Applications of metal complexes in analytical chemistry: A review article

Elattar, Rehab H.; El-Malla, Samah F.; Kamal, Amira H.; Mansour, Fotouh R.

doi:10.1016/j.ccr.2023.215568

Cited by 17 publications

(3 citation statements)

References 159 publications

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“…The LOD value of Al 3+ was calculated to be 0.53 μM for 1@EtOH , which was comparable to those of the recently reported sensors (Table S4†). In addition, compared with other sensors, 45 the fluorescence sensor (complex 1 ) in this work has the advantages of portability and visual recognition, and the special cavity guarantees the interaction between complex 1 and Al 3+ .…”

Section: Resultsmentioning

confidence: 99%

A dysprosium(iii)-based triple helical-like complex as a turn-on/off fluorescence sensor for Al(iii) and 4,5-dimethyl-2-nitroaniline

Yin,

Luo,

Wang

et al. 2024

Dalton Trans.

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Section: Resultsmentioning

confidence: 99%

A dysprosium(iii)-based triple helical-like complex as a turn-on/off fluorescence sensor for Al(iii) and 4,5-dimethyl-2-nitroaniline

Yin,

Luo,

Wang

et al. 2024

Dalton Trans.

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“…After being excited by incident light, the ligand will transfer energy to the emitted energy level of the metal ion. A fully preorganized L3 ligand can act as a fluorescent probe to sensitively detect Eu(III) ions …”

Section: Resultsmentioning

confidence: 99%

Preorganization Effects on Eu(III) Ion Coordination by Dipyridyl-Phenanthroline Ligands: A Combined Experimental and Theoretical Analysis

Fang,

Yang,

et al. 2024

Inorg. Chem.

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Although 1,10-phenanthroline has been proven to hold a strong complexing capacity for f-block elements and their derivatives have been applied in many fields, research on more highly or completely rigid phenanthroline ligands is still rare due to the challenging syntheses. Here, we reported three tetradentate ligands 2,9-di(pyridin-2-yl)-1,10-phenanthroline (L1), 12-(pyridin-2-yl)-5, 6dihydroquinolino[8,7b][1,10] phenanthroline (L2 ), and 5,6,11,12tetrahydrobenzo[2,1-b:3,4-b′]bis ([1,10]phenanthroline) (L3) with increasing preorganization on the side chain; among which, L3 is fully preorganized. Their complexation reactions with Eu(III) were systematically investigated by electrospray ionization mass spectrometry (ESI-MS), UV−vis titrations, and single-crystal structures. It is found that all three ligands form only 1:1 M/L complexes with Eu(III). The single-crystal structures revealed that the three ligands hold similar coordination modes, while their stability constants determined by UV−vis titrations were L3 (4.80 ± 0.01) > L2 (4.38 ± 0.01) > L1 (3.88 ± 0.01). This trend is supported not only by the thermodynamic stability of rigid ligands compared to free ligands but also by the conclusion that rigid ligands exhibit faster reaction rates (lower energy barrier) than free ligands kinetically. This work is helpful in providing theoretical guidance for the subsequent development of highly preorganized chelating ligands with strong coordination ability and high selectivity for f-block elements.

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“…Metal complexes have garnered attention for their antimicrobial properties, showcasing potential applications in various elds, including medicine and environmental science. Transition metals, such as copper and silver, exhibit notable antimicrobial activity against a broad spectrum of microorganisms (Elattar et al, 2024). The mechanism of action often involves disrupting microbial cell membranes, inhibiting enzyme activity, and inducing oxidative stress (Huang et al, 2024).…”

Section: Introductionmentioning

confidence: 99%

Inhibitory effects of some metal complexes on four culturable bacteria isolated from indoor air of 30 Unilorin offices

ADETITUN,

Suberu,

Rajee

2024

Preprint

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Microbial contamination indoors significantly impacts air quality and human health. This study focused on microbial contamination in indoor environments, specifically in 30 offices at the University of Ilorin. The research aimed to isolate, characterize, and identify bacteria present in the indoor air. Additionally, the antibiotic sensitivity of the isolated bacteria to four metal complexes was examined. Two offices were sampled in each of the fifteen faculties using the settling plate technique over a five-week period. The bacterial colonies were counted, expressed in cfu m-3, and purified for identification using molecular tools based on 16S rRNA. Four metal complexes (Co(suf)AMZ, Mn(suf)AMZ, Cu(suf)AMZ, and Ni(suf)AMZ) were tested for antibiotic sensitivity using the agar well diffusion method. The study found three Bacillus species and one Pseudomonas species among the isolated bacteria. Bacillus pumilus was consistently present in all offices throughout the entire sampling period. Pseudomonas sp. and Bacillus subtilis appeared in all offices sampled in the fifth week. The total bacterial count ranged from 215 cfu m-3 to 11,164 cfu m-3. Metal complexes Co(suf)AMZ and Ni(suf)AMZ did not inhibit Bacillus altitudinis, while Ni(suf)AMZ, Mn(suf)AMZ, and Cu(suf)AMZ inhibited the growth of Bacillus pumilus. The environmental conditions of the offices showed a maximum temperature of 36.0 oC, a minimum of 27.1 oC, a maximum relative humidity of 54±3.5 %, and a minimum of 30±0.7 %. The study recommends proper sanitation in offices to reduce the risk of opportunistic infections associated with the identified bacteria and enhancement of the complexes used.

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Applications of metal complexes in analytical chemistry: A review article

Cited by 17 publications

References 159 publications

A dysprosium(iii)-based triple helical-like complex as a turn-on/off fluorescence sensor for Al(iii) and 4,5-dimethyl-2-nitroaniline

A dysprosium(iii)-based triple helical-like complex as a turn-on/off fluorescence sensor for Al(iii) and 4,5-dimethyl-2-nitroaniline

Preorganization Effects on Eu(III) Ion Coordination by Dipyridyl-Phenanthroline Ligands: A Combined Experimental and Theoretical Analysis

Inhibitory effects of some metal complexes on four culturable bacteria isolated from indoor air of 30 Unilorin offices

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