Highly efficient photodimerization of the olefin in a nanotemplate on HOPG by scanning tunneling microscopy
Highly efficient photodimerization of the olefin in a nanotemplate on HOPG by scanning tunneling microscopy
复制标题
通过扫描隧道显微镜对 HOPG 上纳米模板中的烯烃进行高效光二聚
DOI：
10.1039/c4cp04154b
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
Chen Wang
中科院分区：
文献类型：
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作者：
Jin-Dong Xue;Jing Xu;FangYun Hu;LingYan Liao;Min Li;WuBiao Duan;Qing-Dao Zeng;Chen Wang
表面上高效的光化学反应对于其在光电子器件中的潜在应用具有重要意义。在这项工作中，一个由两个反式-1，2-双（4-吡啶基）乙烯（4，4 ′-bpe）和两个辛酸分子通过N-H-O氢键之间的烯烃共晶体的高效光二聚反应在高取向热解石墨（HOPG）表面上的纳米模板中实现。在紫外光照射下，4，4 ′-Bpe分子首先在HOPG纳米模板中发生反式-顺式异构化，然后发生[2 + 2]光二聚化。在纳米模板存在下的异构化以及光二聚的效率比在其不存在下的效率高得多。这些结果提供了一种简便的方法，以实现高效率的光二聚烯烃在表面上的大规模。
Efficient photochemical reactions on a surface are of great importance for their potential applications in optoelectronic devices. In this work, a highly efficient photodimerization reaction of an olefin cocrystal built from two trans-1,2-bis(4-pyridyl)ethylenes (4,4′-bpe) and two isophthalic acid molecules via N⋯H–O hydrogen bonds in between was achieved in a nanotemplate on a highly oriented pyrolytic graphite (HOPG) surface. 4,4′-Bpe molecules first undergo the trans–cis isomerization followed by [2+2] photodimerization in the nanotemplate on HOPG upon UV irradiation. The efficiency of the isomerization as well as the photodimerization in the presence of the nanotemplate is much higher than that in its absence. These results provide a facile way to achieve highly efficient photodimerization of olefins on a large scale on surfaces.