Kuwahara Taiki, Ohtsu Hideki, Tsuge Kiyoshi
Graduate School of Science and Engineering, University of Toyama, Toyama, Toyama 930-8555, Japan.
Inorg Chem. 2021 Feb 1;60(3):1299-1304. doi: 10.1021/acs.inorgchem.0c03329. Epub 2021 Jan 15.
Luminescent silver(I) coordination polymers having a {Ag(μ-X)} rhombic core (X = I, Br) were prepared using pyrazine (pyz), methylpyrazine (Mepyz), and aminopyrazine (ampyz) as bridging ligands. Photophysical measurements show that the complexes were strongly luminescent in the solid state at room temperature; further, the emissive excited state of the pyz and Mepyz complexes was a triplet charge-transfer (CT) excited state, similar to that of their copper(I) congeners, whereas that of the ampyz complex was a intraligand (IL) excited state. The energy of the CT excited state of a silver halogenido complex was revealed to be ca. 5000 cm higher than that of the corresponding copper complex.
使用吡嗪（pyz）、甲基吡嗪（Mepyz）和氨基吡嗪（ampyz）作为桥连配体，制备了具有{Ag(μ-X)}菱形核（X = I，Br）的发光银（I）配位聚合物。光物理测量表明，这些配合物在室温下的固态中具有强烈的发光性；此外，pyz和Mepyz配合物的发射激发态是三重态电荷转移（CT）激发态，与其铜（I）同系物相似，而ampyz配合物的发射激发态是配体内（IL）激发态。银卤化物配合物的CT激发态能量比相应的铜配合物高约5000 cm。
