their photophysical properties is made, including absorption, photochromism, emission, and second-order nonlinearproperties. We report a quantitative photoisomerization for both PtDTE1 and PtDTE2, irrespective of the nature of the connecting mode between the DTE unit and the platinum(II) moiety. The efficient photochromism allows a significant NLO photomodulation, both in solution and in thin films
我们公开了一个新的光致变色环金属化铂(II)配合物家族(PtDTE1和PtDTE2),其中二噻吩基乙烯(DTE)单元通过(N ^ C ^ N)环金属化配体的中心苯环的对位连接,通过两种不同的联系。他们的合成与PtDTE1的开放和封闭异构体的X射线表征一起呈现。研究了它们的光物理性质,包括吸收,光致变色,发射和二阶非线性性质。我们报告了PtDTE1和PtDTE2的定量光异构化,无论DTE单元和铂(II)部分之间的连接方式如何。有效的光致变色作用可在溶液和薄膜中实现显着的NLO光调制。此外,我们表明PtDTE1和PtDTE2的光致发光可以通过DTE单元的开放/封闭异构化来控制。
New fluorescent bis-dithienylethene (DTE)-based bipyridines as reverse interrupters: single vs. double photochromism
作者:Lucie Ordronneau、Julien Boixel、Vincent Aubert、Matias S. Vidal、Sergio Moya、Pedro Aguirre、Loic Toupet、J. A. Gareth Williams、Hubert Le Bozec、Véronique Guerchais
DOI:10.1039/c3ob42119h
日期:——
The synthesis and characterization of a series of fluorescent bis-dithienylethene (DTE)-based bipyridines, where the donor (D) and acceptor (A) groups are located on the same thiophene ring of the DTE unit, and their zinc(II) and rhenium(I) complexes are reported. Their photochromicproperties have been investigated by UV-visible and 1H NMR spectroscopy. These studies reveal that in non-polar solvents
一系列基于荧光双二噻吩乙烯(DTE)的联吡啶的合成与表征,其中供体(D)和受体(A)位于DTE单元的同一噻吩环上,并且它们的锌(II)和reported (I)配合物的报道。通过紫外可见和1 H NMR光谱研究了它们的光致变色性质。这些研究表明,在非极性溶剂,可以调节光反应,单VS。通过改变供体基团的性质实现双环封闭。还讨论了溶剂效应以及有机金属部分对这些分子的光致变色行为的影响。最后,在光转化为光平稳状态(PSS)时,由于闭环时的缀合破坏,联吡啶配体观察到荧光猝灭。
A “reverse interrupter”: the novel molecular design of a fluorescent photochromic DTE-based bipyridine
作者:Vincent Aubert、Elena Ishow、Fatima Ibersiene、Abdou Boucekkine、J. A. Gareth Williams、Loic Toupet、Rémi Métivier、Keitaro Nakatani、Véronique Guerchais、Hubert Le Bozec
DOI:10.1039/b823113c
日期:——
An original design of a fluorescent dithienylethene (DTE)-based bipyridine, where donor (D) and acceptor (A) groups are located on the same thiophene ring of the DTE unit, is reported; in non-polar solvents, UV or visible excitation triggers a photochromic reaction, disrupting the conjugation and quenching the fluorescence.