Intermolecular Charge-Transfer Interactions Facilitate Two-Photon Absorption in Styrylpyridine-Tetracyanobenzene Cocrystals
Intermolecular Charge-Transfer Interactions Facilitate Two-Photon Absorption in Styrylpyridine-Tetracyanobenzene Cocrystals
复制标题
分子间电荷转移相互作用促进苯乙烯吡啶-四氰基苯共晶中的双光子吸收
DOI：
10.1002/anie.201703439
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发表时间：
2017
影响因子：
16.6
通讯作者：
Hu Wenping
中科院分区：
文献类型：
--
作者：
Sun Lingjie;Zhu Weigang;Wang Wei;Yang Fangxu;Zhang Congcong;Wang Shufeng;Zhang Xiaotao;Li Rongjin;Dong Huanli;Hu Wenping
采用超分子自组装法制备了4 -苯基吡啶和1,2,4,5 -四苯基苯共晶。分子组分之间的供体-受体相互作用是自组装的主要驱动力，并有助于分子间的电荷转移。共晶具有双光子吸收特性，这在单个组分中是观察不到的；提示双光子吸收来源于供体-受体系统中的分子间电荷转移相互作用。多色团系统中双光子吸收的起源仍在研究中；因此，该系统提供了一个罕见的双光子共结晶吸收的演示。共晶工程可以促进非线性光学和光电子应用新材料的进一步设计和开发。
Cocrystals of 4‐styrylpyridine and 1,2,4,5‐tetracyanobenzene were successfully prepared by supramolecular self‐assembly. Donor–acceptor interactions between the molecular components are the main driving force for self‐assembly and contribute to intermolecular charge transfer. The cocrystals possess two‐photon absorption properties that are not observed in the individual components; suggesting that two‐photon absorption originates from intermolecular charge‐transfer interactions in the donor–acceptor system. The origin of two‐photon absorption in multichromophore systems remains under‐researched; thus, the system offers a rare demonstration of two‐photon absorption by cocrystallization. Cocrystal engineering may facilitate further design and development of novel materials for nonlinear optical and optoelectronic applications.