TY  - JOUR
AU  - Božanić, Dušan K.
AU  - Đoković, Vladimir
AU  - Dimitrijević-Branković, Suzana I.
AU  - Krsmanović, Radenka
AU  - McPherson, Michael
AU  - Nair, P. Sreekumari
AU  - Georges, Michael K.
AU  - Radhakrishnan, Thottackad
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4543
AB  - A sago starch biopolymer with embedded silver nanoparticles has been studied as a material for the prevention of microbial growth. Approximately 8 nm in size, silver nanoparticles have been synthesized by reduction of the silver salt in aqueous solution in the presence of sago starch using sodium borohydride as a reducing agent. The obtained solutions were cast on glass plates to obtain thin supported silver-starch nanocomposite films. The morphology of the nanocomposites was investigated by scanning and transmission electron microscopy. UV-Vis absorption spectroscopy showed that during the film formation a part of the silver nanoparticles has been trapped in the water present in the sample, which enabled their partial oxidation into active Ag(+) species. The oxidation of the silver nanoparticles was confirmed by X-ray photoelectron spectroscopy. The antimicrobial activity tests have shown that the nanocomposite material can be successfully employed to prevent the viability and growth of the common pathogens Staphylococcus aureus, Escherichia coli and Candida albicans. (C) Koninklijke Brill NV, Leiden, 2011
T2  - Journal of Biomaterials Science: Polymer Edition
T1  - Inhibition of Microbial Growth by Silver-Starch Nanocomposite Thin Films
VL  - 22
IS  - 17
SP  - 2343
EP  - 2355
DO  - 10.1163/092050610X539532
ER  - 

@article{
author = "Božanić, Dušan K. and Đoković, Vladimir and Dimitrijević-Branković, Suzana I. and Krsmanović, Radenka and McPherson, Michael and Nair, P. Sreekumari and Georges, Michael K. and Radhakrishnan, Thottackad",
year = "2011",
abstract = "A sago starch biopolymer with embedded silver nanoparticles has been studied as a material for the prevention of microbial growth. Approximately 8 nm in size, silver nanoparticles have been synthesized by reduction of the silver salt in aqueous solution in the presence of sago starch using sodium borohydride as a reducing agent. The obtained solutions were cast on glass plates to obtain thin supported silver-starch nanocomposite films. The morphology of the nanocomposites was investigated by scanning and transmission electron microscopy. UV-Vis absorption spectroscopy showed that during the film formation a part of the silver nanoparticles has been trapped in the water present in the sample, which enabled their partial oxidation into active Ag(+) species. The oxidation of the silver nanoparticles was confirmed by X-ray photoelectron spectroscopy. The antimicrobial activity tests have shown that the nanocomposite material can be successfully employed to prevent the viability and growth of the common pathogens Staphylococcus aureus, Escherichia coli and Candida albicans. (C) Koninklijke Brill NV, Leiden, 2011",
journal = "Journal of Biomaterials Science: Polymer Edition",
title = "Inhibition of Microbial Growth by Silver-Starch Nanocomposite Thin Films",
volume = "22",
number = "17",
pages = "2343-2355",
doi = "10.1163/092050610X539532"
}

Božanić, D. K., Đoković, V., Dimitrijević-Branković, S. I., Krsmanović, R., McPherson, M., Nair, P. S., Georges, M. K.,& Radhakrishnan, T.. (2011). Inhibition of Microbial Growth by Silver-Starch Nanocomposite Thin Films. in Journal of Biomaterials Science: Polymer Edition, 22(17), 2343-2355.
https://doi.org/10.1163/092050610X539532

Božanić DK, Đoković V, Dimitrijević-Branković SI, Krsmanović R, McPherson M, Nair PS, Georges MK, Radhakrishnan T. Inhibition of Microbial Growth by Silver-Starch Nanocomposite Thin Films. in Journal of Biomaterials Science: Polymer Edition. 2011;22(17):2343-2355.
doi:10.1163/092050610X539532 .

