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You searched for: Publication Year 2019 Remove constraint Publication Year: 2019 Subject chemical species Remove constraint Subject: chemical species Subject coordination polymers Remove constraint Subject: coordination polymers
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1. Preparation of magnetite/multiwalled carbon nanotubes/metal-organic framework composite for dispersive magnetic micro solid phase extraction of parabens and phthalate esters from water samples and various types of cream for their determination with liquid chromatography

Author:
Jalilian, Niloofar; Ebrahimzadeh, Homeira; Asgharinezhad, Ali Akbar
Source:
Journal of chromatography 2019 v.1608 pp. 460426
ISSN:
0021-9673
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; carbon; carbon nanotubes; chemical species; coordination polymers; detection limit; diethyl phthalate; dimethyl phthalate; energy-dispersive X-ray analysis; high performance liquid chromatography; magnetism; magnetite; methylparaben; models; pH; response surface methodology; salt concentration; scanning electron microscopy; solid phase extraction; sorbents; sorption; standard deviation; sunscreens; thermogravimetry; transmission electron microscopy
Abstract:
... In the current study, MMWCNTs@MIL-101(Cr) (Fe3O4/multiwalled carbon nanotubes/MIL-101(Cr)) was synthesized and utilized as a new sorbent for the first time. It was employed successfully for the extraction of parabens and phthalate esters (PEs) from water and cream samples prior to their quantification with HPLC-DAD. The prepared metal-organic-framework (MOF) was characterized by field emission sca ...
DOI:
10.1016/j.chroma.2019.460426

2. Photoluminescent metal–organic frameworks and their application for sensing biomolecules

Author:
Dong, Jing; Zhao, Dan; Lu, Yi; Sun, Wei-Yin
Source:
Journal of materials chemistry A 2019 v.7 no.40 pp. 22744-22767
ISSN:
2050-7496
Subject:
DNA; RNA; amino acids; antibiotics; ascorbic acid; biosensors; chemical species; coordination polymers; enzymes; glucose; photoluminescence; proteins; synthesis
Abstract:
... Photoluminescence of metal–organic frameworks (MOFs) is sensitive to the structure and concentration of chemical species in the surroundings since MOFs combine the advantages of highly ordered porous structures, varied luminescence origins and diversified host–guest interactions. The diversity and combination flexibility of the organic and inorganic components together with the voids within MOFs o ...
DOI:
10.1039/c9ta07022b

3. Magnetic metal-organic frameworks nanocomposites for negligible-depletion solid-phase extraction of freely dissolved polyaromatic hydrocarbons

Author:
Li, Yingjie; Zhou, Xiaoxia; Dong, Lijie; Lai, Yujian; Li, Shasha; Liu, Rui; Liu, Jingfu
Source:
Environmental pollution 2019 v.252 pp. 1574-1581
ISSN:
0269-7491
Subject:
absorbents; acetonitrile; adsorption; bioavailability; chemical species; coordination polymers; dissolved organic matter; iron oxides; magnetism; nanocomposites; pollutants; polycyclic aromatic hydrocarbons; porosity; solid phase extraction; sonication; surface area
Abstract:
... The bioavailability of a pollutant is usually evaluated based on its freely dissolved concentration (Cfree), which can be measured by negligible-depletion equilibrium extraction that is commonly suffered from long equilibration time. Herein, metal-organic framework (MOF) composites (Fe3O4@MIL-101), consists of a magnetic Fe3O4 core and a MIL-101 (Cr) MOF shell, is developed as sorbents for negligi ...
DOI:
10.1016/j.envpol.2019.04.137

4. A Metal–Organic Framework as Selectivity Regulator for Fe³⁺ and Ascorbic Acid Detection

Author:
Guo, Lan; Liu, Yuan; Kong, Rongmei; Chen, Guang; Liu, Zhe; Qu, Fengli; Xia, Lian; Tan, Weihong
Source:
Analytical chemistry 2019 v.91 no.19 pp. 12453-12460
ISSN:
1520-6882
Subject:
ascorbic acid; biosensors; blood serum; brain; chemical species; coordination polymers; electron transfer; fluorescence; homeostasis; humans; iron; photostability; rats; rhodamines; synthesis
Abstract:
... Ferric ion (Fe³⁺) plays a vital role in cellular homeostasis. However, the detection of Fe³⁺ with rhodamine B (RhB) has potential problems, such as poor selectivity and low photostability. To address these problems, we rationally designed an RhB@MOF nanocomposite-based “on–off–on” fluorescent switching nanoprobe for highly sensitive and selective detection of Fe³⁺ and ascorbic acid. This RhB@MOF n ...
DOI:
10.1021/acs.analchem.9b03143

