Highly sensitive time-resolved fluorescence measurements of ultra-thin films upon guided wave mode or surface plasmon resonance excitation and applications

导波模式或表面等离子体共振激发下超薄膜的高灵敏度时间分辨荧光测量及应用

• 批准号: 14205122
• 负责人: NAGAMURA Toshihiko
• 金额: $ 35.03万
• 依托单位: Kyushu University (2003-2005)Shizuoka University (2002)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14205122/
• 关键词: Nano materials; Fluorescence lifetime; Surface plasmon resonance; Polymer properties; Guided wave mode; 酸化還元クロモフォア; 高分子化合物; ESRスペクトル; 光通信波長域での吸収制御; イオン対間光誘起電子移動; フェムト秒パルス; 導波モード薄膜; 電場増強エバネッセント光; DNA誘導体超薄膜; 蛍光の超高感度計測; 高性能ガスセンシング; 電子移動消光; 有

We have achieved highly sensitive time-resolved fluorescence measurements of ultra-thin films upon guided wave mode or surface plasmon resonance excitation and their applications to chemical sensing, molecular photonics and non-contact evaluation of molecular motion in very thin polymer films. Major achievements are as follows :1.A novel time-resolved fluorescence measurement system was developed by using enhanced evanescent light at surface plasmon resonance (SPR) or guided wave mode (GWM) as an excitation light source.2.We demonstrated that highly sensitive, fast responsive and highly reversible sensing of nitrogen dioxide, nitric oxide, and nitrous oxide at a ppm-to-sub-ppm level has been achieved by fluorescence measurements upon excitation of various dye-doped deoxyribonucleic acid (DNA) and hydrophobic DNA thin films spin-coated on a thin silver film by electric field enhanced evanescent light at SPR.3.Ultrafast and large absorption change in the optical telecommunication wavelen … More gth region was achieved in solid films by making transitory expansion of a π-electronic system with photoinduced electron transfer and reverse reactions between redox-active ion pairs. This polymer film may be applied to terahertz all optical information processing in the telecommunication system.4.Fluorescence lifetimes of dyes dispersed in ultrathin films of poly(vinyl alcohol) or polytricyclodecane were examined by GWM or SPR excitation. The fluorescent behavior of the dyes at interface or surface of ultrathin films was strongly suggested to be different from that in the bulk state.5.Highly sensitive ultrafast all-optical light modulation was proposed on the basis of photoinduced complex refractive-index changes in composite GWM geometry composed of a low-refractive-index polymer and a photoresponsive polymer. The present device can give highly enhanced changes of probe light as compared with simple transmission-type devices or the GWM geometry in a metal thin film. A photoelectrochromic polymer (shown above 3) was employed in this geometry to demonstrate ultrafast reflectance control upon femtosecond laser excitation. Less

我们已经实现了高灵敏度的时间分辨荧光测量的超薄膜导波模式或表面等离子体共振激发及其应用化学传感，分子光子学和非接触评价分子运动在非常薄的聚合物薄膜。主要研究成果如下：1.利用表面等离子体共振（SPR）或导波模式（GWM）的增强倏逝光作为激发光源，建立了一种新型的时间分辨荧光测量系统。2.利用电场增强倏逝光激发旋涂在银膜上的各种染料掺杂的脱氧核糖核酸（DNA）和疏水性DNA薄膜，实现了高灵敏度、快速响应和高可逆的ppm ~亚ppm量级的二氧化氮、一氧化氮和一氧化二氮的荧光测量。3.利用电场增强倏逝光激发旋涂在银膜上的各种DNA薄膜，实现了对NO2、NO和N2 O的高灵敏度、快速响应和高可逆的时间分辨荧光传感。4.利用电场增强倏逝光激发旋涂在银膜上的各种DNA薄膜，实现了对NO2、NO和N2 O的高灵敏度、快速响应和高可逆的时间分辨荧光传感。5.利用电场增强倏逝光激发旋涂在银膜上的DNA薄膜，实现了对NO2、NO和N2 O的高灵敏度、高响应 ...更多信息 通过光诱导电子转移和氧化还原活性离子对之间的逆反应，使π电子系统瞬时膨胀，在固体膜中实现了gth区。该聚合物薄膜可应用于电信系统中的太赫兹全光信息处理。4.采用GWM和SPR激发方法研究了分散在聚乙烯醇和聚三环癸烷薄膜中的染料的荧光寿命。染料在薄膜界面或表面的荧光行为明显不同于体相状态。5.基于由低折射率聚合物和光敏聚合物组成的复合GWM几何结构的光致复折射率变化，提出了高灵敏度的超快全光调制。与简单的透射型器件或金属薄膜中的GWM几何结构相比，本器件可以给出高度增强的探测光变化。光电致变色聚合物（如上文3所示）用于该几何形状以证明在飞秒激光激发时的超快反射率控制。少

项目成果

Molecular Photonics by Femtosecond Laser

飞秒激光分子光子学

• 发表时间: 2003
• 期刊: Molecular Crystals and Liquid Crystals 406
• 作者: 元木健太郎;山中浩明;瀬尾和大;Nagamura et al.
• 通讯作者: Nagamura et al.

長村利彦: "色素含有高分子薄膜の光励起超高速複素屈折率変化に基づく分子フォトニクス"高分子. 51(12). 948-951 (2002)

Toshihiko Nagamura：“基于含染料聚合物薄膜的光激发超快复折射率变化的分子光子学”Kobunshi 51(12) (2002)。

All-optical reflectance control based on photoinduced complex refractive index changes in guided mode thin films containing Indium or gallium phthalocyanines

基于含铟或镓酞菁的导模薄膜光致复折射率变化的全光反射率控制

• 发表时间: 2002
• 期刊: Journal of Nonlinear Optical Physics and Materials 11・3
• 作者: Mayumi Hayakawa;Naoe Nishihara;Masaoki Haneda;Asako Tanaka;Shin-ichi Tanabe;Nagamura et al.
• 通讯作者: Nagamura et al.

Materials and devices for ultrafast all-optical processing

用于超快全光处理的材料和器件

• 发表时间: 2005
• 期刊: Proceedings of SPIE 5724
• 作者: Y.Takata;S.Hidaka;M.Kohno;高田保之(分担執筆);長村利彦;Jang-Hyun Ryu;Keiji Tanaka;Jang-Hyun Ryu;Toshihiko Nagamura;Ryuji Matsumoto;長村利彦;Toshihiko Nagamura
• 通讯作者: Toshihiko Nagamura

有機エレクトロニクス・フォトニクス材料とデバイス…21世紀情報産業の新たな展開をめざして…

有机电子/光子材料与器件...瞄准21世纪信息产业新发展...

• 发表时间: 2003
• 作者: Naoe Nishihara;Shin-ichi Tanabe;A.Soibel;Y.Ono;長村利彦
• 通讯作者: 長村利彦