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Dual‐Emission Luminescence of Magnesium Coordination Polymers Based on Mixed Organic Ligands
Author(s) -
Wu ZhaoFeng,
Tan Bin,
Deng ZhongHua,
Xie ZaiLai,
Fu JingJing,
Shen NanNan,
Huang XiaoYing
Publication year - 2016
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201503877
Subject(s) - luminescence , photoluminescence , excited state , magnesium , ion , polymer , materials science , chemistry , photochemistry , optoelectronics , organic chemistry , physics , nuclear physics
Presented herein are two luminescent magnesium coordination polymers (Mg‐CPs), namely [Mg 2 (H 2 O) 2 (2‐NDC) 4 (1,10‐phen) 2 ] ( 1 ) and [Mg 2 (H 2 O)(1,4‐NDC) 2 (1,10‐phen)] ( 2 ), in which 2‐NDCH=2‐naphthalenecarboxylic acid, 1,4‐NDCH 2 =1,4‐naphthalene dicarboxylic acid, and 1,10‐phen=1,10‐phenanthroline. Based on the mixed ligands, the title compounds exhibit linker‐based photoluminescence (PL) properties thanks to the unique configuration of the Mg 2+ ions. The two compounds show interesting dual emission on excitation of the different luminophores of the mixed linkers. In particular, the emissions of compound 2 could be tuned from green to yellow simply by varying the excitation energies. Furthermore, 2 could be excited by using a commercial λ =450 nm blue LED chip to generate white‐light emission, which allows the fabrication of a white‐light‐emitting diode (WLED) with 20 lm W −1 luminous efficacy. This work may provide a new method for designing tunable PL CPs by using the low‐cost and abundant magnesium ion.