5. Metal-organic framework-1210(zirconium/cuprum) modified magnetic nanoparticles for solid phase extraction of benzophenones in soil samples

Author:
Li, Wenqing; Wang, Rong; Chen, Zilin
Source:
Journal of chromatography 2019
ISSN:
0021-9673
Subject:
benzophenones; chemical species; coatings; coordination polymers; copper; high performance liquid chromatography; hydrogen bonding; magnetism; nanoparticles; porosity; soil sampling; solid phase extraction; surface area; zirconium
Abstract:
... MOF-1210(Zr/Cu) is a new heterometallic cluster-based metal-organic framework material as well as a promising solid phase extraction coating material with ordered spatial structure, permanent high porosity and large specific surface area. In this work, a novel MOF-1210(Zr/Cu) modified magnetic nanoparticles (MNPs) was successfully prepared for magnetic solid phase extraction (MSPE) of benzophenone ...
DOI:
10.1016/j.chroma.2019.460403

6. Facile in situ synthesis of core–shell MOF@Ag nanoparticle composites on screen-printed electrodes for ultrasensitive SERS detection of polycyclic aromatic hydrocarbons

Author:
Li, Dan; Cao, Xiukai; Zhang, Qinmei; Ren, Xingang; Jiang, Lei; Li, Dawei; Deng, Wei; Liu, Haitao
Source:
Journal of materials chemistry A 2019 v.7 no.23 pp. 14108-14117
ISSN:
2050-7496
Subject:
Raman spectroscopy; adsorption; carbon electrodes; chemical species; coordination polymers; detection limit; nanoparticles; nanosilver; polycyclic aromatic hydrocarbons; quantitative analysis; screening; silver
Abstract:
... This paper reports the fabrication of a highly sensitive and reusable substrate for surface-enhanced Raman scattering (SERS) analysis. Core–shell metal–organic framework (MOF; HKUST-1)@Ag nanoparticles (NPs) are prepared on a screen-printed carbon electrode (SPCE) via in situ electrodeposition. The morphology and Ag coverage of core–shell structures can be easily controlled by electrodeposition po ...
DOI:
10.1039/c9ta03690c

7. Luminescent Metal–Organic Framework for Lithium Harvesting Applications

Author:
Rudd, Nathan D.; Liu, Yanyao; Tan, Kui; Chen, Feng; Chabal, Yves J.; Li, Jing
Source:
ACS sustainable chemistry & engineering 2019 v.7 no.7 pp. 6561-6568
ISSN:
2168-0485
Subject:
Fourier transform infrared spectroscopy; X-ray photoelectron spectroscopy; adsorbents; adsorption; chemical species; coordination polymers; durability; fluorescence; harvesting; lithium; models; porosity; seawater; sodium; thermal stability
Abstract:
... We have synthesized a stable luminescent metal–organic framework (LMOF) through modification of an established Zr-based structure. The three-dimensional porous network of LMOF-321 represents a step forward in the development of robust, dual-ligand Zr-MOFs. This material is based on Zr₆-nodes, which underlie chemically and thermally stable frameworks. LMOF-321 exhibits notable durability in diverse ...
DOI:
10.1021/acssuschemeng.8b05018

8. Portable fluoride-selective electrode as signal transducer for sensitive and selective detection of trace antibiotics in complex samples

