|把刚发的一片文章贴出来， 感谢 Metalcarbene， 半年前做 third-year talk 的时候向他借过两本书， 那时候给他说下一片文章出来的时候作为答谢， 没想到一拖就是半年， 审稿人很慢， 意见很多， 很难伺候； 合成的时候本来想把所有的芳香环连起来， 做成一个大的共扼体, 可惜试了十几次反应都没有成功， 如果成功了也许可以做一个JACS 的topic, 看到的朋友也许可以给我一些意见， 有很多朋友肯定有经验关于 Mullen 环的合成， 不过如果没有 N－杂环的反应－－纯苯环的，都是相当容易的； 如果有建议， 谢谢告诉我一下 。 有一个感慨， 在国外发文章其实很不容易的， 加上老板要求也很高， 每一篇文章都要讲一个完整的 story, 可能这样对我们以后会很有好处吧。 祝愿大家多发好文章， 好好工作，好好生活。 |
http://pubs.acs.org/cgi-bin/abst ... /abs/ic700947g.html
Synthesis and Structural Characterization of a New Vapochromic Pt(II) Complex Based on the 1-Terpyridyl-2,3,4,5,6-pentaphenylbenzene (TPPPB) Ligand
Pingwu Du, Jacob Schneider, William W. Brennessel, and Richard Eisenberg*
Department of Chemistry, University of Rochester, Rochester, New York 14627
Received May 16, 2007 ASAP article
Web Release Date: December 5, 2007
A novel terpyridine ligand containing a pentaphenylphenyl moiety linked to the terpyridyl core (1-terpyridyl-2,3,4,5,6-pentaphenyl-benzene (TPPPB)) has been synthesized in good yield and reacted with Pt(DMSO)2Cl2, to produce the cationic complex [Pt(TPPPB)Cl]Cl (5). 5 was studied structurally and spectroscopically. It is observed to be brightly luminescent in the solid state at room temperature and at 77 K, with no change in emmax. The complex exhibits reversible vapochromic behavior upon exposure to methylene chloride vapors, changing color from red (5-R) to green (5-G). The shift to higher energy in the emission maximum from 654 to 514 nm is the largest vapochromic shift (140 nm) yet reported. The [Pt(TPPPB)Cl]Cl complex exhibits high selectivity for certain volatile organic compounds (VOCs) including methylene chloride, ethanol, ethyl acetate, and acetonitrile. The crystal structures of both the green and red forms have been determined by single-crystal X-ray diffraction. In both forms, the cationic Pt(II) complex possesses the anticipated square-planar coordination geometry that is distorted as a consequence of constraints from the terpyridyl binding. Analysis of the crystal packing of the green form (5-G) reveals the presence of non-interacting Pt···Pt separations with distances of 3.9092(9) and 4.5483(11) Å and a zigzag arrangement between neighboring Pt(II) ions. The red form (5-R) contains complexes that are stacked with Pt···Pt separations of 3.2981(14) and 3.3427(14) Å, indicative of metallophilic interaction. The change in the emitting state, as a consequence of the effect of the volatile organic compounds, results from a disruption of the d8-d8 metallophilic interactions in the red form and its metal-metal-to-ligand charge transfer (MMLCT) excited state to a more-localized Pt(d)-to-tpy(*) metal-to-ligand charge transfer (MLCT) excited state in the green form.
文章链接： http://pubs.acs.org/cgi-bin/abst ... /abs/ic700947g.html
[ 本帖最后由 citric 于 2007-12-12 23:34 编辑 ]
谢谢啦， 还有一篇 JACS 在投！希望有好消息！
GMT+8, 2017-3-28 13:45 , Processed in 0.089984 second(s), 23 queries .