TY  - JOUR
AU  - Hollo, Berta Barta
AU  - Szecsenyi, Katalin Meszaros
AU  - Deli, Maria
AU  - Kiss, Lorand
AU  - Kallay-Menyhard, Alfred
AU  - Zivkovic-Radovanovic, Vukosava
AU  - Tomić, Zoran D.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1184
AB  - Synthetic paths toward the two polymorphs of a monohydrate, one anhydrous polymorph of 1-carboxamidino-5-hydroxy-3-methylpyrazole (hcmp) and two polymorphs of zinc complexes containing hcmp ligand are presented. By choosing ions which are not part of the final product, it is possible to direct the synthesis toward the particular polymorph. In all three modifications of hcmp, the same hydrogen bonding motif appears, leading to formation of similar molecular chains. Differences arise due to different modes of chain aggregation and the presence of solvent water. Analysis of the crystal packing and the energetic features of hcmp polymorphs is made using the PIXEL model. The thermal decomposition processes are examined using differential scanning calorimetry and thermogravimetry. Analysis of crystal packing in the two polymorphs of zinc complex suggests the key role of the hydrogen bonding capacity of the aqua ligand for the appearance of the two polymorphic forms. In both polymorphs of zinc complex, stacking interactions have an important role. However, the enhanced hydrogen bonding capacity of the aqua ligand influences the formation of multistacking arrangement.
T2  - Structural Chemistry
T1  - Anion-/cation-directed reaction routes to polymorphic forms of a pyrazole-type ligand and its coordination compounds with zinc. Key structural differences between polymorphs
VL  - 27
IS  - 4
SP  - 1121
EP  - 1133
DO  - 10.1007/s11224-015-0734-1
ER  - 

@article{
author = "Hollo, Berta Barta and Szecsenyi, Katalin Meszaros and Deli, Maria and Kiss, Lorand and Kallay-Menyhard, Alfred and Zivkovic-Radovanovic, Vukosava and Tomić, Zoran D.",
year = "2016",
abstract = "Synthetic paths toward the two polymorphs of a monohydrate, one anhydrous polymorph of 1-carboxamidino-5-hydroxy-3-methylpyrazole (hcmp) and two polymorphs of zinc complexes containing hcmp ligand are presented. By choosing ions which are not part of the final product, it is possible to direct the synthesis toward the particular polymorph. In all three modifications of hcmp, the same hydrogen bonding motif appears, leading to formation of similar molecular chains. Differences arise due to different modes of chain aggregation and the presence of solvent water. Analysis of the crystal packing and the energetic features of hcmp polymorphs is made using the PIXEL model. The thermal decomposition processes are examined using differential scanning calorimetry and thermogravimetry. Analysis of crystal packing in the two polymorphs of zinc complex suggests the key role of the hydrogen bonding capacity of the aqua ligand for the appearance of the two polymorphic forms. In both polymorphs of zinc complex, stacking interactions have an important role. However, the enhanced hydrogen bonding capacity of the aqua ligand influences the formation of multistacking arrangement.",
journal = "Structural Chemistry",
title = "Anion-/cation-directed reaction routes to polymorphic forms of a pyrazole-type ligand and its coordination compounds with zinc. Key structural differences between polymorphs",
volume = "27",
number = "4",
pages = "1121-1133",
doi = "10.1007/s11224-015-0734-1"
}

Hollo, B. B., Szecsenyi, K. M., Deli, M., Kiss, L., Kallay-Menyhard, A., Zivkovic-Radovanovic, V.,& Tomić, Z. D.. (2016). Anion-/cation-directed reaction routes to polymorphic forms of a pyrazole-type ligand and its coordination compounds with zinc. Key structural differences between polymorphs. in Structural Chemistry, 27(4), 1121-1133.
https://doi.org/10.1007/s11224-015-0734-1

Hollo BB, Szecsenyi KM, Deli M, Kiss L, Kallay-Menyhard A, Zivkovic-Radovanovic V, Tomić ZD. Anion-/cation-directed reaction routes to polymorphic forms of a pyrazole-type ligand and its coordination compounds with zinc. Key structural differences between polymorphs. in Structural Chemistry. 2016;27(4):1121-1133.
doi:10.1007/s11224-015-0734-1 .

Hollo, Berta Barta, Szecsenyi, Katalin Meszaros, Deli, Maria, Kiss, Lorand, Kallay-Menyhard, Alfred, Zivkovic-Radovanovic, Vukosava, Tomić, Zoran D., "Anion-/cation-directed reaction routes to polymorphic forms of a pyrazole-type ligand and its coordination compounds with zinc. Key structural differences between polymorphs" in Structural Chemistry, 27, no. 4 (2016):1121-1133,
https://doi.org/10.1007/s11224-015-0734-1 . .

