃衍生物的 J 聚集体形成

• 发表时间: 2006
• 期刊: Molecular Crystals and Liquid Crystals Vol. 445
• 作者: Toshiyuki;Kakudate;Akira Murayama;Tomoharu Asano;Kouji Matsumoto
• 通讯作者: Kouji Matsumoto

Effects of growth conditions or structure of organosilane monolayers on SiO2 substrates

SiO2 基底上有机硅烷单层生长条件或结构的影响

• 发表时间: 2006
• 期刊: Mol. Cryst. Liq. Cryst. 445
• 作者: Noriyuki;Yoshimoto
• 通讯作者: Yoshimoto

Molecular Rearrangement and Change of Optical Properties of p-Sexiphenyl in Vacuum-deposited Film with Rubbing Technique

摩擦技术真空沉积膜中对六苯基的分子重排及其光学性质的变化

• 发表时间: 2005
• 期刊: Jpn. J. Appl. Phys. 44-6A
• 作者: Naofumi;Aoki
• 通讯作者: Aoki

摩擦転写法と後熱処理によるポリフルオレン単結晶様薄膜の作製

摩擦转移法及后热处理制备聚芴单晶薄膜

• 发表时间: 2004
• 期刊: 電子情報通信学会技術研究報告,OME 第60巻
• 作者: Naofumi Aoki;Naofumi Aoki;Masahiro Misaki;Masahiro Misaki;Masahiro Misaki;Hiroki Kihara;Naofumi Aoki;Kogiso M;Ikeda S;Yoshimoto N;Yoshimoto N;Kobayashi S;三崎 雅裕
• 通讯作者: 三崎 雅裕