Tag: M.W=300-350

Hu, Fang published the artcileCyanine-based dithienylethenes: synthesis, characterization, photochromism and biological imaging in living cells, COA of Formula: C15H14Cl2S2, the publication is RSC Advances (2015), 5(8), 5982-5987, database is CAplus.

Photochromic materials have been widely used in many fields such as electro-optical functional materials and novel bio-materials. In this study, six cyanine-based dithienylethene compounds were successfully developed, and their photoisomerization and emission change properties were fully investigated. The results indicated that the UV/vis absorption of pyridinium-based compounds displayed near-IR absorption, while their fluorescence showed quenching emission as a result of the changes in structure from open-ring isomers to closed-ring isomers. Therefore these cyanine-based compounds could be applied not only in photochromic materials, but also they could be used as fluorescence switches. Accordingly, one of these compounds was successfully used in the biol. imaging of living cells. These results suggest that cyanine-based dithienylethenes may be used as photoswitchable bio-materials in the future.

RSC Advances 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, COA of Formula: C15H14Cl2S2.

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

Park, Jihye published the artcileControlled Generation of Singlet Oxygen in Living Cells with Tunable Ratios of the Photochromic Switch in Metal-Organic Frameworks, Category: chlorides-buliding-blocks, the publication is Angewandte Chemie, International Edition (2016), 55(25), 7188-7193, database is CAplus and MEDLINE.

Development of a photosensitizing system that can reversibly control the generation of singlet oxygen (¹O₂) is of great interest for photodynamic therapy (PDT). Recently several photosensitizer-photochromic-switch dyads were reported as a potential means of the ¹O₂ control in PDT. However, the delivery of such a homogeneous mol. dyad as designed (e.g., optimal molar ratio) is extremely challenging in living systems. Herein we show a Zr-MOF nanoplatform, demonstrating energy transfer-based ¹O₂ controlled PDT. Our strategy allows for tuning the ratios between photosensitizer and the switch mol., enabling maximum control of ¹O₂ generation. Meanwhile, the MOF provides proximal placement of the functional entities for efficient intermol. energy transfer. As a result, the MOF nanoparticle formulation showed enhanced PDT efficacy with superior ¹O₂ control compared to that of homogeneous mol. analogs.

Angewandte Chemie, International Edition 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, Category: chlorides-buliding-blocks.

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

Pijper, Thomas C. published the artcilePosition and Orientation Control of a Photo- and Electrochromic Dithienylethene Using a Tripodal Anchor on Gold Surfaces, Synthetic Route of 219537-97-0, the publication is Journal of Physical Chemistry C (2015), 119(7), 3648-3657, database is CAplus.

A tripodal system for anchoring photochromic dithienylethenes on gold surfaces is reported. The self-assembled monolayers of a tripod-functionalized dithienylethene were characterized by cyclic voltammetry, surface-enhanced Raman spectroscopy (SERS), and XPS. These data are compared with solution studies, solid state Raman spectroscopy, and d. functional theory (DFT) calculations We show that the tripod-functionalized dithienylethene forms stable monolayers on gold in which all three legs of the tripod are adsorbed via the thiol units, thus providing a fixed position and orientation of the dithienylethene moiety with respect to the surface. Importantly, immobilization in this way allows for retention of both the photochem. and electrochem. functionality of the dithienylethene unit and reduces photochem. fatigue observed in solution

Journal of Physical Chemistry C 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, Synthetic Route of 219537-97-0.

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

Rezaeifard, Abdolreza published the artcileBenzyltributylammonium periodate as a novel and safe oxygen source for Mn-porphyrin catalyzed practical and highly selective oxygenation of hydrocarbons, SDS of cas: 23616-79-7, the publication is Polyhedron (2011), 30(13), 2303-2309, database is CAplus.

