Beschreibung:
<jats:title>Abstract</jats:title><jats:p>Presented herein are two luminescent magnesium coordination polymers (Mg‐CPs), namely [Mg<jats:sub>2</jats:sub>(H<jats:sub>2</jats:sub>O)<jats:sub>2</jats:sub>(2‐NDC)<jats:sub>4</jats:sub>(1,10‐phen)<jats:sub>2</jats:sub>] (<jats:bold>1</jats:bold>) and [Mg<jats:sub>2</jats:sub>(H<jats:sub>2</jats:sub>O)(1,4‐NDC)<jats:sub>2</jats:sub>(1,10‐phen)] (<jats:bold>2</jats:bold>), in which 2‐NDCH=2‐naphthalenecarboxylic acid, 1,4‐NDCH<jats:sub>2</jats:sub>=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<jats:sup>2+</jats:sup> ions. The two compounds show interesting dual emission on excitation of the different luminophores of the mixed linkers. In particular, the emissions of compound <jats:bold>2</jats:bold> could be tuned from green to yellow simply by varying the excitation energies. Furthermore, <jats:bold>2</jats:bold> could be excited by using a commercial <jats:italic>λ</jats:italic>=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<jats:sup>−1</jats:sup> luminous efficacy. This work may provide a new method for designing tunable PL CPs by using the low‐cost and abundant magnesium ion.</jats:p>