Tag: M.W=100-150

Wedel, M. published the artcileSynthesis of metalloporphyrins and metallochlorins for immobilization on electrode surfaces, Safety of 3-(1H-Pyrrol-1-yl)propan-1-ol, the main research area is metalloporphyrin pendant pyrrole phosphonate preparation; metallochlorin pendant pyrrole phosphonate preparation; immobilization metalloporphyrinoid electrode surface.

New metalloporphyrinoid complexes functionalized with two pyrrole groups and bearing two phosphonate residues were synthesized starting from readily accessible deuterioporphyrin derivatives The functional pyrrole groups gave metalloporphyrinoid films on electrodes by oxidative electropolymerization However, the phosphonate functionalities could be used to immobilize the metalloporphyrinoids on polycrystalline TiO2 electrodes. Electrodes modified by immobilization of the metalloporphyrinoid complexes are useful for electrocatalysis and as electrochem. sensors.

European Journal of Organic Chemistry published new progress about Film electrodes. 50966-69-3 belongs to class alcohols-buliding-blocks, name is 3-(1H-Pyrrol-1-yl)propan-1-ol, and the molecular formula is C7H11NO, Safety of 3-(1H-Pyrrol-1-yl)propan-1-ol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Padilha, Carlos Eduardo de Araujo published the artcileSeparation and concentration of bioactive phenolic compounds by solvent sublation using three-liquid-phase system, Computed Properties of 111-87-5, the main research area is bioactive phenolic compound solvent sublation liquid phase system.

The present work investigated the SS performance with focus on the addition of second collecting phase to intensify the separation of vanillin and eugenol. First, experiments were performed with only n-octanol as the only collecting phase and the effects of solutes concentration and pH of the bottom phase were evaluated on the separation efficiency (E%). Then, the SS process was performed in a three-liquid-phase system formed by n-octanol/PEG 400/(NH4)2SO4 and the results were evaluated based on E%, distribution coefficient (D) and vanillin selectivity (RVAN/EUG) values. When compared to single component experiments, the presence of another solute had little effect on the E% values of vanillin and eugenol, regardless of the range of the initial concentration Moreover, in SS with n-octanol/acetate buffer it was possible to reach the highest values of E% for vanillin (53.83%) and eugenol (85.37%) in experiments with pH equal to 4.5. On the other hand, the three-liquid-phase system achieved selectivity at least twice as high as two-liquid-phase systems and D values higher than 25 for vanillin in the PEG 400-rich phase. Thus, SS using three-liquid-phase system appears as an alternative to solve multicomponent separation problems involving bioactive compounds

Food and Bioproducts Processing published new progress about Food processing. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Computed Properties of 111-87-5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Peng, Ke published the artcileGelled non-toxic microemulsions: phase behavior & rheology, Category: alcohols-buliding-blocks, the main research area is gelled non toxic microemulsion phase diagram rheol.

Bicontinuous microemulsions gelled with a low mol. weight gelator have been shown to be an orthogonally self-assembled system. With the mech. stability provided by the gel network, gelled non-toxic bicontinuous microemulsions have the potential to be an efficient transdermal drug delivery carrier. However, up to now no suitable system has been formulated for transdermal drug delivery. To fill this gap, we formulated and characterized a gelled non-toxic bicontinuous microemulsion suitable for the mentioned application. Starting from a previously studied scouting system, namely, H2O-n-octane-n-octyl β-D-glucopyranoside (β-C8G1)-1-octanol, the co-surfactant and the oil were replaced by non-toxic components. Subsequently, the expensive pure surfactant was replaced by cheap tech.-grade surfactants (Plantacare series) to make the system economical. Having formulated the non-toxic microemulsion H2O-IPM-Plantacare 1200 UP-1,2-octanediol, three low mol. weight gelators were studied with regard to the gelation of both the scouting system and the non-toxic system. The chosen gelators were 12-hydroxyoctadecanoic acid (12-HOA), 1,3:2,4-dibenzylidene-D-sorbitol (DBS), and N,N’-dibenzoyl-L-cystine (DBC). We found that only DBS gels the non-toxic microemulsion. The gelled non-toxic bicontinuous microemulsion H2O-IPM-Plantacare 1200 UP-1,2-octanediol was characterized with oscillatory shear rheometry and small-angle neutron scattering (SANS) at a DBS concentration of 0.3 wt% to verify that the system is indeed a gel and that the microstructure of the microemulsion is not altered by the gel network.

Soft Matter published new progress about Gelation agents. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Newell, Grace E. published the artcilePreparation of a clickable monomer compatible with automated PNA synthesis, Category: alcohols-buliding-blocks, the main research area is peptide nucleic acid thymine monomer synthesis; reductive amination PNA monomer incorporation PNA Click chem.