Benzyltributylammonium periodate (BzBu₃NIO₄) was prepared easily in high yield in neat water. The compound crystallized with two cations and two anions per asym. unit and a space group of Pna2₁ was determined by single-crystal x-ray diffraction. It was used practically in the clean and selective epoxidation of olefins and oxygenation of saturated hydrocarbons catalyzed by manganese (III) porphyrins in water/ethanol as a green media. The catalyst could be reused without noticeable loss of activity, and the oxidant’s byproduct (BzBu₃NIO₃) could also be reused. The efficiency of the oxidation system depends critically upon the steric hindrances and electronic structures of both the nitrogen donors and Mn-catalysts. Some evidences suggest the involvement of a high valent Mn-oxo species as well as a six-coordinate [(L)(Por)Mn-OIO₃] complex in the oxidation reactions.

Polyhedron 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, SDS of cas: 23616-79-7.

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

Pola, R. published the artcileThe pH-dependent and enzymatic release of cytarabine from hydrophilic polymer conjugates, HPLC of Formula: 42074-68-0, the publication is Physiological Research (Prague, Czech Republic) (2016), 65(Suppl. 2), S225-S232, database is CAplus.

Cytarabine is one of the most efficient drugs in the treatment of hematol. malignancies. In this work, we describe the synthesis and characterization of two different polymer conjugates of cytarabine that were designed for the controlled release of cytarabine within the leukemia cells. Reactive copolymers of N-(2-hydroxypropyl)methacrylamide (HPMA) and 3-(3-methacrylamidopropa-noyl)thiazolidine-2-thione) or 3-(N-methacryloylglycyl-phenylalanylleucylglycyl)thiazolidine-2-thione were used in the study as reactive polymer precursors for reaction with cytarabine. The enzymic release of cytarabine from the conjugate containing a GFLG spacer utilizing cathepsin B was verified. In addition to enzymolysis, the pH-dependent hydrolysis of cytarabine from both copolymers was also confirmed. Approx. 40 % and 20 % of the drug was released by spontaneous hydrolysis at pH 7.4 within 72 h from the polymer conjugates with the GFLG and beta-Ala spacers, resp. At pH 6.0, the spontaneous hydrolysis slowed down, and less than 10 % of the drug was liberated within 72 h. The results of the cytotoxicity evaluation of the polymer conjugates in vitro against various cell lines showed that the cytotoxicity of the polymer conjugates is approx. three times lower in comparison to free cytarabine.

Physiological Research (Prague, Czech Republic) published new progress about 42074-68-0. 42074-68-0 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Benzyl chloride,Benzene, name is 2-Chlorotrityl chloride, and the molecular formula is C19H14Cl2, HPLC of Formula: 42074-68-0.

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

Dragu, Eugenia Andreea published the artcileVisible-light triggered photoswitching systems based on fluorescent azulenyl-substituted dithienylcyclopentenes, Computed Properties of 219537-97-0, the publication is RSC Advances (2015), 5(78), 63282-63286, database is CAplus.

Novel azulenyl functionalized dithienylethenes were synthesized, and their photochromic reactivity, fluorescent and electrochem. properties were investigated. By tailoring the conventional dithienylcyclopentene chromophore with azulene groups, the photocyclization occurred with 405 nm wavelength light irradiation These compounds exhibited relatively strong fluorescence at 524 nm when excited at 360 nm, which decreased along with the photocyclization. Furthermore, their electrochem. oxidation induced cyclization.

RSC Advances 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, Computed Properties of 219537-97-0.

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

Kobayashi, Masahiro published the artcileO-glycosylation of 4-(substituted benzyl)-1,2-dihydro-3H-pyrazol-3-one derivatives with 2,3,4,6-tetra-O-acyl-α-D-glucopyranosyl bromide via N¹-acetylation of the pyrazole ring, Synthetic Route of 23616-79-7, the publication is Chemical & Pharmaceutical Bulletin (2016), 64(7), 1009-1018, database is CAplus and MEDLINE.

