Synthesis of Multinuclear Zn(II) Complexes Involving 8‐Aminoquinoline‐ Based Schiff‐Base Ligand: Structural Diversity, DNA Binding Studies and Theoretical Calculations.

Ghorai, Pravat; Brandão, Paula; Bauzá, Antonio; Saha, Amrita

doi:10.1002/slct.201801273

Cited by 9 publications

(5 citation statements)

References 66 publications

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“…8-Aminoquinoline-based Schiff base ligands (L1 and L2) have been produced following a standard procedure . 2-Pyridinecarboxaldehyde (for L1) or 6-methylpyridine-2-carboxaldehyde (for L2) is mixed with 8-aminoquinoline in a 1:1 molar ratio to prepare the Schiff base ligands.…”

Section: Resultsmentioning

confidence: 99%

“…The 8-aminoquinoline-based Schiff base ligands L1 and L2 were prepared by a reported procedure . Briefly, a 1:1 molar ratio mixture of 2-pyridinecarboxaldehyde (for L1) or 6-methylpyridine-2-carboxaldehyde (for L2) and 8-aminoquinoline was refluxed in methanol for 3 h. The reddish yellow solution obtained was used directly for metal complex formation without further purification.…”

Section: Experimental Sectionmentioning

confidence: 99%

“…Therefore, the synthesis and characterization of multifunctional photoconducting CPs based on other transition metals will open up new opportunities in this area. To develop luminescent materials, we have synthesized two N 3 donor Schiff base ligands (L1 and L2, Scheme ) from 8-aminoquinoline and pyridinecarboxaldehyde, since Schiff base ligands prepared from 8-aminoquinoline are known to give rise to effective luminescent materials . Additionally, bulky N 3 donor ligands leave vacant coordination positions and allow versatile bridging ligands such as thiocyanato to bridge metals through N- and S-coordination to construct CPs …”

Section: Introductionmentioning

confidence: 99%

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Multifunctional Ni(II)-Based Metamagnetic Coordination Polymers for Electronic Device Fabrication

et al. 2020

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The combination of two 8-aminoquinoline-based Schiff base ligands (L1 and L2) with SCN − and Ni(II) has led to the synthesis of two new onedimensional thiocyanato-bridged coordination polymers: [Ni(L1)(NCS) 2 ] n (1) and [Ni(L2)(NCS) 2 ] n (2). Both compounds are isostructural and consists of regular zigzag thiocyanato-bridged chains with very weak S•••S interchain interactions. The measured room-temperature conductivities of compounds 1 and 2 (7.0 × 10 −5 and 2.0 × 10 −5 S m −1 , respectively) are indicative of semiconductor behavior which increases in the presence of photoillumination (3.5 × 10 −4 and 4.9 × 10 −4 S m −1 , respectively). The measured I−V characteristics of compound 1 and 2 based thin film metal−semiconductor (MS) junction devices under irradiation and nonirradiation conditions show a nonlinear rectifying behavior, typical of a Schottky diode (SD). The rectification ratios (I on /I off ) of the SDs in the dark at ±2 V (26.96 and 31.96 for 1-and 2-based devices, respectively) increase to 44.19 and 79.42, respectively, upon light irradiation. The photoinduced behavior has been analyzed by thermionic emission theory, and to determine the diode parameters, the Cheung's method has been employed. These diode parameters indicate that compound 2 has a better performance in comparison to compound 1 and that these materials are good candidates for applications in electrochemical devices. Magnetic measurements show that both compounds present ferromagnetic Ni−Ni intrachain and weak antiferromagnetic interchain interactions. The isothermal magnetizations at 2 K show that both compounds are metamagnets with critical fields of ca. 130 mT in 1 and 90 mT in 2 at 2 K. In the ferromagnetic phase (above the critical field), both compounds exhibit a long-range ferromagnetic order with critical temperatures of around 3.5 K in 1 and 3.0 K in 2. DC and AC measurements with different applied DC fields confirm the metamagnetic behaviors and have allowed the determination of the magnetic phase diagram in both compounds.

