1. A. Kellenberger, D. Ambros, N. Plesu, Scan rate dependent morphology of polyaniline films electrochemically deposited on nickel, International Journal of Electrochemical Science, 9, 2014, 6821-6833
2. R. Cretu, A. Kellenberger, M. Medeleanu, N. Vaszilcsin, Cathodic Hydrogen Evolution Reaction on Gold Catalyzed by Proton-Carriers, International Journal of Electrochemical Science, 9, 2014, 4465-4477
3. R. Cretu, A. Kellenberger, N. Vaszilcsin, Enhancement of hydrogen evolution reaction on platinum cathode by proton carriers, Internationl Journal of Hydrogen Energy, 38(27), 2013, 11685-11694 (IF: 3.548) doi: 10.1016/j.ijhydene.2013.07.004
4. A. Kellenberger, N. Plesu, M. Tara-Lunga Mihali, N. Vaszilcsin, Synthesis of polyaniline nanostructures by electrochemical deposition on niobium, Polymer 54(13), 2013, 3166-3174 (IF: 3.379) doi: 10.1016/j.polymer.2013.04.031
5. N. Plesu, A. Kellenberger, I. Taranu, B.O. Taranu, I. Popa, Impedimetric detection of dopamine on poly(3-aminophenyl boronic acid) modified skeleton nickel electrodes, Reactive & Functional Polymers 73, 2013, 772-778 (IF:2,505), doi: 10.1016/j.reactfunctpolym.2013.03.004
6. M. Bobina, A. Kellenberger, J.-P. Millet, C. Muntean, N. Vaszilcsin, Corrosion resistance of carbon steel in weak acid solutions in the presence of L-histidine as corrosion inhibitor, Corrosion Science, 69, 2013, 389-395 (IF: 3.615) doi: 10.1016/j.corsci.2012.12.020
7. C.C. Vaduva, N. Vaszilcsin, A. Kellenberger, Aromatic amines as protn carriers for catalytic enhancement of hydrogen evolution reaction on copper in acid solution, International Journal of Hydrogen Energy, 37(17), 2012, 12089-12096 (IF: 4.054) doi:10.1016/j.ijhydene.2012.06.042
8. A. Kellenberger, E. Dmitrieva, L. Dunsch, Structure dependence of charged states in "linear" polyaniline as studied by in situ ATR-FTIR spectroelectrochemistry, Journal of Physical Chemistry B, 116(14), 2012, 4377-4385 (IF: 3.696) doi: 10.1021/jp211595n
9. A. Kellenberger, E. Dmitrieva, L. Dunsch, The stabilization of charged states at phenazine-like units in polyaniline under p-doping. An in situ ATR-FTIR spectroelectrochemical study, Physical Chemistry Chemical Physics, 13, 2011, 3411-3420 (IF: 4,116) doi:10.1039/C0CP01264E
10. C.C. Vaduva, N. Vaszilcsin, A. Kellenberger, Catalytic enhancement of hydrogen evolution reaction on copper in the presence of benzylamine, International Journal of Hydrogen Energy, 36(12), 2011, 6994-7001 (IF: 3,945) doi:10.1016/j.ijhydene.2011.03.076
11. M. Dan, V. Pralong, N. Vaszilcsin, A. Kellenberger, N. Duteanu, Electrochemical behavior of YBaCo4O7 in alkaline aqueous solution, Journal of Solid State Electrochemistry, 15(6), 2011, 1227-1233 (IF: 1,821) doi: 10.1007/s10008-010-1189-3
12. N. Plesu, A. Kellenberger, M. Milica, N. Vaszilcsin,
Effect of temperature on the electrochemical synthesis and properties of polyaniline films, Journal of Non-crystalline Solids, 356, 2010, 1081-1088 (IF: 1,449) doi:10.1016/j.jnoncrysol.2010.01.011
13. L. Chazaro-Ruiz, A. Kellenberger, E. Jähne, H.J. Adler, T. Khandelwal, L. Dunsch, In situ ESR-UV-Vis-NIR spectroelectrochemical study of the p-doping of poly[2-(3-thienyl)ethyl acetate] and its hydrolyzed derivatives, Physical Chemistry Chemical Physics, 11(30), 2009, 6505-6513 (IF: 4,064) doi: 10.1039/b904529e
