2D Metallosupramolecular Arrays of Zinc‐5,10,15,20‐tetra(4‐pyridyl)porphyrin via Self‐complementary Coordination and Peripheral Linkage

Seidel, Rüdiger W.; Oppel, Iris M.

doi:10.1002/zaac.200900388

Cited by 10 publications

(7 citation statements)

References 28 publications

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“…Porphyrins are an ideal choice for this purpose due to the facile tunability of their electronic properties through modification of the attached substituents or through metallation of the porphyrin macrocycle, 24 and they can easily be attached to a variety of scaffolds. [25][26][27][28][29][30][31][32] Other groups have used porphyrin-DNA constructs to create DNA bundles and tubes, 33,34 to form porphyrin dimers through hybridisation, 35 or as chiral markers for the analysis of DNA structure by CD spectroscopy. 36,37 Previous research in our group has focused on tetraphenyl porphyrin (TPP, 1) 38 or diphenyl porphyrin (DPP) 39 moieties connected via a rigid acetylene linker (Fig.…”

Section: Introductionmentioning

confidence: 99%

Introducing structural flexibility into porphyrin–DNA zipper arrays

et al. 2011

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A more flexible nucleotide building block for the synthesis of new DNA based porphyrin-zipper arrays is described. Changing the rigid acetylene linker between the porphyrin substituent and the 2'-deoxyuridine to a more flexible propargyl amide containing linkage leads in part to an increased duplex stability. The CD spectra reveal different electronic interactions between the porphyrins depending on the type of linker used. Molecular modelling suggests large variation of the relative orientation of the porphyrins within the major groove of the DNA. The porphyrins can be metallated post-synthetically with different metals as shown with zinc, cobalt and copper. The spectroscopic features do not alter drastically upon metallation apart from the CD spectra, and the stability of the metal complex is highly dependent on the nature of the metal. As shown by CD spectroscopy, the zinc porphyrin is rapidly demetallated at high temperatures. Globular structure determination using SAXS indicates that a molecular assembly comprised of a two to four helical bundle dominates in solution at higher concentrations (≥50 μM) which is not observed by spectroscopy at lower concentrations (≤1 μM).

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Section: Introductionmentioning

confidence: 99%

Introducing structural flexibility into porphyrin–DNA zipper arrays

et al. 2011

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“…Ni(II) [142], Fe(II) [143], Fe(III) [143] Zn (II) Al(III) [112], Sn(IV) [112,196], Co(II) [112], Mn (III) [117,122], Zn(II) [112,117,122,[197][198][199][200][201][202]208], Cu(II) [202] Fe (III) Mn(II) [144], Fe(II) [144,145], Fe(III) [143], Co(II) [144], Ni(II) [144], Cu(II) [144], Zn(II) [145] Co (II) Co(II) [99,203,204], Fe(II) [203,204] Zr (IV) Fe(II) [146,147,[149][150][151][152][153][154], Fe(III) [148,149,[155][156][157][158][159][160]…”

Section: Fe (Ii)mentioning

confidence: 99%

Pore engineering of metal-organic frameworks with coordinating functionalities

Jeoung

Kim

et al. 2020

Coordination Chemistry Reviews

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Among porous materials, metal-organic frameworks (MOFs) take the lead in heterogeneous support catalysts because the structure of MOFs can be readily tuned by choice of metal and organic building blocks, and further be modified with diverse functional groups. In order to immobilize catalytically active metal sites on MOFs and efficiently utilize them, it would be essential to employ the coordinating functionalities to the pores and frameworks, which can anchor the metal sites with high stability and control the reactivity of the catalytic centres. However, in order not to obtain the unwanted structures by participation of additional coordinating groups in the framework construction of MOFs, the pore engineering with coordinating functionalities should be carefully implemented. In this review, we discuss various strategies of pore engineering to impart catalytic activities to the MOF architectures, classifying them into two approaches: pre-integrated ligand and sequential attachment. The former demonstrates the use of organic ligands that are already capable of possessing catalytic sites, and the ligands can directly integrate the metals before or after the production of the MOFs. The other approach is the post-synthetic attachment of coordinating functionalities through the sequential attachment process, in which immobilization of catalytically active metal sites also can be achieved by both pre-and post-metalation. Finally, this review will comprehensively discuss the representative catalytic reactions of MOF-based heterogeneous catalysts.

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“…Similar coordination modes have also been reported in some documents. [18][19][20][21] So, we can infer that the structures of the assemblies should be as shown in Scheme 1. These structures were further confirmed by the TEM images and computational calculation analyses.…”

Section: Preparation Of the Assembliesmentioning

confidence: 99%

Design and fabrication of a series of metal-mediated assemblies with tetrapyridylporphyrins for supramolecular solar cells

Deng

Liu

et al. 2014

Dalton Trans.

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In this work, a metal-mediated assembling strategy has been used to organize a series of new assemblies based on tetrapyridylporphyrin () on nanostructured TiO2 electrode surfaces, wherein the metal ions (, = Zn(2+), Cd(2+), Hg(2+) and Mn(2+)) bridge the pyridyl units of and (E)-4-[(pyridin-4-ylmethylene)-amino]benzoic acid (), resulting in a assembled mode. The assembled structures were characterized by transmission electron microscopy (TEM), computational calculations, energy-dispersive X-ray spectroscopy (EDX), IR, UV-vis absorption and fluorescence spectra. The performances of the assembly-sensitized solar cells were also measured under an irradiance of 100 mW cm(-2) AM 1.5G sunlight. Photoelectrochemical results reveal a relatively large photocurrent of the device. Simultaneously, a large open-circuit photovoltage and a significantly improved conversion efficiency of the device are also observed. These findings may serve as another good testing ground for the fabrication of supramolecular solar cells in future.

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2D Metallosupramolecular Arrays of Zinc‐5,10,15,20‐tetra(4‐pyridyl)porphyrin via Self‐complementary Coordination and Peripheral Linkage

Cited by 10 publications

References 28 publications

Introducing structural flexibility into porphyrin–DNA zipper arrays

Introducing structural flexibility into porphyrin–DNA zipper arrays

Pore engineering of metal-organic frameworks with coordinating functionalities

Design and fabrication of a series of metal-mediated assemblies with tetrapyridylporphyrins for supramolecular solar cells

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