A practical preparation of 4-(substituted benzyl)-3-(2,3,4,6-tetra-O-acyl-β-D-glucopyranosyloxy)-1H-pyrazole derivative is described. O-Glycosylation of 4-(substituted benzyl)-1,2-dihydro-3H-pyrazol-3-one derivative was facilitated by introduction of electron-withdrawing substituents, such as an acetyl group, at the N1-position of the pyrazole ring. 1-Acetyl-4-(substituted benzyl)-1,2-dihydro-3H-pyrazol-3-one reacted with 2,3,4,6-tetra-O-acyl-α-D-glucopyranosyl bromide in the presence of potassium carbonate in acetonitrile to provide the 1-acetyl-4-(substituted benzyl)-3-(2,3,4,6-tetra-O-acyl-β-D-glucopyranosyloxy)-1H-pyrazole derivative in high yield. The synthetic intermediate of Remogliflozin etabonate was synthesized using this strategy.

Chemical & Pharmaceutical Bulletin 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, Synthetic Route of 23616-79-7.

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

Zhang, Haining published the artcileA solid-state fluorescence switch based on triphenylethene-functionalized dithienylethene with aggregation-induced emission, Recommanded Product: 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene, the publication is Frontiers in Chemistry (Lausanne, Switzerland) (2021), 665880, database is CAplus and MEDLINE.

In this contribution, three novel triphenylethene-functionalized dithienylethenes I (R = H, OMe, CF₃) have been designed and prepared by appending triphenylethene moieties at one end of dithienylethene unit. They display good photochromic behaviors with excellent fatigue resistance upon irradiation with UV or visible light in THF (THF) solution Before irradiation with UV light, they exhibit aggregation induced emission (AIE) properties and luminescence behaviors in the solid state. Moreover, upon alternating irradiation with UV/visible light, they display effective fluorescent switching behaviors in the aggregated state and the solid state. The exptl. results have been validated by the d. functional theory (DFT) calculations Thus, they can be utilized as novel fluorescence switches integrated in smart, solid-state optoelectronic materials and photopharmacol.

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 C6H8N2O2, 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

Li, Ziyong published the artcileVisible light-activated optical switching behaviors of tetra-/triphenylethene-dithienylethene-BF₂bdk triad, Synthetic Route of 219537-97-0, the publication is Dyes and Pigments (2020), 108686, database is CAplus.

Developing new visible light-triggered fluorescent mol. photoswitches is highly desirable for potential application in the fields of photoresponsive optoelectronics and photopharmacol. In this contribution, two novel tetra-/triphenylethene-dithienylethene-BF₂bdk triads (TDB1 and TDB2) were designed and prepared by appending tetra-/triphenylethene and BF₂bdk moieties at the termini of dithienylethene unit. Before irradiation with blue light at 460-470 nm, they showed an intense emission in solution and in the PMMA film state, suggesting that the AIE effect of tetra-/triphenylethene was inhibited, and functioned only as electron-donating groups. Moreover, upon alternating irradiation with blue/NIR light, TDB1 and TDB2 displayed effective fluorescent switching behaviors and NIR photochromism in toluene and the PMMA film. Therefore, they would be utilized as novel visible light-triggered switches integrated in smart optoelectronic materials. The DFT calculations further validate the differences for their optical properties in the experiments

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, Synthetic Route of 219537-97-0.

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

Lin, Yen-Jen published the artcileDithienylethene-containing cyclic and linear conjugated molecules: Synthesis, photochromism, and photoluminescence, COA of Formula: C15H14Cl2S2, the publication is Dyes and Pigments (2021), 109700, database is CAplus.

Cyclic and linear conjugated small mols. comprising dithienylethene (DTE) and thiophene groups were synthesized via Suzuki and McMurry couplings. The cyclic mol. was polymerized via ring-opening metathesis polymerization (ROMP) using a second-generation Grubbs catalyst to produce a DTE- and thienylene vinylene-containing conjugated polymer. DTE-containing small mols. exhibited (quasi-) reversible photochromism through alternating UV and visible light irradiation The small linear mols. showed faster photochromism than the cyclic mol. In contrast, the linear dimer and polymer did not undergo photochromism; however, they showed efficient photoluminescence, with quantum yields of 0.26 and 0.18, resp.

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, COA of Formula: C15H14Cl2S2.

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