Božanić, Dušan K., Đoković, Vladimir, Dimitrijević-Branković, Suzana I., Krsmanović, Radenka, McPherson, Michael, Nair, P. Sreekumari, Georges, Michael K., Radhakrishnan, Thottackad, "Inhibition of Microbial Growth by Silver-Starch Nanocomposite Thin Films" in Journal of Biomaterials Science: Polymer Edition, 22, no. 17 (2011):2343-2355,
https://doi.org/10.1163/092050610X539532 . .

TY  - JOUR
AU  - Đoković, Vladimir
AU  - Krsmanović, Radenka
AU  - Božanić, Dušan K.
AU  - McPherson, Michael
AU  - Tendeloo, Gustaaf Van
AU  - Nair, P. Sreekumari
AU  - Georges, Michael K.
AU  - Radhakrishnan, Thottackad
PY  - 2009
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3760
AB  - Adsorption of sulfide ions onto a surface of starch capped silver nanoparticles upon addition of thioacetamide was investigated. UV-vis absorption spectroscopy revealed that the adsorption of the sulfide ion on the surface of the silver nanoparticles induced damping as well as blue shift of the silver surface plasmon resonance band. Further increase in thioacetamide concentration led to shift of the resonance band toward higher wavelengths indicating the formation of the continuous Ag2S layer on the silver surface. Thus fabricated nanoparticles were investigated using electron microscopy techniques (TEM, HRTEM, and HAADF-STEM) and X-ray photoelectron spectroscopy (XPS), which confirmed their core-shell structure. (C) 2009 Elsevier B.V. All rights reserved.
T2  - Colloids and Surfaces. B: Biointerfaces
T1  - Adsorption of sulfur onto a surface of silver nanoparticles stabilized with sago starch biopolymer
VL  - 73
IS  - 1
SP  - 30
EP  - 35
DO  - 10.1016/j.colsurfb.2009.04.022
ER  - 

@article{
author = "Đoković, Vladimir and Krsmanović, Radenka and Božanić, Dušan K. and McPherson, Michael and Tendeloo, Gustaaf Van and Nair, P. Sreekumari and Georges, Michael K. and Radhakrishnan, Thottackad",
year = "2009",
abstract = "Adsorption of sulfide ions onto a surface of starch capped silver nanoparticles upon addition of thioacetamide was investigated. UV-vis absorption spectroscopy revealed that the adsorption of the sulfide ion on the surface of the silver nanoparticles induced damping as well as blue shift of the silver surface plasmon resonance band. Further increase in thioacetamide concentration led to shift of the resonance band toward higher wavelengths indicating the formation of the continuous Ag2S layer on the silver surface. Thus fabricated nanoparticles were investigated using electron microscopy techniques (TEM, HRTEM, and HAADF-STEM) and X-ray photoelectron spectroscopy (XPS), which confirmed their core-shell structure. (C) 2009 Elsevier B.V. All rights reserved.",
journal = "Colloids and Surfaces. B: Biointerfaces",
title = "Adsorption of sulfur onto a surface of silver nanoparticles stabilized with sago starch biopolymer",
volume = "73",
number = "1",
pages = "30-35",
doi = "10.1016/j.colsurfb.2009.04.022"
}

Đoković, V., Krsmanović, R., Božanić, D. K., McPherson, M., Tendeloo, G. V., Nair, P. S., Georges, M. K.,& Radhakrishnan, T.. (2009). Adsorption of sulfur onto a surface of silver nanoparticles stabilized with sago starch biopolymer. in Colloids and Surfaces. B: Biointerfaces, 73(1), 30-35.
https://doi.org/10.1016/j.colsurfb.2009.04.022

Đoković V, Krsmanović R, Božanić DK, McPherson M, Tendeloo GV, Nair PS, Georges MK, Radhakrishnan T. Adsorption of sulfur onto a surface of silver nanoparticles stabilized with sago starch biopolymer. in Colloids and Surfaces. B: Biointerfaces. 2009;73(1):30-35.
doi:10.1016/j.colsurfb.2009.04.022 .

