Synthesis and Properties Study of Asymmetrical Carbazole Porphyrin With <i>p</i>-Hydroxylphenyl and Its Metal Complexes (Zn, Dy)

Shi, Jian Hui; Li, Zheng; Liu, Wen Yan; Yu, Miao; Li, Zhong Hua; Liu, Guo Fa

doi:10.1080/15533174.2012.740727

Cited by 2 publications

(2 citation statements)

References 24 publications

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“…The first oxidation of s-P2•Dy 2 (E ox = 0.12 V vs Fc/Fc + ) is noticeably easier than that of s-P2•Zn 2 (E ox = 0.36 V), reflecting the fact that Dy III is more electropositive than Zn II . 29 Both s-P2•Dy 2 and s-P2•Zn 2 exhibit a total of five oxidation waves, and the potentials for the Dy III complex are more widely spaced, so that the fifth oxidation potential of s-P2•Dy 2 (E ox = 1.26 V) is substantially higher than that of s-P2•Zn 2 (E ox = 1.09 V). Almost identical behavior was observed for s-P2•Gd 2 (see the Supporting Information, Figure S3).…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…The differential pulse voltammograms of s -P2·Dy 2 , f -P2 -Z ·Dy 2 , and f -P2 - E ·Dy 2 are compared with those of s -P2·Zn 2 and f -P2·Zn 2 in Figure . The first oxidation of s- P2·Dy 2 ( E ox = 0.12 V vs Fc/Fc + ) is noticeably easier than that of s- P2·Zn 2 ( E ox = 0.36 V), reflecting the fact that Dy III is more electropositive than Zn II . Both s- P2·Dy 2 and s- P2·Zn 2 exhibit a total of five oxidation waves, and the potentials for the Dy III complex are more widely spaced, so that the fifth oxidation potential of s- P2·Dy 2 ( E ox = 1.26 V) is substantially higher than that of s- P2·Zn 2 ( E ox = 1.09 V).…”

Section: Resultsmentioning

confidence: 99%

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Singly and Triply Linked Magnetic Porphyrin Lanthanide Arrays

et al. 2022

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The introduction of paramagnetic metal centers into a conjugated π-system is a promising approach toward engineering spintronic materials. Here, we report an investigation of two types of spin-bearing dysprosium(III) and gadolinium(III) porphyrin dimers: singly meso−meso-linked dimers with twisted conformations and planar edge-fused β,meso,β-linked tapes. The rare-earth spin centers sit out of the plane of the porphyrin, so that the singly linked dimers are chiral, and their enantiomers can be resolved, whereas the edge-fused tape complexes can be separated into syn and anti stereoisomers. We compare the crystal structures, UV−vis−NIR absorption spectra, electrochemistry, EPR spectroscopy, and magnetic behavior of these complexes. Low-temperature SQUID magnetometry measurements reveal intramolecular antiferromagnetic exchange coupling between the Gd III centers in the edge-fused dimers (syn isomer: J = −51 ± 2 MHz; anti isomer: J = −19 ± 3 MHz), whereas no exchange coupling is detected in the singly linked twisted complex. The phase-memory times, T m , are in the range of 8−10 μs at 3 K, which is long enough to test quantum computational schemes using microwave pulses. Both the syn and anti Dy 2 edge-fused tapes exhibit single-molecule magnetic hysteresis cycles at temperatures below 0.5 K with slow magnetization dynamics.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Singly and Triply Linked Magnetic Porphyrin Lanthanide Arrays

et al. 2022

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Synthetic aspects of carbazole containing porphyrins and porphyrinoids

Das

Gupta

2019

J. Porphyrins Phthalocyanines

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Porphyrins are tetrapyrrolic aromatic macrocycles and ubiquitous in nature. They are excellent dyes with strong absorption in the visible region (400–700 nm) and they exhibit decent fluorescence in the red region (620–900 nm). Carbazole is a nitrogen-containing electron rich aromatic heterocycle which can be linked to porphyrins and other chromophores. This review provides an overview of the different synthetic strategies that have been employed to prepare carbazole-substituted porphyrins and carbazole-fused porphyrinoids and similar systems. It also shows that how the substitution of carbazole occurs on the porphyrin core can alter its optical and electronic features. Introduction of carbazole moieties in the porphyrin ring resulted in fused porphyrinoids with changed aromaticity and significantly altered electronic features of the molecules.

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Synthesis and Properties Study of Asymmetrical Carbazole Porphyrin With p-Hydroxylphenyl and Its Metal Complexes (Zn, Dy)

Cited by 2 publications

References 24 publications

Singly and Triply Linked Magnetic Porphyrin Lanthanide Arrays

Singly and Triply Linked Magnetic Porphyrin Lanthanide Arrays

Synthetic aspects of carbazole containing porphyrins and porphyrinoids

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