Author:
Huang, Shengfeng; Gan, Ning; Zhang, Xinyu; Wu, Yongxiang; Shao, Yong; Jiang, Zhengjin; Wang, Qiqin
Source:
Biosensors & bioelectronics 2019 v.128 pp. 113-121
ISSN:
0956-5663
Subject:
aptasensors; blood serum; chemical species; chloramphenicol; coordination polymers; encapsulation; fish; ions; kanamycin; milk; oligonucleotides; signal transduction; specific ion electrodes; urine
Abstract:
... Ion-selective electrodes (ISE) can rapidly, sensitively detect their corresponding ions and are suitable for field testing. However, most ISE methods cannot detect other targets directly which limits their practice application. Herein, we established an aptamer-sensing platform to detect organic small molecule using a portable fluoride-selective electrode (FSE). To achieve the purpose, novel signa ...
DOI:
10.1016/j.bios.2018.12.042

9. A novel optical approach for determination of prolactin based on Pr-MOF nanofibers

Author:
Sheta, Sheta M.; El-Sheikh, Said M.; Abd-Elzaher, Mokhles M.
Source:
Analytical and bioanalytical chemistry 2019 v.411 no.7 pp. 1339-1349
ISSN:
1618-2642
Subject:
X-ray diffraction; blood serum; calibration; chemical species; coordination polymers; detection limit; energy-dispersive X-ray analysis; infrared spectroscopy; mass spectrometry; nanofibers; neoplasms; photoluminescence; praseodymium; prolactin; scanning electron microscopy; transmission electron microscopy; ultraviolet-visible spectroscopy
Abstract:
... The analytical quantification and follow-up of the hormone prolactin is very important in clinical diagnosis (e.g., in cases of breast cancer), treatment, and the medical laboratory. The development of a new simple, fast, and less costly method is of considerable importance. Novel praseodymium metal–organic framework nanofibers (Pr-MOF-NFs) were synthesized by a facile and simple method for the de ...
DOI:
10.1007/s00216-018-01564-6

10. Metal–organic framework-based affinity materials in proteomics

Author:
Saeed, Adeela; Hussain, Dilshad; Saleem, Shafaq; Mehdi, Sehrish; Javeed, Rabia; Jabeen, Fahmida; Najam-ul-Haq, Muhammad
Source:
Analytical and bioanalytical chemistry 2019 v.411 no.9 pp. 1745-1759
ISSN:
1618-2642
Subject:
batch systems; bioreactors; chemical species; coordination polymers; desorption; detection limit; digestion; glycopeptides; ionization; ligands; mass spectrometry; pH; phosphopeptides; proteins; proteome; proteomics; sorbents; surface area
Abstract:
... Metal–organic frameworks (MOFs) are an eminent addition to materials science research because of their versatile properties due to which their applications are wide spread in proteomics. They are used in various fields due to their characteristics like higher surface area, specific symmetry, ease of modification, and availability of a variety of ligands. As affinity sorbents, they have shown highe ...
DOI:
10.1007/s00216-019-01610-x

11. Nonderivatization method for determination of glyphosate, glufosinate, bialaphos, and their main metabolites in environmental waters based on magnetic metal‐organic framework pretreatment

Author:
Pan, Shengdong; Chen, Xiaohong; Li, Xiaohai; Jin, Micong
Source:
Journal of separation science 2019 v.42 no.5 pp. 1045-1050
ISSN:
1615-9306
Subject:
Fourier transform infrared spectroscopy; adsorbents; adsorption; bialaphos; chemical species; coordination polymers; detection limit; glufosinate; glyphosate; magnetism; mass spectrometry; metabolites; solid phase extraction; standard deviation; thermogravimetry; ultra-performance liquid chromatography
Abstract:
... A novel magnetic metal‐organic framework composite was prepared by a self‐assembly approach. The material properties were characterized by Fourier‐transform infrared spectroscopy, vibrating sample magnetometry, thermogravimetry and differential thermogravimetric analysis, and X‐photoelectron spectroscopy. Then, the as‐prepared material was used as an adsorbent and indicated great enrichment abilit ...
DOI:
10.1002/jssc.201800957

12. Core–Shell Metal–Organic Frameworks as the Mixed-Mode Stationary Phase for Hydrophilic Interaction/Reversed-Phase Chromatography

