School of Chemistry, Madurai Kamaraj University, Madurai, India.
J Fluoresc. 2013 Sep;23(5):997-1006. doi: 10.1007/s10895-013-1226-6. Epub 2013 May 29.
The two t-butylcalix[4]arene attached ruthenium(II)-bipyridine complexes (Rubc2 and Rubc3) has been synthesized and the anion recognition studies have been carried out using emission techniques. The binding of anions, which are sensed by the complexes, are studied by UV-visible and emission techniques. The complex Rubc2 recognizes the Cl(-), H2PO4 (-) and AcO(-) anions. The complex Rubc3 recognizes the Br(-) and AcO(-) anions. The AcO(-) quenches the emission intensity of both two complexes but the other anion increases the emission intensity of the complexes. The excited state lifetime and transient absorption studies were carried out the AcO(-) facilitates non radiative pathway. The other anions stabilize the excited state and facilitate the radiative pathway.
两个叔丁基杯[4]芳烃连接的钌（II）-联吡啶配合物（Rubc2 和 Rubc3）已经被合成，并通过发射技术进行了阴离子识别研究。通过紫外可见吸收光谱和发射技术研究了配合物对阴离子的结合。配合物 Rubc2 识别 Cl(-)、H2PO4(-)和 AcO(-)阴离子。配合物 Rubc3 识别 Br(-)和 AcO(-)阴离子。AcO(-)猝灭了两个配合物的发射强度，但其他阴离子增加了配合物的发射强度。进行了激发态寿命和瞬态吸收研究，结果表明 AcO(-)促进了非辐射途径。其他阴离子稳定了激发态并促进了辐射途径。
