X-ray photoelectron spectra of mixed oxygenated cobalt(II)-amino acid-imidazole complexes

Yatsimirskii, K. B.; Nemoskalenko, V.V.; Aleshin, V. G.; Bratushko, Yu. I.; Moiseenko, E. P.

doi:10.1016/0009-2614(77)80490-9

Cited by 40 publications

(27 citation statements)

References 6 publications

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“…The one with a binding energy of 288.8 eV with FWHM 1.3 eV is assigned to the carbon of the carboxyl group (COO), that at 286.7 eV with a FWHM 1.6 eV to the tertiary carbon, which is connected with the nitrogen atom of the amino group, and the species with lowest binding energy 285.4 eV FWHM 1.6 eV is assigned to the carbon of the methyl group. The almost equal intensity of these three peaks is in accord with previously reported XPS C1s data recorded for solid alanine [31,32] and indicates the presence of a multilayer consisting of intact molecules with the expected stoichiometry. Heating to 300 K results in a significant change of the C1s peak relative intensities.…”

Section: Resultssupporting

confidence: 90%

Probing the interaction of the amino acid alanine with the surface of ZnO

Gao

Traeger

Shekhah

et al. 2009

Journal of Colloid and Interface Science

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Section: Resultssupporting

confidence: 90%

Probing the interaction of the amino acid alanine with the surface of ZnO

Gao

Traeger

Shekhah

et al. 2009

Journal of Colloid and Interface Science

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“…PDVB-NH 2 gave a peak at 399.4 eV, which indicated the presence of the NH 2 group. [52] In comparison, the spectrum of PDVB-SB indicated a peak at 398.9 eV, with a downshift of 0.5 eV from PDVB-NH 2 , which was assigned to the formation of the C=N bond. [53,54] After the loading of Cu(OAc) 2 , the binding energy of N 1s shifted back to 399.4 eV, which indicated the interactions between the Schiff base and Cu(OAc) 2 .…”

Section: Resultsmentioning

confidence: 90%

Copper‐Incorporated Porous Polydivinylbenzene as Efficient and Recyclable Heterogeneous Catalyst in Ullmann Biaryl Ether Coupling

et al. 2013

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The preparation of efficient and stable heterogeneous catalyst is very important for organic transformations. Herein, we report a copper‐incorporated porous, Schiff base‐modified polydivinylbenzene (PDVB‐SB‐Cu) as an excellent heterogeneous catalyst in promoting Ullmann biaryl ether coupling reactions. PDVB‐SB‐Cu was synthesized by incorporating copper species into PDVB‐SB. Combined characterizations by using 13C NMR, IR, XPS, N2 adsorption, and TEM indicated the synthesis of copper–Schiff base species on porous PDVB. Catalytic tests in the Ullmann biaryl ether coupling of iodobenzene and phenol indicated that the PDVB‐SB‐Cu catalyst gave high activity similar to that of the homogeneous Schiff base‐stabilized copper catalyst. This good reactivity was likely due to the polymer‐based porous materials, which provided more effective interactions between substrates and catalytic centers. Importantly, PDVB‐SB‐Cu has extraordinary recyclability. The advantages of high activities and good recyclability made the PDVB‐SB‐Cu catalyst a new class of solid‐support transition metal catalysts for fine chemical preparation.

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“…After immersing the nanowebs in the simulated wound odor fluid, in all the nanofibers, there was an additional peak observed at ∼ 530.70 eV. This peak can be attributed to the presence of carboxylic acids . Although unexpected, after 1 day, neat PCL nanowebs had absorbed wound odor and with a estimated to be about 15%.…”

Section: Resultsmentioning

confidence: 93%

Efficient wound odor removal by β‐cyclodextrin functionalized poly (ε‐caprolactone) nanofibers

Narayanan

Ormond

Gupta

et al. 2015

J of Applied Polymer Sci

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Polymer-cyclodextrin (CD) composite nanofibers, by virtue of the hollow cavities and abundant hydroxyl groups present in CDs, have tremendous potential in a variety of biomedical applications. However, in most cases, especially in aliphatic polyesters, polymer chains thread readily into CD cavities, therefore its potential has not yet been fully realized. Herein, we report the formation of poly(e-caprolactone) (PCL)/b-CD functional nanofibers by electrospinning their mixture from chloroform/N,N-dimethylformamide (60 : 40). The fiber diameters of the neat PCL and b-CD functionalized fibers were measured from the images obtained from a scanning electron microscope and were found to be about 500 nm. The efficiency of wound odor absorbance by these composite fibers was studied using a simulated wound odor solution, consisting of butyric and propionic acids in ethanol. Immersion tests indicated that even under less than ideal test conditions, the nanofibers containing b-CDs were very efficient in masking the odor. The odor masking capability of the b-CD functionalized PCL nanofibers were further confirmed by thermogravimetric analyses and GC observations, with the former method showing unique degradation patterns. The PCL/b-CD nanocomposites, by virtue of having their b-CD cavities free and unthreaded by PCL, could potentially be an ideal substrate for removing wound odors through formation of inclusion compounds with odorants, while providing an ideal environment for the wound to heal. These results suggest tailoring polymer-CD nanostructures for specific applications in wound odor absorbance, surface grafting of chemical moieties, and vehicles for drug delivery, as examples.

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X-ray photoelectron spectra of mixed oxygenated cobalt(II)-amino acid-imidazole complexes

Cited by 40 publications

References 6 publications

Probing the interaction of the amino acid alanine with the surface of ZnO

Probing the interaction of the amino acid alanine with the surface of ZnO

Copper‐Incorporated Porous Polydivinylbenzene as Efficient and Recyclable Heterogeneous Catalyst in Ullmann Biaryl Ether Coupling

Efficient wound odor removal by β‐cyclodextrin functionalized poly (ε‐caprolactone) nanofibers

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