A propargyl-containing Fmoc-protected (Fmoc = 9-fluorenylmethoxycarbonyl) thymine monomer was synthesized for possible use in the pre- or post-functionalization of PNA oligomers via Click chem. The monomer should be suitable for incorporation in normal automated solid phase PNA synthesis. The synthesis is suitable for the preparation of gram-quantities of monomers and uses reductive amination as the key step.

Tetrahedron Letters published new progress about Click chemistry. 22483-09-6 belongs to class alcohols-buliding-blocks, name is 2,2-Dimethoxyethanamine, and the molecular formula is C4H11NO2, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Kumar, Anil published the artcileRotational Diffusion of Medium Sized 7-[Diethylamino]-2H-1-Benzopyran-2-One Molecule in Alcohols: Study of Temperature and Solvent Viscosity Effect, Related Products of alcohols-buliding-blocks, the main research area is diethylamino benzopyranone dipole moment dielec relaxation rotational diffusion fluorescence; Hydrodynamic theories; Laser dye; Point dipole dielectric theories; Reorientation times; Super slip.

The rotational re-orientations times of the 7-[diethylamino]-2H-1-benzopyran-2-one (7-DHB) dye mol. have been examined in ethanol and octanol solvents when macroscopic solvent viscosity parameter is varied by varying the temperature, by employing the steady-state fluorescence depolarisation and Time-Correlated Single Photon Counting (TCSPC) techniques. Exptl. observation shows that 7-DHB probe is experiencing higher friction in octanol compared to ethanol and rotates slower by a factor of 7.3. The hydrodynamic Stokes Einstein’s Debye theory (SED) with a stick, slip boundary conditions parameters, quasi-hydrodynamic models (Dote-Kivelson-Schwartz and Geirer-Wirtz) were used to determine mech. friction and found an interesting towards super slip trend. Dielec. frictional theories of point dipole, Nee-Zwanzig and van der Zwan-Hynes both models fail to describe exptl. observe dielec. friction trends. Evidently, both hydrodynamic and dielec. models failed to explain the examined behavior, even in the qual. way in alcs.

Journal of Fluorescence published new progress about C-N bond length. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Related Products of alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Aghofack-Nguemezi, Jean published the artcileEffects of bio-based coatings on the ripening and quality attributes of tomato (Solanum lycopersicum) fruits, Recommanded Product: 3-(Methylthio)propan-1-ol, the main research area is Solanum fruit ripening quality bio based coating; Solanum lycopersicum; by-products; cocoa; coffee; quality; shelf life.

BACKGROUND : Postharvest conservation of tomatoes is a major current challenge for growers and traders. Edible coatings constitute a pertinent alternative to existing conservation methods. RESULTS : Control tomatoes were fully ripe 3 days after harvesting, whereas fruits dipped in solutions containing extracts from cocoa pods (T1), cocoa leaves (T2) or coffee hulls (T3) reached full ripeness 14 days after treatment (DAT). Fruits treated by dipping in a solution containing an extract from coffee leaves (T4) were fully ripe 21 DAT. The visual assessment was confirmed by alterations in the level of chlorophyll a. Treatments induced a significant inhibition of chlorophyll a breakdown, especially during the first week after their application, T4 being the most efficacious. Weight loss increased significantly throughout the exptl. period and was accelerated by treatments. Some quality-related parameters of ripe tomato fruits were in most cases not significantly influenced by treatments. In a few cases, however, there were improvements in quality traits of ripe fruits. On 21 DAT, T4 induced significant increases in levels of β-carotene and 6-methyl-3,5-heptadien-2-ol, whereas T2 led, especially, to higher levels of volatile compounds CONCLUSION : Edible coatings based on extracts from coffee or cocoa leaves induced improvements in the shelf life and quality of tomato fruits.

Journal of the Science of Food and Agriculture published new progress about Coating process. 505-10-2 belongs to class alcohols-buliding-blocks, name is 3-(Methylthio)propan-1-ol, and the molecular formula is C4H10OS, Recommanded Product: 3-(Methylthio)propan-1-ol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Galla, E. A. published the artcileRIM catalysis and coating interaction, Formula: C7H18N2O, the main research area is polyurethane molding coating; polymerization catalyst polyurethane coating; triethylenediamine polyurethane coating; molding reaction injection polyurethane.

Reaction-injection molded (RIM) polyurethanes containing ≤0.5 phr triethylenediamine (I) [280-57-9] catalyst and Sn cocatalysts can be coated with com. high-solids coatings (e.g. Durethane 300) or water-based coatings. With an exptl. high-solids Durethane Elastomeric Enamel, I can be used at ≤0.15 phr with no adverse effect, and reactive amine cocatalysts [e.g. Me2NCH2CH2N(Me)CH2CH2OH [2212-32-0]] can be added at 0.5 phr. Parts containing >0.15 phr I can be coated after rinsing with H2O or adding a small amount of acid to the primer. An additive which reacts with I during curing, thus preventing interference with coating without affecting curing rate, can be added to parts containing ≤1.0 phr I.

