Crystal structures and investigation of the third-order nonlinear optical properties of four coordination polymers by using the Z-scan technique

Lian, Zhaoxun; Zhao, Ning; Liu, Ping; Chen, An; Wang, Airong; Yang, Fuqiang

doi:10.1039/c8ce01283k

Cited by 8 publications

(3 citation statements)

References 62 publications

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“…6). The bands in the valence band (VB), as well as in the conduction band (CB), are flat, which is in good agreement with reported coordination complexes (Lian et al 2018). The calculated CB minimum is 0.028 eV and the VB maximum is À1.392 eV.…”

Section: Band Structure and Orbital Calculations Of Complex (1)supporting

confidence: 88%

Band gap, sorption properties and fluorescence sensing behaviour of a novel 1D→2D cathenane-like cobalt(II)–organic framework

Zhang¹,

Zhang²,

Zhang³

2019

Acta Crystallogr C

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A novel hydrolytic stable Co II -organic framework, namely poly [[bis(2-amino-4-sulfonatobenzoato-O 1 )tetraaquatris{-1,4-bis[(imidazol-1-yl)methyl]benzene-2 N 3 :N 3 0 }dicobalt(II)] tetrahydrate], {[Co(C 7 H 5 NO 5 S)(C 14 H 14 N 4 ) 1.5 (H 2 O) 2 ]Á-2H 2 O} n , (1), based on multifunctional 2-amino-5-sulfobenzoic acid (H 2 asba) and the auxiliary flexible ligand 1,4-bis[(imidazol-1-yl)methyl]benzene (bix), was prepared using the solution evaporation method. The purity of (1) was confirmed by elemental analysis and powder X-ray diffraction (PXRD) analysis. Complex (1) shows a novel 1D!2D interpenetrating network, which is further extended into a 3D supramolecular framework with channels occupied by the lattice water molecules. The 2-amino-4-sulfonatobenzoate (asba 2À ) ligand adopts a monodentate coordination mode. The bix ligands exhibit gauchegauche (GG) and trans-trans (TT) conformations. A detailed analysis of the solid-state diffuse-reflectance UV-Vis spectrum reveals that an indirect band gap exists in the complex. The band structure, the total density of states (TDOS) and the partial density of states (PDOS) were calculated using the CASTEP program. The calculated band gap (E g ) matches well with the experimental one. The complex exhibits a reversible dehydration-rehydration behaviour. Interestingly, gas sorption experiments demonstrate that the new fully anhydrous compound obtained by activating complex (1) at 400 K shows selective adsorption of CO 2 over N 2 . Complex (1) retains excellent framework stability in a variety of solvents and manifests distinct solvent-dependent fluorescence properties. Moreover, the complex shows multiresponsive fluorescence sensing for some nitroaromatics in aqueous medium.

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Section: Band Structure and Orbital Calculations Of Complex (1)supporting

confidence: 88%

Band gap, sorption properties and fluorescence sensing behaviour of a novel 1D→2D cathenane-like cobalt(II)–organic framework

Zhang¹,

Zhang²,

Zhang³

2019

Acta Crystallogr C

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“…It is well recognized that the highly conjugated π-electron system is conducive to the materials showing strong third-order nonlinear responses. In addition, the complexation of a metal ion with an organic ligand in CCs can result in the delocalization of a π-electron cloud, thus further improving their third-order NLO responses . Following these clues, considerable efforts have been expended to the fabrications of CCs having high third-order NLO susceptibilities, originated from their promising technological applications in data storage, optical limiting, all-optical switching, optical communications, optical computing, and so on .…”

Section: Introductionmentioning

confidence: 99%

Multifunctional Dy^III Enantiomeric Pairs Showing Enhanced Photoluminescences and Third-Harmonic Generation Responses through the Coordination Role of Homochiral Tridentate N,N,N-Pincer Ligands

Cui

Yang

et al. 2021

Inorg. Chem.