Đoković, Vladimir, Krsmanović, Radenka, Božanić, Dušan K., McPherson, Michael, Tendeloo, Gustaaf Van, Nair, P. Sreekumari, Georges, Michael K., Radhakrishnan, Thottackad, "Adsorption of sulfur onto a surface of silver nanoparticles stabilized with sago starch biopolymer" in Colloids and Surfaces. B: Biointerfaces, 73, no. 1 (2009):30-35,
https://doi.org/10.1016/j.colsurfb.2009.04.022 . .

TY  - JOUR
AU  - Božanić, Dušan K.
AU  - Đoković, Vladimir
AU  - Bibić, Nataša M.
AU  - Nair, P. Sreekumari
AU  - Georges, M. K.
AU  - Radhakrishnan, T.
PY  - 2009
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3841
AB  - A synthetic procedure for the encapsulation of cadmium selenide (CdSe) nanoparticles in a sago starch matrix is introduced. The nanocomposite was investigated using structural, spectroscopic and thermal, methods. TEM micrographs of the nanocomposite showed spherical CdSe particles of 4-5 nm in size coated with a biopolymer layer. The absorption edges of both the aqueous solution and the thin film of the CdSe-starch nanocomposite were shifted toward lower wavelengths in comparison to the value of the bulk semiconductor. Infrared measurements revealed that the interaction of CdSe nanoparticles and starch chains takes place via OH groups. Although the onset of the temperature of decomposition of CdSe-starch nanocomposite is lower than that of the pure matrix, thermogravimetric analysis also showed that introduction of CdSe nanoparticles significantly reduced starch degradation rate leading to high residual mass at the end of the degradation process. (C) 2009 Elsevier Ltd. All rights reserved.
T2  - Carbohydrate Research
T1  - Biopolymer-protected CdSe nanoparticles
VL  - 344
IS  - 17
SP  - 2383
EP  - 2387
DO  - 10.1016/j.carres.2009.08.018
ER  - 

@article{
author = "Božanić, Dušan K. and Đoković, Vladimir and Bibić, Nataša M. and Nair, P. Sreekumari and Georges, M. K. and Radhakrishnan, T.",
year = "2009",
abstract = "A synthetic procedure for the encapsulation of cadmium selenide (CdSe) nanoparticles in a sago starch matrix is introduced. The nanocomposite was investigated using structural, spectroscopic and thermal, methods. TEM micrographs of the nanocomposite showed spherical CdSe particles of 4-5 nm in size coated with a biopolymer layer. The absorption edges of both the aqueous solution and the thin film of the CdSe-starch nanocomposite were shifted toward lower wavelengths in comparison to the value of the bulk semiconductor. Infrared measurements revealed that the interaction of CdSe nanoparticles and starch chains takes place via OH groups. Although the onset of the temperature of decomposition of CdSe-starch nanocomposite is lower than that of the pure matrix, thermogravimetric analysis also showed that introduction of CdSe nanoparticles significantly reduced starch degradation rate leading to high residual mass at the end of the degradation process. (C) 2009 Elsevier Ltd. All rights reserved.",
journal = "Carbohydrate Research",
title = "Biopolymer-protected CdSe nanoparticles",
volume = "344",
number = "17",
pages = "2383-2387",
doi = "10.1016/j.carres.2009.08.018"
}

Božanić, D. K., Đoković, V., Bibić, N. M., Nair, P. S., Georges, M. K.,& Radhakrishnan, T.. (2009). Biopolymer-protected CdSe nanoparticles. in Carbohydrate Research, 344(17), 2383-2387.
https://doi.org/10.1016/j.carres.2009.08.018

Božanić DK, Đoković V, Bibić NM, Nair PS, Georges MK, Radhakrishnan T. Biopolymer-protected CdSe nanoparticles. in Carbohydrate Research. 2009;344(17):2383-2387.
doi:10.1016/j.carres.2009.08.018 .

