Vibrational spectra and the structure of medical biopolymers

Zhbankov, R. G.; Firsov, S. P.; Королик, Е. В.; Petrov, P. T.; Lapkovski, M. P.; Tsarenkov, V. M.; Marchewka, M.K.; Ratajczak, H.

doi:10.1016/s0022-2860(00)00590-1

Cited by 51 publications

(22 citation statements)

References 15 publications

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“…The normally difficult to measure Raman spectra of polymeric sugars were recently recorded. Fourier transform Raman spectra 29 of several dextrans of molecular weight 5000, 60 000, and 125 000 Da, in the powder state and in aqueous solutions either with or without alkali metal salts of KI or KCl, were reported. Prominent band maxima were located at 2906, 1463, 1342, 1272, 1131, 919, 852, 543, 433, and 406 cm 1 .…”

Section: Discussionmentioning

confidence: 99%

Surface‐enhanced Raman scattering (SERS) of random silver or gold particle arrays on aminodextran‐coated polystyrene beads

Siiman¹,

Ledis²

2005

J Raman Spectroscopy

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Citrate and/or chemically modified aminodextran (Amdex) SERS bands were detected from silver particleAmdex-polystyrene (PS) beads either as singlets or small clusters, prepared by reaction between aqueous silver nitrate, Amdex-coated PS beads, and aqueous sodium citrate solution. However, citrate on individual silver or gold particles of the same size was not detected with 633-nm excitation. SERS of dyes such as rhodamine 6 G was readily observed on individual silver particles or on the gold beads. Three distinct modes of citrate/modified-Amdex binding to the silver particle-Amdex-PS beads were characterized: (1) exchangeable citrate bound through one or more carboxylate groups -citrate could be washed away with H 2 O or D 2 O; displaced by successively greater concentrations of R6G; or squeezed out mechanically by applying the pressure of a second coverslip on top of a droplet of bead suspension; (2) nonexchangeable Amdex bound to silver via a primary alcoholate ion of oxidized, glutaraldehyde-cross-linked Amdex; and (3) nonexchangeable oxidized Amdex bound to silver via carboxylate group(s) but with H/D exchangeable alcohol hydrogen atom. That oxidation of the glucopyranose residues of Amdex on PS beads had taken place by Ag(I) as silver nitrate in aqueous solution to split out carboxylate groups was first identified from their characteristic vibrational modes in the SERS spectra of colloidal silver suspensions.Minimum amplification factors for (R6G on Ag)/(R6G on Au) with 633-nm excitation were estimated as 1 × 10 15 /1 × 10 11 . An extra SERS enhancement of about 1000-fold due to multiplicity of metal particles per bead was included.

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Section: Discussionmentioning

confidence: 99%

Surface‐enhanced Raman scattering (SERS) of random silver or gold particle arrays on aminodextran‐coated polystyrene beads

Siiman¹,

Ledis²

2005

J Raman Spectroscopy

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“…The band at 1079 cm -1 in the FTIR spectra of RLMP is attributed to the antisymmetric stretching vibration of C(6)-O-C(1) glycosidic bridge. These findings suggest that the 1079 cm -1 band for the Cu(II) complexes with RLMP can be considered as a characteristic for the type of interunit links and for the Ligand-Metal [C(6)-O-Cu(II)] linkage (Shingel, 2002;Zhbankov et al, 2000;b Mitic et al, 2008). In the case of the Cu(II)-RLMP complexes O-H groups participate in the formation of the Cu(II)-RLMP linkages.…”

Section: Resultsmentioning

confidence: 95%

“…The broad peak at 1108 cm -1 should most likely be ascribed to the vibration of the C-O bond at the C(4) position of the glucopyranose units (Kacurakova et al, 1996). Complex vibrations involving the stretching of the C(6)-O(6) bond with participation of the deformational vibrations of the C(4)-C(5) bond result in the appearance of a band at 1079 cm -1 (Sivchik et al, 1979;Nikonenko et al, 2005;Zhbankov et al 2005;a Zhbankov et al, 2003;b Zhbankov et al, 2003;Zhbankov et al, 2000). In the spectra of Cu(II) complex with RLMP band at 1079 cm -1 is less pronounced than in the spectra of RLMP.…”

