Abstract
• A novel multifunctional Cd-viologen coordination polymer has been synthesized. • The photochromic mechanism of 1 was investigated experimentally and theoretically. • Compound 1 has the ability to detect amines. • The photo-controlled luminescence properties of 1 has been explored. A novel coordination polymer, named [Cd(HCOO)(pbpy) 0.5 (bdc)(H 2 O)]·3H 2 O ( 1 ), based on a new flexible viologen ligand 1,1′-[1,4-phenylenebis(methylene)]-bis(4,4′-bipyridinium) dichloride ( pbpy·2Cl ), Cd(NO 3 ) 2 ·4H 2 O and terephthalic acid (H 2 bdc) was synthesized. Compound 1 has good photosensitive activity and can also respond to sunlight at room temperature. And using time-dependent density functional theory (TDDFT) to study the discoloration mechanism of compound 1 . Attractively, 1 has the ability to select and detect amines due to the electron-deficient properties of pbpy·2Cl . In addition, photocontrolled luminescence properties of 1 , during the coloration-decoloration process, has been researched.
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