Several gallium and indium dithiocarboxylate complexes of the type [MenM(S2CR)3−n] (M = Ga, In; n = 0, 1, 2; R = phenyl (Ph), p-tolyl (tol), mesityl (Mes)) have been synthesized. These complexes were characterized by elemental analysis, IR, UV–vis and NMR (1H,13C{1H}) spectroscopy. Structure of...

4-Anilino-5-phenyl-4H-1,2,4-triazole-3-thiol (1) reacted with formaldehyde and different amines to give Mannich bases 2a–i. Treatment of compound 1 with formaldehyde afforded the corresponding 2-hydroxymethyl derivative 3, which upon its reaction with thionyl chloride yielded the corresponding ...

Epigallocatechin gallate (EGCG) is the main polyphenol present in green tea and is also known to possess various beneficial health effects. Extractions of EGCG, epigallocatechin (EGC), epicatechin gallate (ECG), and epicatechin (EC) from green tea were investigated by both conventional hot water...

Diallyl terephthalate (DAT) was radically copolymerized in benzene with vinyl monomers having long-chain alkyl groups, including lauryl methacrylate (LMA), stearyl methacrylate (SMA) and vinyl laurate (VL). In the DAT-LMA copolymerizations, the initial rate was quite high because of high polymer...

The thermal radical curing of four diallylic monomers were studied and was found to be very similar. Dynamic DSC of diallyl orthophthalate (DAOP) showed a strong correlation between the cure rate and the half life temperature of the initiator employed. The extent of allylic cure was found by DSC...

The effect of bulk polymerization temperature on the structure of prepolymers of diallyl phthalate (DAP), diallylisophthalate (DAI) and diallylterephthalate (DAT) was investigated in the temperature range of 80°C–285°C. The degree of unsaturation of the prepolymers of each of the monomers une...

Gel permeation chromatography was used to study the variation in molar mass distribution during benzoyl peroxide initiated polymerization of diallyl 3,6-endomethylene-1,2,3,4-tetrahydrophthalate in benzene solution. Whilst a linear polymer is formed initially, branched chains begin to predominat...

The change in MMD during the polymerization of diallyl isophthalate in bulk and in benzene solution in the presence of benzoyl peroxide is studied by a GPC method from low degrees of conversion (

The excessively brittle diallyl isophthalate (DAIP) resin was toughened using polyarylate (PAr). The cure kinetics and appropriate cure condition were investigated with differential scanning calorimetry. Fracture surfaces showed that phase separation occurred, resulting in a two-phase morphology...

The photophysics of lumichrome, 1-methyllumichrome, and lumiflavin in water solutions have been investigated. Fluorescence lifetimes of 2.7 and 2.2 ns were observed for lumichrome and 1-methyllumichrome, respectively, the corresponding triplet state lifetimes of 17 and 18 μs have been obtained ...

Lumichrome samples were prepared by depositing lumichrome on cellulose from methanol solutions. Diffuse reflectance absorption bands at 354 and 388 nm (shoulder) and the fluorescence band at 460 nm similar to those observed in polar solvents were attributed to a π→π∗ transition. The emission ...

We have investigated the photophysics of lumichrome in the nano cage of reverse micelles by using UV–Vis absorption, fluorescence emission and picosecond time resolved emission spectroscopy. Different polar solvents were used such as water, methanol, dimethylformamide, ethylene glycol and glyce...

The absorption and emission spectroscopic behavior of alloxazine is studied in aqueous solutions at pH 4 (10−4 M HCl) and pH 10 (10−4 M NaOH). At pH 4 only the pure form of alloxazine is present, while at pH 10 about 9% of alloxazine is present in its tautomeric form of isoalloxazine. Absorption...

A series of 4-(1H-benzo[d]imidazol-2-yl)-furazan-3-amines (BIFAs) were prepared in good yields (60–90% for each reaction step) via a novel procedure from aminofurazanyl hydroximoyl chlorides and o-diaminobenzenes. The synthetic sequence was run under mild reaction conditions, it was robust and ...

1-Chloromethylpyrene (1-CMP) has been evaluated as a model mutagen and toxin related to the ultimate electrophiles derived from benzo[a]pyrene and 1-nitropyrene. It was mutagenic to Salmonella (> 100 pg/plate) an exceptionally reactive to DNA when assessed by the 32P-postlabelling technique. 1-C...

Dichlofluanid (N-dichlorofluoromethylthio-N′-dimethyl-N-phenylsulphamide) is used as booster biocide in antifouling paints. The occurrence of dichlofluanid and its metabolite DMSA (N′-dimethyl-N-phenyl-sulphamide) was monitored in seawater and marine sediment from three Greek marinas. Seawater...

The occurrence of three common antifouling biocides (Irgarol, Diuron and dichlofluanid) was investigated, both in winter and summer, in two Italian coastal areas bordering the Tyrrhenian Sea: the Gulf of Napoli (Southern Italy) and the Gulf of La Spezia (Northern Italy).Dichlofluanid was always ...

Tolylfluanid, a phenylsulfamide fungicide, is one of the many pesticides that are frequently detected in crops. Therefore, its health risk is a concern. Micromolar concentrations of tolylfluanid induce chromosomal aberrations and micronuclei in mammalian lymphocytes. The findings prompted us to ...

This paper reports the development and optimization of a method based on vortex assisted matrix solid-phase extraction (VA-MSPD) and gas chromatography with electron capture detection for the evaluation of booster biocides in fish tissues. Some parameters that affect the method performance were ...

Incubation of liver microsomes from phenobarbital-treated rats with norbenzphetamine (I) and its two N-oxidized metabolites, N-hydroxynorbenzphetamine (II) and the corresponding nitrone (III), in the presence of NADPH and molecular oxygen, gave rise to the formation of cytochrome P450 product co...