title: Host-Guest Engineering of Coordination Polymers for Highly Tunable Luminophores Based on Charge Transfer Emissions.
abstract: Aiming at the targeted construction of coordination polymer luminophores, the engineering of host-guest architectures with charge transfer based emissions is performed by utilizing the interactions between the electron-deficient 2,4,6-tri(pyridin-4-yl)-1,3,5-triazine (tpt) and electron-rich polycyclic aromatic hydrocarbons (PAHs) motifs as acceptors and donors, respectively. Through guest modulation of a prototype coordination polymer [Cd(tpt)(1,4-pda)(H2O)2]·(tpt)·(H2O)2(1) (1,4-H2pda = 1,4-phenylenediacetic acid), a series of coordination polymers with different PAHs as guests, [Cd2(tpt)2(1,4-pda)2]·guest (2-5) (guest = triphenylene for 2, pyrene for 3, coronene for 4, and perylene for 5), are successfully fabricated. Distinct from 1, coordination polymers 2-5 reveal unique bilayer structures with PAHs interlayer and good stability, owing to the enhanced stacking interactions between tpt motifs and PAH guests. Moreover, their emissions cover a wide range of wavelength due to the effective guest to host charge transfer interactions between donor and acceptor motifs. Their readily tunable host-guest charge transfer based emissions make them good candidates as potential luminophores.
authors.affiliation: School of Materials Science and Engineering, National Institute for Advanced Materials, Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry, Nankai University , Tianjin 300350, China.|Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, China.
authors.forename: Bei
authors.initials: B
authors.lastname: Zhao
authors.affiliation: School of Materials Science and Engineering, National Institute for Advanced Materials, Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry, Nankai University , Tianjin 300350, China.|Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, China.
authors.forename: Na
authors.initials: N
authors.lastname: Li
authors.affiliation: School of Materials Science and Engineering, National Institute for Advanced Materials, Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry, Nankai University , Tianjin 300350, China.|Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, China.
authors.forename: Xi
authors.identifier: http://orcid.org/0000-0002-2786-6985
authors.initials: X
authors.lastname: Wang
authors.affiliation: School of Materials Science and Engineering, National Institute for Advanced Materials, Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry, Nankai University , Tianjin 300350, China.|Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, China.
authors.forename: Ze
authors.identifier: http://orcid.org/0000-0002-3865-2165
authors.initials: Z
authors.lastname: Chang
authors.affiliation: School of Materials Science and Engineering, National Institute for Advanced Materials, Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry, Nankai University , Tianjin 300350, China.|State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University , Tianjin 300071, China.|Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, China.
authors.forename: Xian-He
authors.identifier: http://orcid.org/0000-0002-2646-7974
authors.initials: XH
authors.lastname: Bu
keywords: charge transfer emissions; coordination polymer; directed assembly; host−guest engineering; luminophore