PN-II-ID-PCE-2011-3-0164 (Program IDEI) - Nr.40/5.10.2011

- Cresterea vizibilitatii internationale a grupului de prin publicarea rezultatelor stiintifice in reviste cu indice de impact ridicat

- Formarea de tineri specialisti in domeniul sintezei organice si a polimerilor, cu aplicatii in obtinerea de (nano)compozite hibride destinate unor aplicatii de top.

Obiective stiintifice:

•  proiectarea si sinteza de noi monomeri fotopolimerizabili multifunctionali

•  obtinerea de nanoparticule metalice, oxizi metalici, fileri functionalizati, etc

•  sinteza de copolimeri bloc prin metode moderne (ATRP, microunde, etc)

•  stabilirea corelatiilor intre structura si proprietati, perspective de aplicare

Publicatii

Rezumat/ Etapa 2012

- Pe durata etapei II, s-au sintetizat 16 nanocompozite hibride pe baza de 10 noi monomeri fotopolimerizabili, 4 nanocompozite hibride de tip sol-gel si 3 compozite hibride pe baza de copolimeri dibloc care contin nanoparticule de Ag sau Au (preparate in prealabil sau in situ, prin abordare fotochimica), si cuart, sau ZnO pe unul din capetele copolimerului bloc.
- Toate structurile si nanocompozitele obtinute au fost caracterizate prin metode specifice (RMN, FTIR, UV-vis, TEM, AFM, XPX, SEM/EDX, Zetasizer, raze X) pentru a confirma structura propusa inclusiv caracteristicile ale acestora, in care nanoparticulele incorporate sau fotogenerate in situ au forma diferita ( ex. Au) si dimensiuni medii intre 2 si 38 nm (Au, Ag).
- Rezultatele derivate au fost publicate in 5 lucrari stiintifice si in 13 lucrari comunicate la simpozioane nationale/internationale (lista anexata). De asemenea, o parte din rezultate au fost incluse in teza de doctorat „Noi polimeri acrilici si copolimeri bloc pentru foto(bio)aplicatii”, elaborata de dnd. A. L. Chibac, sub coordonarea Dr. E.C. Buruiana, care a fost sustinuta pe 31 octombrie - 2012 in Institutul de Chimie Macromoleculara „Petru Poni”, Iasi.

Lucrari stiintifice publicate in 2012: 5 (FI total: 15.94; SRI total: 10.967)

1. T. Buruiana, V. Melinte, F. Jitaru, E.C. Buruiana, L. Balan, „Preparation of siloxane-based urethane dimethacrylates carrying carboxylic groups and the effect of silver nanoparticles on the proprties of composite polymer films”, J. Polym. Sci. Part A: Polym. Chem. 50, 874-883 (2012)

2. V. Melinte, T. Buruiana, L. Balan, E.C. Buruiana, „Photocrosslinkable acid urethane dimethacrylates from renewable natural oil and their use in the design of silver/gold polymeric nanocomposites”, React Funct. Polym. 72,252-259 (2012)

3. L. Balan, V. Melinte, T. Buruiana, R. Schneider, L. Vidal, „Controlling the morphology of gold nanoparticles synthesized photochemically in a polymer matrix through photonic parameters” Nanotechnology 23, 415705 (2012)

4. E.C. Buruiana, V. Podasca, T. Buruiana, „Synthesis of block copolymers derived from N-trityl-(S)-serine and pyrene end-labeled poly(methyl methacrylate) or poly(N-isopropylacrylamide) via ATRP”, J. Lumin. 132, 2704-2713 (2012)

5. A. Chibac, V. Melinte, T. Buruiana, L. Balan, E.C. Buruiana, „One-pot synthesis of photocrosslinked sol-gel hybrid composites containing silver nanoparticles in urethane-acrylic matrixes”, Chem. Eng. J. 200-202, 577-588 (2012)

Rezumat/ Perioada: decembrie-2012 - iunie 2013

- S-a continuat cu studiul obtinerii de noi monomeri/macromeri cinamici care au fost utilizati ca si co-monomeri in compozitii dentare fotopolimerizabile, urmarind in principal fotoreactivitatea acestora sub actiunea radiatiei vizibile emisa de o lampa dentara, si proprietatile compozitelor formate (sorbtie de apa, solubilitate in apa, parametri mecanici)
- Utilizand un metacrilat hibrid (sintetizat in laborator) in combinatie cu monomeri cinamici, s-a investigat reactia de copolimerizare indusa de radiatia UV (365 nm) sau radiatia laser (775 nm) cu o durata a pulsului de 200 femtosecunde. S-au caracterizat structurile hibride 2D in prezenta sau absenta de nanoparticule de ZnO (50-100 nm) punandu-se in evidenta proprietatile fluorescente ale scafoldurilor hibride
- S-au obtinut nanoparticule si microfibre pe baza de noi copolimeri bloc (di si tri) continand blocuri de policinamat si poliadamantan/polimetacrilat utilizand procesul de electrofilare al solutiilor polimere.

