J. Braz. Chem. Soc. vol.14 número1

Using different spectroscopic techniques, the isolated compounds were identified as bergapten, graveolone, xanthotoxin, isopimpinellin, aesculetin dimethyl ether,

Observing the polarization curves of uncoated aluminum alloy 2024-T3 and those with PAni coating in Figure 2, a galvanic contact can be seen at –0.530 V, between the bare alloy and

As sample dilution and acidification were required, both sample and acid were sent to a mixing chamber placed in a lateral port of the selection valve; after thorough mixing, up to

i ) The oxidation of straight chain, aliphatic aldehydes occurs via the hydrated species, the gem-diol. The rates of conversion to the respective carboxylic acids and the quantity of

The mixture was irradiated with UV light for 4 h and then unreacted [Fe(CO) 5 ] and the solvent were evaporated under reduced pressure to dryness, affording a pale yellow solid that

After the formation of the cation radical of perylene Pery +• only a fraction of the sensitizer is regenerated (the rest will be bound to the polymer, as proved by the presence

coordinated to palladium, followed by the heterolysis of the palladium-C-8 bond and the rearrangement of the resulting carbonium ion with a cleavage of the C-2-C-3 bond and

In the case of PANI, hysteresis remained constant, independent of the scan rate, thus, the analysis of the oblique hysteresis contribution was not possible. In order to get more