TY  - JOUR
AU  - Stanić, Vojislav
AU  - Radosavljević-Mihajlović, Ana S.
AU  - Zivkovic-Radovanovic, Vukosava
AU  - Nastasijević, Branislav J.
AU  - Marinović-Cincović, Milena
AU  - Marković, Jelena P.
AU  - Budimir, Milica
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/466
AB  - Silver doped fluorapatite nanopowders were synthesised by neutralization method, which consists of dissolving Ag2O in solution of HF and H3PO4 and addition to suspension of Ca(OH)(2). The powder XRD, SEM and FTIR studies indicated the formation of a fluorapatite nanomaterials with average length of the particles is about 80 nm and a width of about 15 nm. The FUR studies show that carbonate content in samples is very small and carbonte ions substitute both phosphate and hydroxyl groups in the crystal structure of samples, forming AB-type fluorapatite. Antibacterial studies have demonstrated that all Ag+-doped fluorapatite samples exhibit bactericidal effect against pathogens: Staphylococcus aureus, Micrococcus luteus and Kllebsiela pneumoniae. Antibacterial activity increased with the increase of Ag+ in the samples. The atomic force microscopy studies revealed extensive damage to the bacterial cell envelops in the presence of AW-doped fluorapatite particles which may lead to their death. The synthesized Ag+-doped fluorapatite nanomaterials are promising as antibacterial biomaterials in orthopedics and dentistry. (C) 2015 Elsevier B.V. All rights reserved.
T2  - Applied Surface Science
T1  - Synthesis, structural characterisation and antibacterial activity of Ag+-doped fluorapatite nanomaterials prepared by neutralization method
VL  - 337
SP  - 72
EP  - 80
DO  - 10.1016/j.apsusc.2015.02.065
ER  - 

@article{
author = "Stanić, Vojislav and Radosavljević-Mihajlović, Ana S. and Zivkovic-Radovanovic, Vukosava and Nastasijević, Branislav J. and Marinović-Cincović, Milena and Marković, Jelena P. and Budimir, Milica",
year = "2015",
abstract = "Silver doped fluorapatite nanopowders were synthesised by neutralization method, which consists of dissolving Ag2O in solution of HF and H3PO4 and addition to suspension of Ca(OH)(2). The powder XRD, SEM and FTIR studies indicated the formation of a fluorapatite nanomaterials with average length of the particles is about 80 nm and a width of about 15 nm. The FUR studies show that carbonate content in samples is very small and carbonte ions substitute both phosphate and hydroxyl groups in the crystal structure of samples, forming AB-type fluorapatite. Antibacterial studies have demonstrated that all Ag+-doped fluorapatite samples exhibit bactericidal effect against pathogens: Staphylococcus aureus, Micrococcus luteus and Kllebsiela pneumoniae. Antibacterial activity increased with the increase of Ag+ in the samples. The atomic force microscopy studies revealed extensive damage to the bacterial cell envelops in the presence of AW-doped fluorapatite particles which may lead to their death. The synthesized Ag+-doped fluorapatite nanomaterials are promising as antibacterial biomaterials in orthopedics and dentistry. (C) 2015 Elsevier B.V. All rights reserved.",
journal = "Applied Surface Science",
title = "Synthesis, structural characterisation and antibacterial activity of Ag+-doped fluorapatite nanomaterials prepared by neutralization method",
volume = "337",
pages = "72-80",
doi = "10.1016/j.apsusc.2015.02.065"
}

Stanić, V., Radosavljević-Mihajlović, A. S., Zivkovic-Radovanovic, V., Nastasijević, B. J., Marinović-Cincović, M., Marković, J. P.,& Budimir, M.. (2015). Synthesis, structural characterisation and antibacterial activity of Ag+-doped fluorapatite nanomaterials prepared by neutralization method. in Applied Surface Science, 337, 72-80.
https://doi.org/10.1016/j.apsusc.2015.02.065

Stanić V, Radosavljević-Mihajlović AS, Zivkovic-Radovanovic V, Nastasijević BJ, Marinović-Cincović M, Marković JP, Budimir M. Synthesis, structural characterisation and antibacterial activity of Ag+-doped fluorapatite nanomaterials prepared by neutralization method. in Applied Surface Science. 2015;337:72-80.
doi:10.1016/j.apsusc.2015.02.065 .

Stanić, Vojislav, Radosavljević-Mihajlović, Ana S., Zivkovic-Radovanovic, Vukosava, Nastasijević, Branislav J., Marinović-Cincović, Milena, Marković, Jelena P., Budimir, Milica, "Synthesis, structural characterisation and antibacterial activity of Ag+-doped fluorapatite nanomaterials prepared by neutralization method" in Applied Surface Science, 337 (2015):72-80,
https://doi.org/10.1016/j.apsusc.2015.02.065 . .