A highly effective ultrafast chemical modification of chitosan/cellulose nanocrystals composite film surface is presented in the present research. Added value properties were achieved by use a few seconds’ treatment with RF-generated low-temperature fluorocarbon plasma. Drastic increase water-repelling character completely natural-based biocomposite foil observed, contact angle reaching up to 1...

The fluorination of 1,4-benzo- and naphthoquinones using [18F]acetylhypofluorite is described. For compounds with electron-donating substituents fair to good radiochemical yields have been reached.

The influence of the dipole polarization carbon film coatings on their secondary electron emission has been studied. It is shown that plasma fluorination with low specific surface resistance obtained in microwave low-pressure ethanol vapor increases work function by 0.6 eV and reduces more than a factor two. results can be used to obtain collectors anti-emission grid electrodes high-power elect...

Selective functionalization reactions of aromatic and heteroaromatic halides with carbon, oxygen, and nitrogen nucleophiles have attracted much attention in the last decades. In addition to typical metal-catalyzed coupling reactions, direct functionalization of aryl halides through the formation of Grignard reagents offer new ways for the efficient construction of biologically interesting carbo...

The application of hypofluorites (fluoroxy-compounds), especially tnfluoromethyl hypofluorite, in the synthesis of fluorinated steroids is described. Hypofluorites are powerful but selective fluorinating agents with unusual electrophilic character. They should find considerable application not only in the synthesis of fluorinated steroids, but for preparation of fluorinated compounds of many di...

Vibronic and vibrational spectra of 2-(2-fluoro-phenyl)-ethylamine (2-FPEA) conformers were measured in a molecular beam by resonant two-photon ionization (R2PI), ultraviolet-ultraviolet hole burning (UV-UV HB) spectroscopy, and ionization-loss stimulated Raman spectroscopy (ILSRS). The measured ILSR spectral signatures in the survey spectra of the amino group region and in the broad spectral r...

Property tuning by fluorination is very effective for a number of purposes, and currently increasingly investigated for aliphatic compounds. An important application is lipophilicity (log P) modulation. However, the determination of log P is cumbersome for non-UV-active compounds. A new variation of the shake-flask log P determination method is presented, enabling the measurement of log P for f...