14. L. Chazaro-Ruiz, A. Kellenberger, L. Dunsch, In situ ESR-UV-Vis-NIR and ATR-FTIR spectroelectro-chemical studies on the p-doping of copolymers of 3-methy-lthiophene and 3-hexylthiophene, Journal of Physical Chemistry B,
113(8), 2009, 2310-2316 (IF: 4,189) doi: 10.1021/jp806810r
15. A. Kellenberger, E. Jähne, H.J. Adler, T. Khandelwal, L. Dunsch, In situ FTIR spectroelectrochemistry of poly[2-(3-thienyl)ethyl acetate] and its hydrolyzed derivatives, Electrochimica Acta, 53 (24), 2008, 7054-7060 (IF: 3,078) doi:10.1016/j.electacta.2008.05.025
16. A. Kellenberger, N. Vaszilcsin, W. Brandl, N. Duteanu, Kinetics of hydrogen evolution reaction on skeleton nickel and nickel–titanium electrodes obtained by thermal arc spraying technique, International Journal of Hydrogen Energy,
32 (15), 2007, 3258-3265 (IF: 2,725) doi:10.1016/j.ijhydene.2007.02.028
17. A. Kellenberger, N. Vaszilcsin, W. Brandl, Roughness Factor Evaluation of Thermal Arc Sprayed Skeleton Nickel Electrodes, Journal of Solid State electrochemistry,
{134967579980941}11, 2007, 84-89 (IF: 1,535) doi: 10.1007/s10008-005-0073-z
18. N. Plesu, A. Kellenberger, N. Vaszilcsin, I. Manoviciu, Electrochemical Polymerisation of Aniline on Skeleton Nickel Electrode, Molecular Crystals and Liquid Crystals, 416, 2004, 127-135 (IF: 0,529) doi: 10.1080/15421400490478605
Manifestari stiintifice (extras)
1. A. Kellenberger, N. Plesu, I. Taranu, B.O. Taranu, I. Popa, Nonoxidative impedimetric sensor based on poly(3-aminophenyl boronic acid) modified skeleton nickel electrode for dopamine detection, Fourth Regional Symposium on Electrochemistry of South-East Europe, Ljubljana, Slovenia, 26-30 mai, 2013.
2. A. Kellenberger, N. Plesu, I. Taranu, B.O. Taranu, I. Popa, EIS assays of poly(3-aminophenyl boronic acid) films on platinum electrode, Fourth Regional Symposium on Electrochemistry of South-East Europe, Ljubljana, Slovenia, 26-30 mai, 2013.
3. A. Kellenberger, E. Dmitrieva, L. Dunsch, Charged states in "linear" polyaniline, Third Regional Symposium on Electrochemistry of South-East Europe, Bucuresti, Romania, 13-17 mai, 2012.
4. A. Kellenberger, N. Plesu, M. Mihali, S. Remete, Morphology an properties of polyaniline nanofibers obtained on niobium by potentiodynamic and potentiostatic method, Journées d’Electrochimie 11, Grenoble, Franta, 04-08 iulie, 2011
5. C.C. Vaduva, N. Vaszilcsin, A. Kellenberger, M. Medeleanu, Levelling effect of some aromatic amines on printed circuit copper deposited from acid bath, Journées d’Electrochimie 11, Grenoble, Franta, 04-08 iulie, 2011
6. A. Kellenberger, N. Vaszilcsin, N. Plesu, S. Remete, Polyaniline nanofibers prepared by electrochemical polymerization of aniline on niobium, Second Regional Symposium on Electrochemistry of South-East Europe, Belgrade, Serbia, 6-10 iunie, 2010.
7. A. Kellenberger, E. Dmitrieva, L. Dunsch, Charged states at phenazine units in polyaniline: An in situ ATR-FTIR spectroelectrochemical study, 217th Electrochemical Society Meeting, Vancouver, Canada, 25-30 aprilie, 2010.
