Tag: M.W=300-350

Li, Ziyong published the artcileDicyanovinyl-substituted D-A type dithienylethenes: Synthesis, photochromism and colorimetric sensing for cyanide anion, Name: 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene, the publication is Optical Materials (Amsterdam, Netherlands) (2019), 109235, database is CAplus.

A series of novel dithienylethene-based colorimetric sensors 1a-1d with a typical donor-acceptor structure have been successfully developed, which exhibited solvent-dependent photochromic properties in solution, as well as high selectivity and sensitivity for the naked-eye detection of cyanide anion in 95% aqueous CH₃CN media. Moreover, it was found that different structures had a noteworthy effect on both their photochromic properties and colorimetric sensing for CN^–. The sensing mechanism based on the nucleophilic addition reaction with CN^– was confirmed by absorption spectral studies, ¹H NMR titration and DFT calculations Among them, the sensor 1b displayed highly sensitive to CN^– (35 s) and lower detection limit (0.25μM), which can be utilized as a potential colorimetric sensor for CN^– in our daily life and environment.

Optical Materials (Amsterdam, Netherlands) published new progress about 219537-97-0. 219537-97-0 belongs to chlorides-buliding-blocks, auxiliary class Fused/Partially Saturated Cycles,Cyclopentenes, name is 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene, and the molecular formula is C15H14Cl2S2, Name: 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Baj, Stefan published the artcileTri-liquid system in the synthesis of dialkyl peroxides using tetraalkylammonium salts as phase-transfer catalysts, Name: N-Benzyl-N,N-dibutylbutan-1-aminium chloride, the publication is Applied Catalysis, A: General (2010), 385(1-2), 208-213, database is CAplus.

A highly effective method to synthesize dialkyl peroxides from alkyl hydroperoxides and alkyl bromides in a liquid-liquid-liquid system using tetraalkylammonium salts as phase-transfer catalysts is reported. This process was conducted in the presence of highly concentrated aqueous KOH solutions and cyclohexane as an organic solvent. In a liquid-liquid-liquid system, the phase-transfer catalyst forms an insoluble third-liquid phase between the organic and aqueous phases that enables the catalyst to be recycled multiple times. Dialkyl peroxides were obtained in high yields and with 100% selectivity.

Applied Catalysis, A: General published new progress about 23616-79-7. 23616-79-7 belongs to chlorides-buliding-blocks, auxiliary class Phase Transfer Catalyst, name is N-Benzyl-N,N-dibutylbutan-1-aminium chloride, and the molecular formula is C19H34ClN, Name: N-Benzyl-N,N-dibutylbutan-1-aminium chloride.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Baj, Stefan published the artcileSynthesis of peroxyesters in tri-liquid system using quaternary onium salts and polyethylene glycols as phase-transfer catalysts, HPLC of Formula: 23616-79-7, the publication is Applied Catalysis, A: General (2012), 184-189, database is CAplus.

A mild and efficient method for the synthesis of organic peroxyesters from acid chlorides and tertiary alkyl hydroperoxides in the presence of aqueous solution of inorganic base is described. The process was conducted in a tri-liquid system using quaternary onium salts and polyethylene glycols as phase-transfer catalysts. A model reaction of cumyl hydroperoxide (CHP) with butyryl chloride was investigated under a wide range of conditions. Selected peroxyesters were obtained in moderate to high yields (62-93%).

Applied Catalysis, A: General published new progress about 23616-79-7. 23616-79-7 belongs to chlorides-buliding-blocks, auxiliary class Phase Transfer Catalyst, name is N-Benzyl-N,N-dibutylbutan-1-aminium chloride, and the molecular formula is C19H34ClN, HPLC of Formula: 23616-79-7.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Ghosh, Biswajit published the artcileMolecular Interactions of Some Bioactive Molecules Prevalent in Aqueous Ionic Liquid Solutions at Different Temperatures Investigated by Experimental and Computational Contrivance, Category: chlorides-buliding-blocks, the publication is Fluid Phase Equilibria (2022), 113415, database is CAplus.