Author:
Li, Xueyun; Li, Bo; Liu, Mingchen; Zhou, Yufeng; Zhang, Liyuan; Qiao, Xiaoqiang
Source:
ACS applied materials & interfaces 2019 v.11 no.10 pp. 10320-10327
ISSN:
1944-8252
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; chemical species; coordination polymers; hydrophilicity; hydrophobicity; lakes; liquid chromatography; liquids; pollutants; polycyclic aromatic hydrocarbons; scanning electron microscopy; silica; thermogravimetry
Abstract:
... Stationary phases with mixed-mode mechanisms have emerged as a hot research topic. In the present research, monodisperse core–shell UiO-67@SiO₂ materials were prepared and further served as the packed column for mixed-mode hydrophilic interaction liquid chromatography/reversed-phase liquid chromatography. The developed UiO-67@SiO₂ materials were characterized via thermogravimetric analysis, scanni ...
DOI:
10.1021/acsami.9b00285

13. Construction of Ce-MOF@COF hybrid nanostructure: Label-free aptasensor for the ultrasensitive detection of oxytetracycline residues in aqueous solution environments

Author:
Zhou, Nan; Ma, Yashen; Hu, Bin; He, Linghao; Wang, Shijun; Zhang, Zhihong; Lu, Siyu
Source:
Biosensors & bioelectronics 2019 v.127 pp. 92-100
ISSN:
0956-5663
Subject:
aptasensors; aqueous solutions; cerium; chemical species; chemical structure; condensation reactions; coordination polymers; detection limit; electrochemistry; environmental monitoring; food safety; heavy metals; medicine; melamine; metal ions; milk; nanohybrids; neoplasms; oligonucleotides; oxytetracycline; surface area; urine; wastewater
Abstract:
... Porous organic framework (COF) nanomaterials have drawn increasing attention and showed promising potential in the applications of various fields. Nevertheless, its applications in biosensing or biomedical fields are still in the early stage. In this work, we designed and synthesized a series of nanohybrids of COF and Ce-based metal organic framework (Ce-MOF) for the first time as label-free biopl ...
DOI:
10.1016/j.bios.2018.12.024

14. Guest-Induced Ultrasensitive Detection of Multiple Toxic Organics and Fe³⁺ Ions in a Strategically Designed and Regenerative Smart Fluorescent Metal–Organic Framework

Author:
Goswami, Ranadip; Mandal, Shyama Charan; Pathak, Biswarup; Neogi, Subhadip
Source:
ACS applied materials & interfaces 2019 v.11 no.9 pp. 9042-9053
ISSN:
1944-8252
Subject:
aminophenols; antibiotics; chemical species; colorimetry; coordination polymers; density functional theory; encapsulation; energy transfer; fluorescence; fluorescent dyes; iron; ligands; metal ions; moieties; monitoring; nitrophenols; pollutants; prediction; simulation models; toxicity; zinc
Abstract:
... Luminescent metal–organic frameworks (LMOFs) are promising functional materials for sustainable applications, where an analyte-induced multiresponsive system with good recyclability is beneficial for detecting numerous lethal pollutants. We designed and built the dual-functionalized, three-dimensional Zn(II)–framework [Zn₃(bpg)₁.₅(azdc)₃]·(DMF)₅.₉·(H₂O)₁.₀₅ (CSMCRI-1) using an −OH group-integrated ...
DOI:
10.1021/acsami.8b20013

15. DNA-shaped silver(i) coordination polymer based micro-solid phase extraction for determination of Amaranth and Brilliant Blue FCF in food and water samples

Author:
Noormohamadi, Hamid Reza; Fat'hi, Mohammad Reza; Ghaedi, Mehrorang; Nobakht, Valiollah; Azizzadeh, Sara
Source:
Analytical methods 2019 v.11 no.5 pp. 618-626
ISSN:
1759-9679
Subject:
chemical species; coordination polymers; food colorants; graphs; mechanochemistry; pH; silver; sorbents; ultraviolet-visible spectroscopy
Abstract:
... In this study, a green and simple mechanochemical synthesis was applied for fabricating a cationic silver(i) coordination polymer (silver(i)-CP) as a promising sorbent for extracting two food dyes including Amaranth and Brilliant Blue FCF during dispersive micro-solid phase extraction directly before UV-Vis spectrophotometric detection. Then, the spectra without overlapping were recorded between 4 ...
DOI:
10.1039/c8ay02350f

16. Nanoscale Metal–Organic Framework Based Two-Photon Sensing Platform for Bioimaging in Live Tissue

Author:
Yang, Chan; Chen, Kun; Chen, Mei; Hu, Xiaoxiao; Huan, Shuang-Yan; Chen, Lanlan; Song, Guosheng; Zhang, Xiao-Bing
Source:
Analytical chemistry 2019 v.91 no.4 pp. 2727-2733
ISSN:
1520-6882
Subject:
biocompatibility; chemical bonding; chemical species; coordination polymers; fluorescent dyes; hydrogen sulfide; image analysis; models; moieties; photostability; signal-to-noise ratio; zinc
Abstract:
... Nanoscale metal–organic frameworks (NMOFs) have been applied for biomedical sensing in recent years. However, it is still a great challenge to construct a highly efficient NMOFs fluorescent probe for sensing in a biological system, with high signal-to-noise ratio, photostability, and deep tissue penetration. Herein, for the first time, we report the two-photon metal–organic framework (TP-MOF) as a ...
DOI:
10.1021/acs.analchem.8b04405

17. Metal azolate framework-66-coated fiber for headspace solid-phase microextraction of polycyclic aromatic hydrocarbons

Author:
Liu, Manman; Liu, Jinfei; Guo, Chao; Li, Yan
Source:
Journal of chromatography 2019 v.1584 pp. 57-63
ISSN:
0021-9673
Subject:
chemical species; coordination polymers; desorption; fluorenes; gas chromatography; headspace analysis; mixing; naphthalene; phenanthrenes; salt concentration; solid phase microextraction; standard deviation; temperature
Abstract:
... Metal azolate frameworks (MAFs) as a subfamily of metal-organic frameworks (MOFs) have received much attention in analyzing organic volatiles owing to their remarkable structures. In this work, the headspace solid-phase microextraction (SPME) fiber based on MAF-66 has been fabricated by a layer-by-layer deposition method. To evaluate the performance of the MAF-66-coated fibers, polycyclic aromatic ...
DOI:
10.1016/j.chroma.2018.11.043

18. Two-dimensional oriented growth of Zn-MOF-on-Zr-MOF architecture: A highly sensitive and selective platform for detecting cancer markers

Author:
Zhou, Nan; Su, Fangfang; Guo, Chuanpan; He, Linghao; Jia, Zhankui; Wang, Minghua; Jia, Qiaojuan; Zhang, Zhihong; Lu, Siyu
Source:
Biosensors & bioelectronics 2019 v.123 pp. 51-58
ISSN:
0956-5663
Subject:
aptasensors; blood serum; chemical species; chemical structure; coordination polymers; dielectric spectroscopy; electrochemistry; humans; ligands; nanosheets; neoplasms; oligonucleotides; tyrosine; zinc; zirconium
Abstract:
... Fabricating novel bimetallic metal organic framework (MOF) architectures and exploiting them as aptasensor scaffolds for detecting diverse analytes, especially cancer markers, have aroused widespread research attention. Herein, we report a novel strategy for obtaining ZnZr bimetallic MOFs via the MOF-on-MOF method and exploit them as an aptasensor platform for detecting the cancer marker protein t ...
DOI:
10.1016/j.bios.2018.09.079

19. Recent advances in metal-organic frameworks for separation and enrichment in proteomics analysis

Author:
Liu, Qianjing; Sun, Nianrong; Deng, Chun-hui
Source:
Trends in analytical chemistry 2019 v.110 pp. 66-80
ISSN:
0165-9936
Subject:
adsorbents; binding sites; chemical species; coordination polymers; immobilized enzymes; ligands; peptides; proteins; proteomics; surface area
Abstract:
... Metal-organic frameworks (MOFs) have been broadly applied to sample preparation which is an essential step in proteomics research. Their large surface area provides abundant binding sites, their specific pore structure can exclude large-sized proteins and allow small molecules to get inside their channels. Besides, the flexible functionalization gives infinite possibilities of MOFs applications in ...
DOI:
10.1016/j.trac.2018.10.033