首页|How ligand coordination and superatomic-states accommodate the structure and property of a metal cluster:Cu4(dppy)4Cl2 vs.Cu21(dppy)10 with altered photoluminescence
How ligand coordination and superatomic-states accommodate the structure and property of a metal cluster:Cu4(dppy)4Cl2 vs.Cu21(dppy)10 with altered photoluminescence
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We have synthesized two copper nanoclusters(NCs)with a protection of the same ligand diphenylphosphino-2-pyridine(C17H14NP,dppy for short),formulated as Cu4(dppy)4Cl2 and Cu21(dppy)10,respectively.The former one bears a distorted tetrahedron Cu4 core with its six edges fully protected by chlorine and dppy ligands,while the latter presents a symmetric Cu21 core on which ten dppy molecules function as monolayer protection via well-organized monodentate or bidentate coordination.Interestingly,the Cu4(dppy)4Cl2 cluster exhibits a strong yellow emission at～577 nm,while Cu21(dppy)10 displays dual emissions in purple(～368nm)and green(～516nm)regions respectively.In combination with TD-DFT calculations,we demonstrate the origin of altered emissions and unique stability of the two copper nan-oclusters pertaining to the ligand coordination and metallic superatomic states.
Haiming Wu、Gaya N.Andrew、Rajini Anumula、Zhixun Luo
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Beijing National Laboratory for Molecular Sciences(BNLMS),State Key Laboratory for Structural Chemistry of Unstable and Stable Species,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190,China
School of Chemistry,University of Chinese Academy of Sciences,Beijing 100049,China
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