The solute -solvent interaction between ionic liquids (ILs) and amino acids (AA) in aqueous media plays a significant role for the optimization of a number of important biotechnol. processes. L-Valine and L-Proline (two solute mols.) interact with an ionic liquid (Benzyltributylammonium chloride) in aqueous medium. Based on the different parameters such as apparent molar volume, viscosity B-coefficient, molar refraction, molar conductance at different temperatures and different concentrations from d., viscosity, refractive index, conductance measurements have been used to explain the mol. level interactions which was supported by NMR and UV-Vis studies. Using Masson equation, the exptl. slopes and the limiting apparent molar volumes are obtained which explain the solute-solute and solute-solvent interactions. Hepler’s technique and dB/dT values have been used to examine the structure-making and structure-breaking nature of the solutes in the solvents. Viscosity parameters, A and B obtained from Jones-Doles equation explained the solute-solute and solute-solvent interactions in the solution Lorentz-Lorenz equation has used to calculate the molar refraction. The specific conductance also explained the interaction properties. Further the findings have been supported by NMR study of the solutions and also considerable amount of theor. anal. has been done which was in good agreement with the exptl. result. The behavior of many other bio-mols. can be explained by considering amino acids as model and the mechanism has been extended to elucidate the behavior of other (biol.) systems. In our findings we were emphasized on the nature of solute-solvent interactions and the presence of structural effect on the solvent in solution to analyze the mol.-level interactions prevalent in the systems.

Fluid Phase Equilibria published new progress about 23616-79-7. 23616-79-7 belongs to chlorides-buliding-blocks, auxiliary class Phase Transfer Catalyst, name is N-Benzyl-N,N-dibutylbutan-1-aminium chloride, and the molecular formula is C19H34ClN, Category: chlorides-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Piao, Xijun published the artcileMultiresponsive Switchable Diarylethene and Its Application in Bioimaging, Related Products of chlorides-buliding-blocks, the publication is Organic Letters (2009), 11(17), 3818-3821, database is CAplus and MEDLINE.

A multiresponsive fluorescent switch based on diarylethene and terpyridine units was developed. It exhibits effective switchable fluorescence which can be controlled by UV/visible light or metal ion/EDTA in solution More importantly, having low toxicity, it can enter live cells as a fluorescent probe and can also serve as a detector for the biol. process of metal ion transmembrane transport.

Organic Letters published new progress about 219537-97-0. 219537-97-0 belongs to chlorides-buliding-blocks, auxiliary class Fused/Partially Saturated Cycles,Cyclopentenes, name is 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene, and the molecular formula is C15H14Cl2S2, Related Products of chlorides-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Xiao, Shuzhang published the artcileA photochromic fluorescent switch in an organogel system with nondestructive readout ability, Product Details of C15H14Cl2S2, the publication is Chemical Communications (Cambridge, United Kingdom) (2007), 4758-4760, database is CAplus and MEDLINE.

A fluorescent organogel based on photochromic dithienylethene was obtained, whose optimal excitation wavelength (470 nm) results in little structural change of both open and closed isomers of diarylethene, thus presenting the first example of a fluorescent switch with non-destructive readout ability in the gel state.

Chemical Communications (Cambridge, United Kingdom) published new progress about 219537-97-0. 219537-97-0 belongs to chlorides-buliding-blocks, auxiliary class Fused/Partially Saturated Cycles,Cyclopentenes, name is 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene, and the molecular formula is C5H10N2OS, Product Details of C15H14Cl2S2.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Yuan, Yucheng published the artcileReversible photo-switching of dual-color fluorescent Mn-doped CdS-ZnS quantum dots modulated by diarylethene molecules, Quality Control of 219537-97-0, the publication is Frontiers in Chemistry (Lausanne, Switzerland) (2019), 145pp., database is CAplus and MEDLINE.

A highly reversible dynamic hybrid system was established by mixing dual-color emitting Mn-doped CdS-ZnS quantum dots (QDs) with photo-switchable diarylethene mols. The diarylethene 1,2-bis(5-(3,5-bis(trifluoromethyl)phenyl)-2-methylthiophen-3-yl)cyclopent-1-ene I performed fabulous photo-switching property and high fatigue resistance in this hybrid system. The emission color switching between blue and pink of the system can be induced mainly by selective quenching/recovering of the Mn- photoluminescence (PL) of the QDs due to the switchable absorbance of the mol. I. Mechanistic studies showed that quenching of QD emission following UV illumination was caused by both Forster resonance energy transfer (FRET) and reabsorption by surrounding II mols. in the case of the Mn-PL and solely by reabsorption in the case of badngap-(BG-)PL. This photo-switchable system could be potentially used in applications ranging from self-erasing paper to super-resolution fluorescence imaging.

Frontiers in Chemistry (Lausanne, Switzerland) published new progress about 219537-97-0. 219537-97-0 belongs to chlorides-buliding-blocks, auxiliary class Fused/Partially Saturated Cycles,Cyclopentenes, name is 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene, and the molecular formula is C8H4ClF3O, Quality Control of 219537-97-0.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Cai, Xunzhi published the artcilePhotochromic dithienylethene-branched triptycene hybrids, Recommanded Product: 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene, the publication is Dyes and Pigments (2015), 227-234, database is CAplus.