8. N. Plesu, M. Mihali, A. Kellenberger, N. Vaszilcsin, Effect of temperature on the electrochemical properties of polyaniline films, Journées d’Electrochimie 09, Sinaia, România, 6-10 iulie 2009.
9. A. Kellenberger, N. vaszilcsin, N. Duteanu, M.Dan, Kinetics of aluminum dissolution reaction in skeleton nickel electrode preparation, 9th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Belgrade, 24-26 septembrie, 2008.
10. A. Kellenberger, N. Vaszilcsin, L. Dunsch, E. Jähne, H.J. Adler, Spectroelectrochemical study of the p-doping of poly(2-(3-thienyl)ethyl acetate) and its derivatives, First Regional Symp. on Electrochemistry of South-East Europe, Rovinj, Croatia May 2008.
11. A. Kellenberger, N. Plesu, N. Vaszilcsin, Polyaniline composite cation-exchange membranes with improved methanol permeability, 11th International Symposium on Polymer Electrolytes, 31 august - 5 septembrie, 2008, Ofir, Portugalia.
12. A. Kellenberger, N. Plesu, M.Dan, N. Vaszilcsin, Preparation and characteriza-tion of PANI-modified anion exchange membrane, Journees d’Electrochimie 07, 2 - 6 iulie, Lyon, Franta
Proiecte de cercetare
1. PN-II-ID-PCE-2012-4-0398: Nou concept de fabricare a electrozilor conductori, transparenti si flexibili pe baza de nanofire de argint/polianilina pentru celule solare
dezvoltarea de electrozi transparenti, conductori si flexibili prin inlocuirea stratului uzual de oxid de indiu si staniu (ITO) folost in constructia celulelor solare cu un strat compozit de polianilina / nanofire de argint.
dezvoltarea unei noi solutii tehnice pentru a reduce rezistenta electrica a stratului de nanofire de argint in punctele de contact prin depunerea unor nanoparticule metalice cu punct de topire scazut cu rol de liant intre nanofirele de argint
prepararea de cerneluri electroconductoare pe baza de nanofire de argint modificate cu nanoparticule de indiu si staniu
2. SEMPAR: Senzori microporosi cu polianilina functionalizata cu grupari pendante, material inovativ utilizabil în identificarea si controlul maladiei Parkinson
Dopamina este o amină biogenică care acţionează ca neuro-transmiţător în creier, implicată în controlul motricităţii – absenţa sa duce la rigiditatea muşchilor, reducerea vitezei mişcărilor şi tremur în stare de repaus. Scăderea concentraţiei de dopamină sub 10 nM indică o boală neuro-degenerativă – ca Parkinson sau schizofrenia.
Detectarea cu precizie a dopaminei la astfel de concentraţii a rămas o problemă de actualitate la nivel mondial chiar dacă în ultimii 30 de ani s-au făcut progrese semnificative în tratarea maladiei. Principala problemă este depistarea precoce a bolii datorată inexistenţei unor metode de laborator rapide şi suficient de sensibile pentru monitorizarea dopaminei.
Scopul proiectului
Realizarea unui biosenzor microporos cu structură şi morfologie controlată (folosit la dozarea dopaminei), obţinut prin depunerea electrochimică a unor filme de polianilină funcţionalizată cu grupări pendante de tip acid boronic pe un suport original - Ni scheletat/ nichel Raney.
Estimarea prin metode de calcul mecano-cuantice (metoda Monte-Carlo) a răspunsului senzorial al electrodului realizat, la diverşi compuşi biomoleculari susceptibili de a fi dozaţi în organismul uman. Se va simula prin această metodă mecanismul de conducţie electronică în sisteme extinse de structuri cu orbitali p delocalizaţi pentru polianilina simplă şi self-doped (funcţionalizată), şi vor fi proiectate structuri moleculare care să maximizeze răspunsul electrozilor realizaţi. Rezultatele simulării vor fi comparate cu datele experimentale obţinute şi se va „ajusta” structura polimerului depus electrochimic astfel încât să corespundă scopului pentru care a fost creat biosenzorul.