Božanić, Dušan K., Đoković, Vladimir, Bibić, Nataša M., Nair, P. Sreekumari, Georges, M. K., Radhakrishnan, T., "Biopolymer-protected CdSe nanoparticles" in Carbohydrate Research, 344, no. 17 (2009):2383-2387,
https://doi.org/10.1016/j.carres.2009.08.018 . .

TY  - JOUR
AU  - Radhakrishnan, T.
AU  - Georges, M. K.
AU  - Nair, P. Sreekumari
AU  - Luyt, Adriaan S.
AU  - Đoković, Vladimir
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3449
AB  - Tri-n-octylphosphine oxide-capped CdS nanoparticles were synthesized with the cadmium(II) complex of thiocarbohydrazide as a precursor. Nanocomposites were prepared by mixing a toluene solution of poly(ethylene oxide) (PEO) and the obtained CdS nanoparticles. The ultraviolet-visible spectroscopy measurements showed a blue shift of the onset of optical absorption, compared to bulk CdS, which confirmed the presence of nanostructured CdS. A transmission electron microscopy micrograph of the nanocomposite depicted that the nanoparticles are well dispersed in the PEO matrix. Differential scanning calorimetry analysis revealed hindered crystallization of PEO in the presence of CdS nanoparticles. It was also found that increasing the nanoparticle content led to the shift of the onset of decomposition of the matrix towards higher temperature.
T2  - Colloid and Polymer Science
T1  - Composites comprising CdS nanoparticles and poly(ethylene oxide): optical properties and influence of the nanofiller content on the thermal behaviour of the host matrix
VL  - 286
IS  - 6-7
SP  - 683
EP  - 689
DO  - 10.1007/s00396-007-1819-1
ER  - 

@article{
author = "Radhakrishnan, T. and Georges, M. K. and Nair, P. Sreekumari and Luyt, Adriaan S. and Đoković, Vladimir",
year = "2008",
abstract = "Tri-n-octylphosphine oxide-capped CdS nanoparticles were synthesized with the cadmium(II) complex of thiocarbohydrazide as a precursor. Nanocomposites were prepared by mixing a toluene solution of poly(ethylene oxide) (PEO) and the obtained CdS nanoparticles. The ultraviolet-visible spectroscopy measurements showed a blue shift of the onset of optical absorption, compared to bulk CdS, which confirmed the presence of nanostructured CdS. A transmission electron microscopy micrograph of the nanocomposite depicted that the nanoparticles are well dispersed in the PEO matrix. Differential scanning calorimetry analysis revealed hindered crystallization of PEO in the presence of CdS nanoparticles. It was also found that increasing the nanoparticle content led to the shift of the onset of decomposition of the matrix towards higher temperature.",
journal = "Colloid and Polymer Science",
title = "Composites comprising CdS nanoparticles and poly(ethylene oxide): optical properties and influence of the nanofiller content on the thermal behaviour of the host matrix",
volume = "286",
number = "6-7",
pages = "683-689",
doi = "10.1007/s00396-007-1819-1"
}

Radhakrishnan, T., Georges, M. K., Nair, P. S., Luyt, A. S.,& Đoković, V.. (2008). Composites comprising CdS nanoparticles and poly(ethylene oxide): optical properties and influence of the nanofiller content on the thermal behaviour of the host matrix. in Colloid and Polymer Science, 286(6-7), 683-689.
https://doi.org/10.1007/s00396-007-1819-1

Radhakrishnan T, Georges MK, Nair PS, Luyt AS, Đoković V. Composites comprising CdS nanoparticles and poly(ethylene oxide): optical properties and influence of the nanofiller content on the thermal behaviour of the host matrix. in Colloid and Polymer Science. 2008;286(6-7):683-689.
doi:10.1007/s00396-007-1819-1 .