Dithienylethene and triptycene both have controllable structure and versatile performances. In this study, a series of triptycene hybrids decorated with different number of dithienylethene units have been developed for photochromic switch. The synthetic process is facile and efficient and all new compounds were clearly characterized by ¹H NMR, ¹³C NMR and HRMS. Their photochromism and spectroscopic properties have been investigated in dichloromethane and THF. The result revealed that the multi-dithienylethene units grafted to triptycene behaved independently and showed distinctive solvent-dependent photochromism in chloride solvents, which probably due to the introduction of controlled spatial arrangement of triptycene core. These distinctive characteristics might be potential used for high-d. multicomponent switches and detection of chloride solvents.

Dyes and Pigments published new progress about 219537-97-0. 219537-97-0 belongs to chlorides-buliding-blocks, auxiliary class Fused/Partially Saturated Cycles,Cyclopentenes, name is 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene, and the molecular formula is C15H14Cl2S2, Recommanded Product: 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Kwasny, Michael T. published the artcileThermodynamics of counterion release is critical for anion exchange membrane conductivity, HPLC of Formula: 23616-79-7, the publication is Journal of the American Chemical Society (2018), 140(25), 7961-7969, database is CAplus and MEDLINE.

As the field of anion exchange membranes (AEMs) employs an increasing variety of cations, a critical understanding of cation properties must be obtained, especially as they relate to membrane ion conductivity Here, to elucidate such properties, metal cation-based AEMs, featuring bis(norbornene) nickel, ruthenium, or cobalt complexes, were synthesized and characterized. In addition, isothermal titration calorimetry (ITC) was used to probe counterion exchange thermodn. in order to understand previously reported differences in conductivity The ion conductivity data reported here further demonstrated that nickel-complex cations had higher conductivity as compared to their ruthenium and cobalt counterparts. Surprisingly, bulk hydration number, ion concentration, ion exchange capacity, and activation energy were not sufficient to explain differences in conductivity, so the thermodn. of metal cation-counterion association were explored using ITC. Specifically, for the nickel cation as compared to the other two metal-based cations, a larger thermodn. driving force for chloride counterion release was observed, shown through a smaller ΔH_tot for counterion exchange, which indicated weaker cation-counterion association The use of ITC to study cation-counterion association was further exemplified by characterizing more traditional AEM cations, such as quaternary ammoniums and an imidazolium cation, which demonstrated small variances in their enthalpic response, but an overall ΔH_tot similar to that of the nickel-based cation. The cation hydration, rather than its hydration shell or the bulk hydration of the membrane, likely played the key role in determining the strength of the initial cation-counterion pair. This report identifies for the first time how ITC can be used to exptl. determine thermodn. quantities that are key parameters for understanding and predicting conductivity in AEMs.

Journal of the American Chemical Society published new progress about 23616-79-7. 23616-79-7 belongs to chlorides-buliding-blocks, auxiliary class Phase Transfer Catalyst, name is N-Benzyl-N,N-dibutylbutan-1-aminium chloride, and the molecular formula is C19H34ClN, HPLC of Formula: 23616-79-7.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Rameshbabu, Krishnamurthy published the artcileSelf-organized photochromic dithienylcyclopentene organogels, Product Details of C15H14Cl2S2, the publication is Journal of Materials Chemistry (2011), 21(39), 15673-15677, database is CAplus.

A series of photochromic organogelators based on dithienylcyclopentene amides with a phenylene unit as a bridge between the amide and long alkyl chain were synthesized, their gelation behaviors were characterized by rheol., FT-IR, ¹H NMR, SEM, optical microscopy, UV-Vis and fluorescence spectroscopy. These organogelator mols. were found to be able to induce gelation in apolar solvents such as benzene, toluene and p-xylene to form entangled networks driven by intermol. hydrogen bonding together with π-π interactions. Their excellent reversible photochromism with thermal stability in both solution and gel states was observed, and the thermally reversible property in sol-gel transition was exhibited.

Journal of Materials Chemistry published new progress about 219537-97-0. 219537-97-0 belongs to chlorides-buliding-blocks, auxiliary class Fused/Partially Saturated Cycles,Cyclopentenes, name is 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene, and the molecular formula is C15H14Cl2S2, Product Details of C15H14Cl2S2.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics