Conformation-controlled luminescent properties of lanthanide clusters containing p-tert-butylsulfonylcalix[4]arene.
Conformation-controlled luminescent properties of lanthanide clusters containing p-tert-butylsulfonylcalix[4]arene.
复制标题
DOI：
10.1021/ic060397t
复制
发表时间：
2006-05
影响因子：
4.6
通讯作者：
T. Kajiwara;K. Katagiri;M. Hasegawa;A. Ishii;M. Ferbinteanu;S. Takaishi;Tasuku Ito;M. Yamashita;Nobuhiko Iki
中科院分区：
文献类型：
--
作者：
T. Kajiwara;K. Katagiri;M. Hasegawa;A. Ishii;M. Ferbinteanu;S. Takaishi;Tasuku Ito;M. Yamashita;Nobuhiko Iki
以对叔丁基磺酰基杯[4]芳烃为配体，通过分步构筑法合成了含Eu（Ⅲ）和Tb（Ⅲ）的双核立方烷型镧系簇合物。磺酰基杯芳烃在双核配合物中呈捏锥构象，在立方烷配合物中呈锥构象。由于杯芳烃具有在整个分子上扩展的大π共轭体系，因此其表现为UV和近UV光的良好天线发色团，并且杯芳烃的轻微构象变化（从锥到捏锥，反之亦然）对激发的S1和T1状态的能级有影响。其结果是，选择性观察到的双核和立方烷形系统的EuIII和TbIII的发光性能。
Dinuclear and cubane-shaped lanthanide cluster complexes containing EuIII)and TbIII were synthesized by step-by-step construction using p-tert-butylsulfonylcalix[4]arene as a cluster-forming ligand. The sulfonylcalixarene adopts a pinched-cone conformation in the dinuclear complexes and a cone conformation in the cubane complexes. Because the calixarene has a large pi-conjugate system expanding over the entire molecule, it behaves as a good antenna chromophore for UV and near-UV light, and a slight conformational change of the calixarene (from cone to pinched-cone and vice versa) has an effect on the energy levels of excited S1 and T1 states. As a result, selectivity is observed in the luminescent properties of dinuclear and cubane-shaped systems of EuIII and TbIII.