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Section: Resultsmentioning

confidence: 99%

Section: Experimental Sectionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Multifunctional Ni(II)-Based Metamagnetic Coordination Polymers for Electronic Device Fabrication

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“…The Schiff base ligands ( HL 1 and HL 2 ) are prepared by following a reported procedure. − Briefly, 3- aminoquinoline or 5-aminoquinoline and o -vanillin are mixed in a 1:1 molar ratio in methanol solvent and stirred for 3 h at room temperature. They are thoroughly characterized by elemental analysis, ESI-mass spectrometry, NMR, and IR spectroscopy studies (Figures S1–S8, Supporting Information).…”

Section: Resultsmentioning

confidence: 99%

“…The Schiff base ligands ( HL 1 and HL 2 ) were prepared by the standard method. − Briefly, 4.0 mmol (0.576 g) of 3-aminoquinoline or 5-aminoquinoline (for HL 1 and HL 2 , respectively)was mixed with 4.0 mmol (0.608 g) of o -vanillin in 20 mL of methanol. The resulting solution was stirred for 3h at room temperature (Scheme S1).…”

Section: Experimental Sectionmentioning

confidence: 99%

Cd(II) Based Coordination Polymer Series: Fascinating Structures, Efficient Semiconductors, and Promising Nitro Aromatic Sensing

Ghorai¹,

Dey

Hazra

et al. 2019

Crystal Growth & Design

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Three Cd(II) based coordination polymers (CPs) (1–3) are designed using 3-aminoquinoline and 5-aminoquinoline based Schiff base ligands and thiocyanate and dicyanamide as bridging ligands. Pseudohalide linkers play a crucial role in the architecture of the CPs. These compounds are prepared under an ambient condition with high yield. The I–V characteristics of the 1–3 based thin film devices (Al/complex interface) under dark and illumination conditions are nonlinear rectifying nature, which is the signature of a Schottky barrier diode (SBD). The rectification ratio (I on/I off) of the SBDs under dark condition at ±2 V has been obtained as 16.41, 15.48, and 14.73 and under illumination conditions; the same has been evaluated as 67.18, 46.23, and 37.69 for 1, 2, and 3, respectively. The photoresponsivity of the device is found to be 5.52, 2.89, and 2.54 for 1, 2, and 3 based SBDs, respectively. The enhancement of conductivity under photoilluminated conditions depends on π-electron donor capacity of Schiff base ligands and the length of pseudohalide linkers of 1–3. Again, depending on the binding fashion of the coordinating ligands, three CPs (1–3) exhibit different selectivity toward nitroaromatic sensing. In 2,4,6-trinitrophenol (TNP) sensing, CPs follow the order 3 > 2 > 1. CP 3 has the highest quenching constant among the other two CPs along with a prominent selectivity and lowest detection limit in response to TNP.

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Exploiting the biological potential of Zn(II) complex derived from zwitterionic Schiff base: DNA binding and cytotoxicity activity against human cervical cancer

Afzal

2022

Chem. Pap.

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Synthesis of Multinuclear Zn(II) Complexes Involving 8‐Aminoquinoline‐ Based Schiff‐Base Ligand: Structural Diversity, DNA Binding Studies and Theoretical Calculations.

Cited by 9 publications

References 66 publications

Multifunctional Ni(II)-Based Metamagnetic Coordination Polymers for Electronic Device Fabrication

Multifunctional Ni(II)-Based Metamagnetic Coordination Polymers for Electronic Device Fabrication

Cd(II) Based Coordination Polymer Series: Fascinating Structures, Efficient Semiconductors, and Promising Nitro Aromatic Sensing

Exploiting the biological potential of Zn(II) complex derived from zwitterionic Schiff base: DNA binding and cytotoxicity activity against human cervical cancer

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