Synthesis and characterization of side-chain maleimide-styrene copolymers with new pendant azobenzene moieties

Nicolescu, Florica Adriana; Jerca, Valentin Victor; Dancus, I.; Petriş, A.; Nicolescu, Tanta Verona; Rău, Ileana; Vlad, V. I.; Vasilescu, Dan Sorin; Vuluga, Dumitru Mircea

doi:10.1007/s10965-010-9501-6

Cited by 17 publications

(11 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The isomerization studies were carried out on cyano-, nitrosubstituted azobenzene archetype molecules, having different substitution pattern, that have been characterized by us elsewhere [29]. Toluene and N,N 0 -dimethylformamide (DMF), spectrophotometric grade were purchase from Merck and used as such.…”

Section: Methodsmentioning

confidence: 99%

Advances in understanding the photoresponsive behavior of azobenzenes substituted with strong electron withdrawing groups

Jerca

Rău

et al. 2015

Optical Materials

Self Cite

View full text Add to dashboard Cite

Section: Methodsmentioning

confidence: 99%

Advances in understanding the photoresponsive behavior of azobenzenes substituted with strong electron withdrawing groups

Jerca

Rău

et al. 2015

Optical Materials

Self Cite

View full text Add to dashboard Cite

“…1) are some poly(methacrylate)s bearing pendant azo moieties (P1, P2 and P3), which were prepared by free radical copolymerization (starting from methyl methacrylate and some original azo-monomers), while the other class of side-chain maleimide-styrene polymers (P4 and P5) have been synthesized from a maleimide-alt-styrene copolymer and some azo-moieties using the polymer analogous reaction. Full synthesis and characterization of both classes of polymers were previously reported by us [7,8]. The poly(methacrylate)s have a ~ 25% chromophore load, while the poly(maleimide-styrene)s have a ~ 40% load.…”

Section: Polymers Used In Our Experimentsmentioning

confidence: 97%

Large optical nonlinearities in copolymers with new pendant azobenzene moieties

Dancus

Vlad

Petriş

et al. 2011

2011 13th International Conference on Transparent Optical Networks

View full text Add to dashboard Cite

show abstract

“…Another thermal technique, DSC, was successfully used in other recent studies [48][49][50][51][52][53][54]. In one of them [52], Ruela et al prepared some MIPs with possible application in nicotine delivery systems, and the DSC analysis showed that the polymer decomposes at *400°C, meaning that the MIPs have a high thermal stability.…”

Section: Introductionmentioning

confidence: 99%

Thermal analyses as tools for proving the molecular imprinting with diosgenin and sclareol in acrylic copolymer matrices

Dima

Nicolae

Iordache

et al. 2015

J Therm Anal Calorim

View full text Add to dashboard Cite

Thermogravimetric analysis (TG), derivative thermogravimetry (DTG), differential scanning calorimetry (DSC), dynamic mechanical thermal analysis, simultaneous differential thermogravimetry (SDT) coupled with mass spectrometry (MS), and pyrolysis coupled with gas chromatography/mass spectrometry (Py-GC/MS) were used to characterize molecularly imprinted polymers (MIPs) obtained with two anti-cancerous template molecules, diosgenin and sclareol, imprinted in acrylonitrileacrylic acid copolymer matrices. First of all, TG analyses revealed a specific mass loss in the temperature range 220-300°C characteristic to diosgenin-MIPs, while for the sclareol-MIPs, the specific interval was 100-240°C. Further, the DSC analyses evidenced two major aspects: first, that the copolymer matrices have a single glass transition temperature (T g ), which confirms the random statistic copolymer structure, an essential characteristic of a homogenous MIP matrix; secondly, both templates influence the T g values of the MIPs, fact that is an additional proof of molecular imprinting. The SDT results confirmed the TG and DSC results and, additionally, proved that the system with higher acrylic acid content generates stronger template-matrix interactions via hydrogen, van der Waals, and other non-covalent forces, fact that appears as an increased thermal stability on the TG curve and a higher maximum for template decomposition on the DTG curve. The MS results evidenced that a single mass fragment, 139 ± 1 m/z, characteristic for the class of steroid sapogenines of which diosgenin belongs, is enough to prove, qualitatively and quantitatively, the molecular imprinting and the template elution. As global conclusion, the applied thermal analyses proved to be exceptional tools for analyzing these molecularly imprinted polymers.

show abstract

Synthesis and characterization of side-chain maleimide-styrene copolymers with new pendant azobenzene moieties

Cited by 17 publications

References 31 publications

Advances in understanding the photoresponsive behavior of azobenzenes substituted with strong electron withdrawing groups

Advances in understanding the photoresponsive behavior of azobenzenes substituted with strong electron withdrawing groups

Large optical nonlinearities in copolymers with new pendant azobenzene moieties

Thermal analyses as tools for proving the molecular imprinting with diosgenin and sclareol in acrylic copolymer matrices

Contact Info

Product

Resources

About