Section: Resultsmentioning

confidence: 99%

“…The band at 950 cm -1 belongs to the structure-sensitive region, and together with the band at 935 cm -1 , characterizes the type of interunit bonds and angles. The band at 935 cm -1 was recently used to discover the co-existence of α-(1→6) and www.intechopen.com Fourier Transforms -New Analytical Approaches and FTIR Strategies 26 α-(1→4) glycosidic linkages in the pullulan structure (Shingel, 2002;Zhbankov et al, 2000).…”

Section: Resultsmentioning

confidence: 99%

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Analysis of Bioactive Olygosaccharide-Metal Complexes by Modern FTIR Spectroscopy: Copper Complexes

Nikolić¹,

Cakić²

2011

Fourier Transforms - New Analytical Approaches and FTIR Strategies

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“…The research on the spectroscopy and conformations of polysaccharides and model systems was subsequently continued [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]. The IR Fourier and Raman spectra of the basic types of mono-, di-, and polysaccharides and their derivatives were analyzed in detail (together with Polish colleagues from the Institute of Low Temperatures and Structural Studies, Polish Academy of Sciences, Wroclaw).…”

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confidence: 99%

Z. A. Rogovin and the development of research in the spectroscopy and conformations of polysaccharides

Zhbankov

2005

Fibre Chem

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The versatility and originality of Z. A. Rogovins scientific creativity, his temperament, and work capacity significantly affected the evolution of research on the spectroscopy and conformations of polysaccharides, cellulose, in particular, new types of technically valuable derivatives, and on the whole, such a broad class of organic compounds as the carbohydrates.It is important to have a large number of derivatives with additionally incorporated different functional groups for developing research on the spectroscopy of the concrete classes of organic substances. This will allow solving the analytically important problem of setting up a data bank of the characteristic frequencies and intensities to a significant degree. In this respect, collaboration with Z. A. Rogovin and the analysis of the new types and industrially valuable derivatives of cellulose and other polysaccharides obtained under his direction in the Department and in the Problem Laboratory of Chemical Fibres opened up truly unique possibilities. The fact that all of these compounds were obtained for the first time was also especially important. The analysis of their structure and properties and the features of the appearance of the incorporated functional groups in the IR spectra of polysaccharides was pioneering. Since the newly synthesized objects, intermediate products of their synthesis, and model compounds had to be investigated in different aggregate states fibres, films, powders, this made it necessary to develop the optimum methodological conditions of nondestructive spectroscopic analyses.In a comparatively short time, we obtained and interpreted a large number of IR spectra of new types of industrially valuable cellulose derivatives containing chlorine, fluorine, sulfur, and phosphorus atoms, oxime, sulfhydryl, thiocyanate, and other groups, graft copolymers of cellulose with poly-2-methyl-5-vinylpyridine, carbochain polymers, complexing graft copolymers of cellulose with polyacrylohydroxamic acid, etc.The studies of the IR spectra of these compounds were extensively treated in our first monograph Infrared Spectra of Cellulose and Its Derivatives (1964). An updated and expanded version was published in English in New York in 1966 [1, 2]. The spectra of fibrous cellulose materials were obtained for the first time without using immersion media, with the method of direct modeling of fibres obtained abroad, called the Russian method. An extensive table of the characteristic frequencies of the different groups and bonds in the molecules of cellulose and its derivatives and the first atlas of the types of cellulose, products of its physical and chemical modification, the most important types of mono-, di-, and polysaccharides, and polyhydric alcohols is given in the book.The use of IR spectroscopy in this stage led to important conclusions; incorporation of bulky substituents, ester groups in particular, in the structure of cellulose does not lead to the appearance of hydroxyl groups free of hydrogen bonds, as was believed at the time; natural ...

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Vibrational spectra and the structure of medical biopolymers

Cited by 51 publications

References 15 publications

Surface‐enhanced Raman scattering (SERS) of random silver or gold particle arrays on aminodextran‐coated polystyrene beads

Surface‐enhanced Raman scattering (SERS) of random silver or gold particle arrays on aminodextran‐coated polystyrene beads

Analysis of Bioactive Olygosaccharide-Metal Complexes by Modern FTIR Spectroscopy: Copper Complexes

Z. A. Rogovin and the development of research in the spectroscopy and conformations of polysaccharides

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