Lucrari stiintifice publicate in perioada decembrie 2012 – iunie 2013: 3 (FItotal: 5.473)

1. E.C. Buruiana, F. Jitaru, A. Matei, M. Dinescu, T. Buruiana, „Influence of UV irradiation and two photon processing on the cinnamate monomers polymerization and formation of hybrid composites with nanosized ZnO”, Eur. Polym. J. 48, 1976-1987 (2012)

2. E.C. Buruiana, F. Jitaru, V. Melinte, T. Buruiana, „Effect of Cinnamate Comonomers on the Dental Formulation Properties”, J. Appl. Polym. Sci. 127, 2442-2452 (2013)

3. E.C. Buruiana, F. Jitaru, N. Olaru, T. Buruiana ”Preparing and structuring of block copolymers with cinnamate and adamantane moieties” Des. Monom. Polym. 16, 1-13(2013)

Comunicari stiintifice (Oral/Poster) 2013: 1

1. Evaluation of new dimethacrylates used in formation of polymer composites with gold nanoparticles, A. L. Chibac, V. Melinte, T. Buruiana, E.C. Buruiana, 11-th Conference on Colloid and Surface Chemistry,Petru Poni Institute of Macromolecular Chemistry, Iasi, May 9-11, 2013.

Comunicari stiintifice/Postere 2012: 13(4/9)

1. Effect of photopolymerizable urethane dimethacrylates of quaternary type on the properties of dental composites; T. Buruiana, V. Melinte, E.C. Buruiana, POLYCHAR 20 - 20th World Forum on Advanced Materials, March 26-30, 2012, Dubrovnik, Croatia

2. Synthesis and properties of block copolymers with cinnamate units and end capped ZnO; F. Jitaru, E. C. Buruiana,T. Buruiana, A XXXII-a Conferinta Nationala de Chimie, 03-05 octombrie 2012, Calimanesti-Caciulata, Valcea

3. Synthesis of photosensitive amphiphilic block copolymers through modern methods of controlled radical polymerization; V. Melinte, T. Buruiana, A. Chibac, E.C. Buruiana, A XXXII-a Conferinta Nationala de Chimie, 03-05 octombrie 2012, Calimanesti-Caciulata

4. Synthesis of poly(vinyl acetate-co-4-acryloyloxybenzilidene-iminepyrene) and fluorescence study; V. E Podaşcă, E. C. Buruiană, Sesiunea de comunicări ştiinţifice organizată în cadrul Zilelor Universităţii "Alexandru Ioan Cuza”, 25-27 octombrie, 2012, Iasi

5. Synthesis of block copolymers with N-trityl(s)-serine and pyrene end-capped isopropylacrylamide and silver nanoparticles; E.C. Buruiana, Viorica Podasca, T. Buruiana, POLYCHAR 20 World Forum on Advanced Materials, March 26-30, 2012, Dubrovnik, Croatia

6. Photopolymerization of bis-cinnamates used as comonomers for dental resins and characterization of some composites; E.C. Buruiana, F. Jitaru, V. Melinte, T. Buruiana, XXIV IUPAC Symposion on Photochemistry, July 15-20, 2012, Coimbra, Portugal,

7. Preparation of hybrid acid dimethacrylates as photopolymerizable matrix for nanosilver particles; T. Buruiana, V. Melinte, F. Jitaru, L. Balan, E. C. Buruiana; XXIV IUPAC Symposion on Photochemistry, July 15-20, 2012, Coimbra, Portugal

8. Synthesis and characterization of photopolymerizable dental monomers containing phosphonated sequences; V. Melinte, T. Buruiana, E.C. Buruiana, POLYCHAR 20 - 20th World Forum on Advanced Materials, March 26-30, 2012, Dubrovnik, Croatia

9. Synthesis and Properties of Hybrid Composites based on Urethane Oligodimethacrylates and Noble Metal Nanoparticles; T. Buruiana, V. Melinte, A. Chibac, E.C. Buruiana, L. Balan, Vth International Conference on Molecular Materials (Molmat 2012), July 01 – 08, 2012, Barcelona, Spania

10. Fluorescent chemosensors based on pyrene-containing AB-type block copolymers; V. Melinte, T. Buruiana, A. Chibac, E.C. Buruiana, Vth International Conference on Molecular Materials (Molmat 2012), July 01-0.8, 2012, Barcelona, Spania

11. Effect of UV irradiation and two photon processing on the cinnamate monomers polymerization and formation of hybrid composites with micro/nanosized ZnO; E.C. Buruiana, F. Jitaru, A. Matei, M. Dinescu, T. Buruiana, Vth International Conference on Molecular Materials (Molmat 2012), July 01-08, 2012, Barcelona, Spania

12. Synthesis and properties control of hybrid composites derived from UV-curable urethane macromers and silver/gold nanoparticles; T. Buruiana, V. Melinte, F. Jitaru, L. Balan, E. C. Buruiana, 4th Bilateral Symposium on Functional Heterocylic and Heterochain Polymers for Advanced Materials, September 02-07, 2012, Iasi

13. Sinteza copolimerului poli(acetat de vinil-co-4-acriloiloxibenzaldehida) si modificarea acestuia cu unitati de piren; E.C. Buruiana, V. E. Podasca, A XXXII-a Conferinta Nationala de Chimie Calimanesti-Caciulata, 3-5 octombrie 2012, Valcea.