New Frontiers in Photochromism
New Frontiers in Photochromism
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DOI：
10.1007/978-4-431-54291-9
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
M. Irie;Y. Yokoyama;T. Seki
中科院分区：
文献类型：
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作者：
M. Irie;Y. Yokoyama;T. Seki
光致变色被定义为化学物质在具有通过光照射在一个或两个方向上诱导的不同吸收光谱的两种形式之间的可逆转变。光转化过程中的化学键重排会引起分子的电子和几何结构变化。几十年来，这个过程吸引了许多化学家和物理学家。光照射时可逆的分子结构变化可应用于各种光子器件，例如可擦除存储介质、光光开关组件和显示器件。为了在日本积累的顶级工作的基础上促进这一研究领域的活动，我们于 2007 年至 2011 年在日本文部科学省的支持下，在优先领域“光致变色新领域”（项目负责人 Masahiro Irie 和 58 名研究人员）开展了科学研究补助金 (Kakenhi) 项目。该研究项目不仅关注上述主要课题，还关注光致变色研究中尚未探索的前所未有的应用领域，如单晶的光驱动机械运动、固体材料表面性质的光修饰、聚合物微观结构的光操纵、手性性质的光控制以及多光子光致变色反应等。具体而言，确定并达到了以下研究目标： 1．提高分子的光致变色反应活性，最终达到100%量子产率反应性、100%立体选择性等性能。 2.寻找新型光致变色分子。目标分子之一是发色团，表现出非常快的光致变色-热脱色 3. 开发新的、前所未有的光响应特性，例如单晶的光驱动机械运动和表面特性的光改性
Photochromism is defined as a reversible transformation of a chemical species between two forms having different absorption spectra induced in one or both directions by photoirradiation. Chemical bond rearrangement during the phototransformation induces electronic as well as geometrical structure changes of the molecules. This process has captivated many chemists and physicists over several decades. The reversible molecular structure changes upon photoirradiation can be applied to various photonic devices, such as erasable memory media, photo-optical switch components, and display devices. To promote activities in this research field based on accumulated top-level work in Japan, we conducted a Grant-in-Aid for Scientific Research (Kakenhi) Project on the Priority Area “New Frontiers in Photochromism”(Masahiro Irie, project leader, and 58 researchers) from 2007 to 2011 supported by the Ministry of Education, Culture, Sports, Science and Technology, Japan. The research project focused not only on the above-mentioned primary subjects but also on unprecedented application fields that had not yet been explored in photochromism research, such as light-driven mechanical motion of single crystals, photomodification of surface properties of solid materials, photomanipulation of microstructures of polymers, photocontrol of chiral properties, and multiphoton photochromic reactions, among others. More specifically, the following research targets were established and attained:1. To improve the photochromic reactivity of molecules and ultimately achieve performances such as 100% quantum yield reactivity and 100% stereoselectivity 2. To search for new types of photochromic molecules. One of the target molecules is a chromophore exhibiting very fast photocoloration–thermal decoloration 3. To develop new, unprecedented photoresponsive properties such as light-driven mechanical motion of single crystals and photomodification of surface properties