Design and synthesis of luminescent porous coordination polymers for chromaticity modulation, sensing of nitrobenzene and iodine encapsulationElectronic supplementary information (ESI) available: NMR spectra of ligands, IR spectra, TG profiles, and PXRD patterns of crystals, emission spectra, and I2 release UV spectra. CCDC 1454151-1454157. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c6ce00960c

• Main Authors: Wang, Haijun, Cheng, Fujun, Zou, Changchang, Li, Qianqian, Hua, Yinying, Duan, Jingui, Jin, Wanqin
• Format: Journal Article
• Published: 25.07.2016
• ISSN: 1466-8033
• DOI: 10.1039/c6ce00960c

We design and prepare a family of luminescent porous coordination polymers (PCPs) constructed from three C 2v symmetry ligands with increased conjugation moieties. Single crystal X-ray analyses revealed that their pore types/sizes and volumes were systematically tuned. Eu-based NTU-5 and NTU-8 emit red light. However, in contrast to the typical green emission of Tb-based PCPs, the increased conjugation moieties in NTU-6 and NTU-9 with a Tb center resulted in a very unusual blue emission. These unique emissions from these iso-structures demonstrated varied pathways of electronic transfer, which were further confirmed by lifetime experiments. Encouraged by these observations, the chromaticity modulation from pink to blue has been well realized by a facile method of self-assembly of the Te-H 3 L ligand and varied molar ratios of Eu 3+ /Tb 3+ ions. Additionally, NTU-6 and NTU-9 showed high potential for nitrobenzene sensing (quenching effect coefficients: 589.5 and 445.6 M −1 ) and encapsulation of I 2 molecules. A family of porous coordination polymers constructed from C 2v symmetry ligands with increased conjugation moieties was systematically designed and prepared, which is highly promising for chromaticity modulation, sensing of nitrobenzene, and I 2 encapsulation.