Radhakrishnan, T., Georges, M. K., Nair, P. Sreekumari, Luyt, Adriaan S., Đoković, Vladimir, "Composites comprising CdS nanoparticles and poly(ethylene oxide): optical properties and influence of the nanofiller content on the thermal behaviour of the host matrix" in Colloid and Polymer Science, 286, no. 6-7 (2008):683-689,
https://doi.org/10.1007/s00396-007-1819-1 . .

TY  - JOUR
AU  - Radhakrishnan, T.
AU  - Georges, M. K.
AU  - Nair, P. Sreekumari
AU  - Luyt, Adriaan S.
AU  - Đoković, Vladimir
PY  - 2007
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2569
AB  - A synthetic procedure for the preparation of nanocomposite films of sago starch and CdS nanoparticles was introduced. The films were characterized using optical, structural, and thermal techniques. The formation of nanostructured CdS in the starch matrix was confirmed by a blue shift in the onset of absorption in the UV-VIS spectra of the nanocomposites. The average size of the nanoparticles varied from 3.6 to 5 nm, depending on the initial concentration of cadmium acetate during the nanocomposite preparation. Fluorescence measurements of the sago-CdS nanocomposite film showed broad emission in the orange-red part of the spectrum. DSC; and TGA analyses revealed significant effects of CdS nanoparticles on the thermal properties of the starch matrix.
T2  - Journal of Nanoscience and Nanotechnology
T1  - Study of sago starch-CdS nanocomposite films: Fabrication, structure, optical and thermal properties
VL  - 7
IS  - 3
SP  - 986
EP  - 993
DO  - 10.1166/jnn.2007.212
ER  - 

@article{
author = "Radhakrishnan, T. and Georges, M. K. and Nair, P. Sreekumari and Luyt, Adriaan S. and Đoković, Vladimir",
year = "2007",
abstract = "A synthetic procedure for the preparation of nanocomposite films of sago starch and CdS nanoparticles was introduced. The films were characterized using optical, structural, and thermal techniques. The formation of nanostructured CdS in the starch matrix was confirmed by a blue shift in the onset of absorption in the UV-VIS spectra of the nanocomposites. The average size of the nanoparticles varied from 3.6 to 5 nm, depending on the initial concentration of cadmium acetate during the nanocomposite preparation. Fluorescence measurements of the sago-CdS nanocomposite film showed broad emission in the orange-red part of the spectrum. DSC; and TGA analyses revealed significant effects of CdS nanoparticles on the thermal properties of the starch matrix.",
journal = "Journal of Nanoscience and Nanotechnology",
title = "Study of sago starch-CdS nanocomposite films: Fabrication, structure, optical and thermal properties",
volume = "7",
number = "3",
pages = "986-993",
doi = "10.1166/jnn.2007.212"
}

Radhakrishnan, T., Georges, M. K., Nair, P. S., Luyt, A. S.,& Đoković, V.. (2007). Study of sago starch-CdS nanocomposite films: Fabrication, structure, optical and thermal properties. in Journal of Nanoscience and Nanotechnology, 7(3), 986-993.
https://doi.org/10.1166/jnn.2007.212

Radhakrishnan T, Georges MK, Nair PS, Luyt AS, Đoković V. Study of sago starch-CdS nanocomposite films: Fabrication, structure, optical and thermal properties. in Journal of Nanoscience and Nanotechnology. 2007;7(3):986-993.
doi:10.1166/jnn.2007.212 .

Radhakrishnan, T., Georges, M. K., Nair, P. Sreekumari, Luyt, Adriaan S., Đoković, Vladimir, "Study of sago starch-CdS nanocomposite films: Fabrication, structure, optical and thermal properties" in Journal of Nanoscience and Nanotechnology, 7, no. 3 (2007):986-993,
https://doi.org/10.1166/jnn.2007.212 . .