Photoaddressable Polymers for Optical Data Storage
Photoaddressable Polymers for Optical Data Storage
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DOI：
10.1002/1521-4095(200112)13:23
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发表时间：
2001-12
影响因子：
29.4
通讯作者：
R. Hagen;T. Bieringer
中科院分区：
文献类型：
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作者：
R. Hagen;T. Bieringer
光寻址聚合物（PAP）是一种具有偶氮苯生色团和介晶侧基功能化的侧链共聚物体系。它们在用偏振光照射后显示出非常大的双折射值。所涉及的分子机制是偶氮侧基的光诱导异构化循环，其诱导强分子重新取向（光吸收偶氮苯发色团和非吸收介晶基团的协同运动）。由于其光致双折射的长期和高温稳定性，PAP是非常有前途的光学数据存储应用，如大容量DVD和全息存储器的记录材料。
Photoaddressable polymers (PAPs) are side-chain copolymer systems functionalized with azobenzene chromophores and mesogenic side groups. They show very large birefringence values after illumination with polarized light. The molecular mechanisms involved are photoinduced isomerization cycles of the azo side groups, which induce strong molecular reorientations (cooperative motion of light-absorbing azobenzene chromophores and non-absorbing mesogenic groups). Due to the long-term and high-temperature stability of their light-induced birefringence, PAPs are very promising recording materials for optical data storage applications such as high-capacity DVDs and holographic memory.