Poly[mu2-4,4'-bipyridine-di-mu2-bromido-cadmium(II)], with novel colour-tunable fluorescence.
The title inorganic-organic hybrid complex, [CdBr2(C(10)H(8)N(2))]n, features two-dimensional [CdBr2(4,4'-bipy)]n (4,4'-bipy is 4,4'-bipyridine) neutral networks, based on the octahedral Cd atom coordinated by four mu2-Br and two mu2-4,4'-bipy at trans positions, yielding a CdBr(4)N(2) octahedron. It crystallizes in the orthorhombic system (Cmmm). All the crystallographically independent atoms are on special positions, namely Cd on mmm, Br on mm, N on mm2, and C on sites of symmetry m or mm2. Optical absorption spectroscopy reveals the presence of an optical gap of 3.76 eV, indicating that the complex is a wide-gap semiconductor. Photoluminescence investigation reveals that the complex displays strong colour-tunable emissions, which might originate from a ligand-to-ligand charge-transfer (LLCT) transition. Thermogravimetric differential thermal analysis shows that the complex is thermally stable up to 493 K.
Chen
Wen Tong
WT
College of Chemistry and Chemical Engineering, JiangXi Province Key Laboratory of Coordination Chemistry, JingGangShan University, 343009 Ji'an, JiangXi, People's Republic of China. wtchen@jgsu.edu.cn
Fang
Xiao Niu
XN
Luo
Qiu Yan
QY
Xu
Ya Ping
YP
Duan
Yan Ping
YP
D015082:2,2'-Dipyridyl / Q000737:chemistry*; D001965:Bromides / Q000737:chemistry*; D002104:Cadmium / Q000737:chemistry*; D018360:Crystallography, X-Ray; D006860:Hydrogen Bonding; D008024:Ligands; D008958:Models, Molecular; D008968:Molecular Conformation; D009942:Organometallic Compounds / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D013050:Spectrometry, Fluorescence / Q000379:methods
D001965:Bromides; D008024:Ligands; D009942:Organometallic Compounds; D011108:Polymers; C524193:poly(mu(2)-4,4'-bipyridine-di-mu(2)-bromidocadmium(II)); D002104:Cadmium; D015082:2,2'-Dipyridyl