Polymethacrylic zinc porphyrin: A new approach to chiral recognition

Angiolini, Luigi; Benelli, Tiziana; Giorgini, Loris

doi:10.1016/j.reactfunctpolym.2010.12.005

Cited by 11 publications

(10 citation statements)

References 37 publications

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“…In the case of ZnDP−C≡C−Ph−NMe 2 ‐ p , as the most distorted molecule, the calculated rotational strengths are 2.2 and −1.2 cgs. This agrees with the previously obtained experimental reports about silent ECD spectra of achiral porphyrins [131,132] …”

Section: Resultssupporting

confidence: 93%

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Chirogenesis in Zinc Porphyrins: Theoretical Evaluation of Electronic Transitions, Controlling Structural Factors and Axial Ligation

et al. 2021

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In the present work, sixteen different zinc porphyrins (possessing different meso substituents) with and without a chiral guest were modelled using DFT and TD‐DFT approaches in order to understand the influence of various controlling factors on electronic circular dichroism (ECD) spectra. Two major aspects are influenced by these factors: excitation energy of the electronic transitions and their intensity. In the case of excitation energy, the influence increases in the following order: orientation of the peripheral substituents

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Section: Resultssupporting

confidence: 93%

“…This agrees with the previously obtained experimental reports about silent ECD spectra of achiral porphyrins. [ 131 , 132 ]…”

Section: Resultsmentioning

confidence: 99%

Chirogenesis in Zinc Porphyrins: Theoretical Evaluation of Electronic Transitions, Controlling Structural Factors and Axial Ligation

et al. 2021

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“…Side‐chain liquid‐crystalline polymers (SCLCPs), due to the combination of properties of both, liquid crystals and polymers, possess good processability, film‐formation ability, and good mechanical properties and hence, have attracted great attention . Due to the π–π stacking of the planar aromatic cores and the interactions of the peripheral chains, discotic SCLCPs (DSCLCPs) can self‐assemble into well‐ordered supramolecular structures, which find applications as organic superconducting materials or organic magnetic materials . For example, the triphenylene (Tp)‐based SCLCPs have been widely investigated because they possess several advantages, such as relatively easy synthesis, thermal and chemical stability, excellent charge carrier mobility, and varieties of mesophases .…”

Section: Introductionmentioning

confidence: 99%

Influence of main chain on the phase behaviors of side‐chain liquid‐crystalline polymers with triphenylene mesogens of long alkyl tail substituents

Chen

Luo

et al. 2016

J. Polym. Sci. Part A: Polym. Chem.

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A series of side‐chain liquid‐crystalline polymers (SCLCPs) containing triphenylene mesogen, in which the long alkyl tail Tp connected directly with main chain, were synthesized successfully. The chemical structures of the monomers were confirmed by 1H NMR and mass spectrometry. The phase behaviors of polymers were investigated by a combination of techniques, including DSC, POM, 1D/2D WAXD, and SAXS. The experimental results suggested that the type of main chain played an important role in the LC phase structures of these polymers. Because of the steric effects of side chains and the coupling effects between the Tp moieties and the main chains, all the polymers exhibited columnar phase. However, the SCLCPs with poly(vinyl benzene methyl ether) or polynorbornene backbone displayed hexagonal columnar phase, while those with polyacrylate or polymethacrylate backbone presented columnar nematic phase, and the one with poly(vinyl benzoate) main chain showed rectangular columnar phase. Moreover, the clearing temperatures (Ti) changed with change in main chain. Especially, the Ti of the SCLCP with polymethacrylate backbone was above 300 °C. © 2016 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2017, 55, 754–766

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“…Chiral coordination compounds are a significant class of coordination compounds with highly intriguing properties that render them attractive candidates for magnetic materials, [1][2][3] optical materials, [4][5][6][7] chiral recognition, [8][9][10] asymmetric catalysis, [11][12][13] and so on. Among them, chiral magnets, especially chiral single-molecule magnets (SMMs), which display interactions between magnetism and chirality, have become an important kind of multifunctional molecular material.…”

Section: Introductionmentioning

confidence: 99%

Chiral [NaMnIIMnIII3] and [Na2MnII2MnIII6] clusters constructed by chiral multidentate Schiff-base ligands: synthesis, structures, CD spectra and magnetic properties

et al. 2014

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Two pairs of novel enantiomerically chiral clusters R/S-[NaMn(II)Mn(III)3L3(μ3-O)] (R/S-1) and R/S-[Na2Mn(II)2Mn(III)6L6(μ3-O)2] (R/S-2) have been obtained via the self-assembly of R/S-H2L Schiff base ligands and different auxiliary ligands (N3(-), dca(-)) with divalent manganese salt in an air-exposed methanol-ethanol solution. The structures of R/S-1 and R/S-2 were characterized by single-crystal X-ray diffraction analysis and powder X-ray diffraction. When the dicyanamide anion serves as an auxiliary ligand in the assembling reaction system, a pair of enantiomeric clusters R/S-[NaMn(II)Mn(III)3L3(μ3-O)] (R-1 and S-1) with a trigonal bipyramid configuration were obtained, while another pair of enantiomeric clusters R/S-[Na2Mn(II)2Mn(III)6L6(μ3-O)2] (R-2 and S-2) were formed in the case of the azide. Interestingly, the skeleton configuration of R/S-2 can be described as a 3-fold EO-azide bridging double trigonal bipyramid of [NaMn(II)Mn(III)3L3(μ3-O)]2via Mn(II) vertices. Circular dichroism (CD) spectra demonstrated the enantiomeric nature of the two pairs of clusters. Detailed direct current (DC) magnetic susceptibility studies in the temperature range 2-300 K suggested that R-1 and R-2 showed predominantly antiferromagnetic interactions between the manganese centers.

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Polymethacrylic zinc porphyrin: A new approach to chiral recognition

Cited by 11 publications

References 37 publications

Chirogenesis in Zinc Porphyrins: Theoretical Evaluation of Electronic Transitions, Controlling Structural Factors and Axial Ligation

Chirogenesis in Zinc Porphyrins: Theoretical Evaluation of Electronic Transitions, Controlling Structural Factors and Axial Ligation

Influence of main chain on the phase behaviors of side‐chain liquid‐crystalline polymers with triphenylene mesogens of long alkyl tail substituents

Chiral [NaMnIIMnIII3] and [Na2MnII2MnIII6] clusters constructed by chiral multidentate Schiff-base ligands: synthesis, structures, CD spectra and magnetic properties

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