@article {Hu:2018:0095-8972:1368,
title = "Ag/Cd coordination architecture and photoluminescence behaviors",
journal = "Journal of Coordination Chemistry",
parent_itemid = "infobike://tandf/gcoo",
publishercode ="tandf",
year = "2018",
volume = "71",
number = "9",
publication date ="2018-05-03T00:00:00",
pages = "1368-1379",
itemtype = "ARTICLE",
issn = "0095-8972",
eissn = "1029-0389",
url = "https://www.ingentaconnect.com/content/tandf/gcoo/2018/00000071/00000009/art00004",
doi = "doi:10.1080/00958972.2018.1467008",
keyword = "Ag complex, photoluminescence behavior, large stokes shift, argentophilic contact",
author = "Hu, Jiyong and Zhao, Yujie and Yang, Fan and Liao, Chunli and Zhao, Jinan",
abstract = "Three coordination architectures, {[Ag4(pbmb)4\textperiodcentered(BF4)4](CH3OH)2\textperiodcenteredH2O}n (1), {[Cd2(pbmb)4](ClO4)4\textperiodcentered(CH3OH)5}n
(2), and [Cd4(pbmb)4\textperiodcenteredI8(CH3OH)2]n (3) (pbmb=1-((2-(pyridin-2-yl)-1H-benzoimidazol-1-yl)methyl)-1H-benzotriazole), are built up from Ag(I)/Cd(II) salts and a flexible pyridyl-benzimidazole-based
organic spacer. Single-crystal analysis shows that 1 and 2 have 1-D chains, while 3 displays a tetranuclear structure. All complexes exhibit different coordination geometries and properties, which can be attributed to the difference between the metal centers or anions.
In the case of 1 in particular, the AgAg interactions play a crucial role in the formation of a supramolecular architecture. The binuclear-based complex consists of a pair of AgAg contacts (ca. 2.953 \AA), and it exhibits intense triplet emission with large
Stokes shift and high thermal stability. Compared to pbmb, 2 has excellent high-energy fluorescence properties, while 1 and 3 exhibit mainly low-energy emission. Therefore, it can be concluded that the heavy atom effect has a causative influence in enhancing the triplet
state radiative rate, resulting in large Stokes shift of the complex.",
}