Single-Molecule Optical Memory using High-performance Photochromic Diarylethenes

使用高性能光致变色二芳基乙烯的单分子光学存储器

基本信息

批准号：
15105006
负责人：
IRIE Masahiro
金额：
$ 60.49万
依托单位：
Rikkyo University (2007)Kyushu University (2003-2006)
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (S)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2007
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15105006/
关键词：
Single-molecule spectroscopy Photochromism Fluorescence Diarylethene Confocal microscope 単一分子測定

项目摘要

The ultimate goal of optical memory is to store optical information in each molecule. As the first step to the single-molecule optical memory, we carried out the synthesis of fluorescent photochromic molecules suitable for the optical memory and measured the photo-switching of fluorescence from the single molecules. The photochromic molecule should exhibit the following performance ; high photo-switching efficiency, a fatigue resistant property and a high fluorescent quantum yield. It is also required to reveal the detailed mechanism of single-molecule photochemistry. The results are as follows.(1) Fluorescent photochromic molecules having a fluorescent anthracene or perylene unit and a photochromic diarylethene unit were synthesized. When the two units are connected by an adamantyl group, the molecules exhibit efficient photo-switching performance and high fluorescent quantum yields. Molecules which show electron-transfer fluorescent quenching were also prepared.(2) The above newly synthesized molecules were dispersed in various polymer matrices and the photo-switching of fluorescence from the single molecules was measured. The fluorescence showed a digital photo-switching in two states and the response times(on and off times) were found to show a broad distribution. The distribution of the response times was studied theoretically in detail and attributed to local minima in both ground and excited energy diagrams. This finding surely provides a new insight into the photochemistry in polymer matrices.

光存储器的最终目标是在每个分子中存储光学信息。作为单分子光存储器的第一步，我们合成了适合光存储器的荧光光致变色分子，并测量了单分子荧光的光开关。光致变色分子应表现出以下性能；高光开关效率、抗疲劳性能和高荧光量子产率。还需要揭示单分子光化学的详细机制。结果如下： (1)合成了具有荧光蒽或苝单元和光致变色二芳基乙烯单元的荧光光致变色分子。当两个单元通过金刚烷基连接时，分子表现出高效的光开关性能和高荧光量子产率。还制备了显示电子转移荧光猝灭的分子。(2)将上述新合成的分子分散在各种聚合物基质中，并测量了单分子荧光的光开关。荧光显示出两种状态下的数字光切换，并且响应时间（开启和关闭时间）显示出广泛的分布。从理论上详细研究了响应时间的分布，并将其归因于基能图和激发能图中的局部最小值。这一发现无疑为聚合物基质中的光化学提供了新的见解。

项目成果

期刊论文数量（212）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Full-color photochromism of a fused dithienylethene trimer

DOI：
10.1021/ja051467i
发表时间：
2005-06-29
期刊：
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
影响因子：
15
作者：
Higashiguchi, K;Matsuda, K;Irie, M
通讯作者：
Irie, M

Photostimulated Crystal Lattice Change Induced by the Photochemical Ring-Opening Reaction of Diarylethene Molecules

二芳基乙烯分子光化学开环反应引起的光刺激晶格变化

DOI：
发表时间：
2007
期刊：
Bull. Chem. Soc. Jpn. 80(2)
影响因子：
0
作者：
T.Hamazaki;K.Matsuda;S.Kobatake;M.Irie
通讯作者：
M.Irie

Photochromism of Diarylethene-capped Gold Nanoparticles

二芳基乙烯封端的金纳米粒子的光致变色

DOI：
发表时间：
2004
期刊：
Chem.Lett. 33,(4)
影响因子：
0
作者：
K.Matsuda;K.Higashiguchi;N.Tanifuji;K.Higashiguchi;K.Matsuda
通讯作者：
K.Matsuda

Anisotropic Translational Diffusion of Single Fluorescent Perylene Molecules in a Nematic Liquid Crystal

向列液晶中单个荧光苝分子的各向异性平移扩散

DOI：
发表时间：
2004
期刊：
CHEMPHYSCHEM 5
影响因子：
0
作者：
田中慎一;菅野誉士;川合知二(分担執筆);Winadda Wongwiriyapan;Takashi Ikuno;Katsunori Aoki;Chih-Wei Chang;Takashi Ikuno;Takashi Ikuno;Takashi Ikuno;Takashi Ikuno;Takashi Ikuno;Winadda Wongwiriyapan;Shinya Yoshimoto;Masaru Kishida;Winadda Wongwiriyapan;Takashi Ikuno;Takashi Ikuno;Rei Hobara;Shin-ichi Honda;Mitsuhiro Katayama;太田心平;太田心平;太田心平;太田心平;太田心平;T.Fukaminato et al.;T.Fukaminato et al.;N.Soh et al.;T.Fukaminato et al.;T.Kawai et al.
通讯作者：
T.Kawai et al.

Photochromic properties of diarylethenes having 2,4-diphenylphenyl substituents in the amorphous and PMMA films

无定形薄膜和 PMMA 薄膜中具有 2,4-二苯基苯基取代基的二芳基乙烯的光致变色性能