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By utilizing Dy(hfac)3(H2O)2 to react with enantiomerically pure tridentate N,N,N-pincer ligands, namely (−)/(+)-2,6-bis(4′,5′-pinene-2′-pyridyl)pyridine (L R and L S ), respectively, homochiral DyIII enantiomeric pairs formulated as Dy(hfac)3L R /Dy(hfac)3L S (R -1/S -1) (hfac– = hexafluoroacetylacetonate) were achieved and structurally characterized. Meanwhile, their magnetic, photoluminescent (PL), and chiroptical properties were probed. The PL test results indicate that the precursor Dy(hfac)3(H2O)2 only shows very weak emission, while R -1 exhibits characteristic DyIII f–f transition emission bands at room temperature. Furthermore, the nonlinear optical responses of Dy(hfac)3(H2O)2, L R /L S , and R -1/S -1 were investigated in detail based on crystalline samples. The results reveal that L R and L S present the coexistence of second- and third-harmonic generation (SHG and THG) responses with more intense signals for SHG responses; and Dy(hfac)3(H2O)2 merely displays weak THG responses, while R -1 and S -1 also only exhibit THG responses. However, the THG intensities of R -1 and S -1 are more than six times larger than that of Dy(hfac)3(H2O)2 under the identical measurement conditions. These results demonstrate that introducing homochiral N,N,N-pincer ligands to replace two H2O molecules of Dy(hfac)3(H2O)2 results in significant improvements of both PL performances and THG responses of resultant R -1/S -1 enantiomers. R -1 and S -1 integrate PL, THG, and chiral optical activity in one molecule, suggesting their multifunctional merits. In particular, a convenient method is introduced to simultaneously test THG and SHG responses of molecular materials based on crystalline samples in this work.

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“…With this speculation in mind, we herein report a visible-light-induced nickel-catalyzed cross-coupling reaction of aryl halides with carboxylic acids and sulfonamides under mild and green reaction conditions (Scheme c). A key feature of this strategy is the utilization of the coordination effect between nucleophiles and Ni(II) species, visible-light-induced ligand-to-metal charge transfer (LMCT) . The method does not need any additional photosensitizers and conventional ligands.…”

mentioning

confidence: 99%

Light-Promoted Nickel-Catalyzed C–O/C–N Coupling of Aryl Halides with Carboxylic Acids and Sulfonamides

Zhao

Qin

2023

Org. Lett.

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A general strategy for the construction of dual-functional carbon–heteroatom bonds has been developed via a light-promoted nickel catalytic system. Employing a simple NiBr2 as the catalyst without any exogeneous ligands and photosensitizers, a variety of esters and sulfonamide N-arylation derivatives, including celecoxib- and glimepiride-derived sulfonamides, were readily accessed with high functional group tolerance and high efficiency. Moreover, the UV–vis absorption spectrum and free radical trapping experiments aimed at revealing the mechanism of the reaction are also presented.

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Crystal structures and investigation of the third-order nonlinear optical properties of four coordination polymers by using the Z-scan technique

Abstract: Four coordination polymers with different structures are reported. They exhibit different third-order nonlinear optical activities.

Cited by 8 publications

References 62 publications

Band gap, sorption properties and fluorescence sensing behaviour of a novel 1D→2D cathenane-like cobalt(II)–organic framework

Band gap, sorption properties and fluorescence sensing behaviour of a novel 1D→2D cathenane-like cobalt(II)–organic framework

Multifunctional Dy^III Enantiomeric Pairs Showing Enhanced Photoluminescences and Third-Harmonic Generation Responses through the Coordination Role of Homochiral Tridentate N,N,N-Pincer Ligands

Light-Promoted Nickel-Catalyzed C–O/C–N Coupling of Aryl Halides with Carboxylic Acids and Sulfonamides

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Crystal structures and investigation of the third-order nonlinear optical properties of four coordination polymers by using the Z-scan technique

Abstract: Four coordination polymers with different structures are reported. They exhibit different third-order nonlinear optical activities.

Cited by 8 publications

References 62 publications

Band gap, sorption properties and fluorescence sensing behaviour of a novel 1D→2D cathenane-like cobalt(II)–organic framework

Band gap, sorption properties and fluorescence sensing behaviour of a novel 1D→2D cathenane-like cobalt(II)–organic framework

Multifunctional DyIII Enantiomeric Pairs Showing Enhanced Photoluminescences and Third-Harmonic Generation Responses through the Coordination Role of Homochiral Tridentate N,N,N-Pincer Ligands

Light-Promoted Nickel-Catalyzed C–O/C–N Coupling of Aryl Halides with Carboxylic Acids and Sulfonamides

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Product

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About

Multifunctional Dy^III Enantiomeric Pairs Showing Enhanced Photoluminescences and Third-Harmonic Generation Responses through the Coordination Role of Homochiral Tridentate N,N,N-Pincer Ligands