Journal of Elastomers & Plastics published new progress about Coating process. 2212-32-0 belongs to class alcohols-buliding-blocks, name is N2-(2-Hydroxyethyl)-N1,N1,N2-trimethyl-1,2-ethylenediamine, and the molecular formula is C7H18N2O, Formula: C7H18N2O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Galla, E. A. published the artcileRIM catalysis and coating interaction, Recommanded Product: N2-(2-Hydroxyethyl)-N1,N1,N2-trimethyl-1,2-ethylenediamine, the main research area is polyurethane reaction injection molding; catalyst polyurethane molding coating; amine catalyst polyurethane molding; triethylenediamine catalyst polyurethane molding.

The use of high-solids Durethane Elastomeric Enamel and Dabco  [280-57-9] catalyst (≤0.15 phr) enables the reaction-injection molding (RIM) of polyurethanes with no adverse effects on the coating. Other amine catalysts, e.g. Dabco T  [2212-32-0], can be added at ≤0.5 phr as cocatalyst with Dabco and Bu2Sn dilaurate [77-58-7]. Moldings catalyzed with >15 phr Dabco were successfully coated by subjecting the part to a high-temperature water rinse or by adding a small amount of acid to the primer.

Proceedings of the S.P.I. Annual Urethane Division Technical Conference published new progress about Coating process. 2212-32-0 belongs to class alcohols-buliding-blocks, name is N2-(2-Hydroxyethyl)-N1,N1,N2-trimethyl-1,2-ethylenediamine, and the molecular formula is C7H18N2O, Recommanded Product: N2-(2-Hydroxyethyl)-N1,N1,N2-trimethyl-1,2-ethylenediamine.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Yano, Yohko F. published the artcilePeriodic Elastic Motion in a Self-Assembled Monolayer under Spontaneous Oscillations of Surface Tension: Molecules in a Scrum Push Back a Marangoni Flow, Name: n-Octanol, the main research area is self assembled monolayer surface tension Marangoni effect.

Regularly recurring phenomena are a common and important part of life. Such rhythmic behaviors are often seen in nonliving systems under far-from-equilibrium conditions. The study of simple nonliving systems provides clues for improving our understanding of the origin of biol. rhythms. Here, we focus on the spontaneous oscillation of surface tension associated with an intermittent Marangoni convective flow generated by two types of surfactants, those that are partially soluble (long chain alcs.) and insoluble (lipids) in water. In this system, we find that the collective motions of two surfactants interact with each other in a systematic manner to control a stable periodic motion: the alc. mols. (donor) produce a Marangoni flow, and the lipid mols. (acceptor) in a monolayer push the flow back. The shape of the surface tension oscillation can be explained by the viscoelastic properties of the acceptor surfactant, whereas the period of the surface tension oscillation has been explained by the phys. properties of the donor surfactant. A recently developed time-resolved X-ray surface scattering technique enables the dynamic structure of the water surface under flow to be determined We have repeatedly observed that lipid mols. at the air-water interface become regularly oriented normal to the surface at every onset of the Marangoni convective flow.

Journal of Physical Chemistry Letters published new progress about Convective flow. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Name: n-Octanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Zhang, Jingying published the artcileIdentification of Key Aroma Compounds in Cranberry Juices as Influenced by Vinification, Quality Control of 505-10-2, the main research area is cranberry juice vinification aroma compound; GC−MS/O; PCA; SPME; aroma-active; cranberry wine; volatile compounds.

This study aimed to identify the key aroma-active volatiles in cranberry wines through three vinification methods (White, Red and Thermo) using GC-MS/O to identify the important aroma compounds A total of 70 compounds were detected, with 67 in wines and 61 in juices. The esters was the most diversified class, while alcs. and acids were the most abundant, especially 3-methylbutanol, methylbutyric acid, and benzoic acid. The volatile profiles of cranberry wines are distinctive from their source juices. Most alcs., esters, and acids are fermentation-derived, while terpenes, phenols, aldehydes and ketones are varietal. The Red vinification retained the most varietal volatiles from the must, while the White and Thermo vinifications produced more volatiles during fermentation Thermovinification reduced the yield of benzoic acid and its derivatives after fermentation Olfactory anal. identified 47 aroma-active compounds, among which 41 were considered as the major aroma contributors (Et benzoate had the highest modified detection frequency).

Journal of Agricultural and Food Chemistry published new progress about Cranberry juice. 505-10-2 belongs to class alcohols-buliding-blocks, name is 3-(Methylthio)propan-1-ol, and the molecular formula is C4H10OS, Quality Control of 505-10-2.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts