Photochromism and photoinduced bond-structure change in the conjugated polymer polydiacetylene.
Photochromism and photoinduced bond-structure change in the conjugated polymer polydiacetylene.
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共轭聚合物聚二乙炔的光致变色和光致键结构变化。
DOI：
10.1103/physrevb.36.2913
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发表时间：
1987
期刊：
影响因子：
--
通讯作者：
Koda
中科院分区：
文献类型：
--
作者：
Tokura;Ishikawa;Kanetake;Koda
本文测量了PDA-（12，8）（聚丁二炔）薄膜在不同光子能量和光强下的光致吸收光谱变化。所观察到的光致变色行为表明，光激发的电子-空穴对在聚合物主链弛豫到亚稳态，发展成团簇的键结构的局部变化，通过温度无关的和自激活的多重激发过程中产生的光照射。
The photoinduced change in absorption spectra has been measured on PDA-(12, 8)(polydiacetylene) films for various photon energies and light intensities. The observed photochromic behaviors indicate that photoexcited electron-hole pairs in polymer backbone chains relax into a metastable state which develops into clusters with a local change in bond structure via a temperature-independent and self-activated multiple excitation process produced by light irradiation.