Tag: M.W=350-400

Sadagopan, K. published the artcileSynthesis and characterization of azo-based methacrylate polymers with methoxy and nitro end groups for nonlinear optical applications, Synthetic Route of 135529-02-1, the publication is Journal of Applied Polymer Science (2007), 104(6), 3497-3504, database is CAplus.

One new and three already described azo-based methacrylate monomers with methoxy and nitro end groups and spacer length 2 and 6 were synthesized. These monomers were copolymerized with Me methacrylate and the monomers and copolymers were characterized by classical spectroscopy techniques (FTIR, NMR, and UV-VIS), gel permeation chromatog. (GPC), elemental anal. and thermal anal. (TGA and DSC). The glass transition temperature of the polymers was above room temperature and thermal decomposition temperatures above 100°. All the polymers were amorphous in nature and formed excellent homogeneous films with good optical transparency. The polymer films coated on indium tin oxide glass slides were poled and their order parameters were calculated to check the stability of oriented dipoles. Few samples were also studied for their second harmonic generation properties. Temporal stability, checked up to 120 h at room temperature, was quite satisfactory.

Journal of Applied Polymer Science published new progress about 135529-02-1. 135529-02-1 belongs to esters-buliding-blocks, auxiliary class azo,Alkenyl,Benzene,Ester,Ether, name is 6-(4-((4-Methoxyphenyl)diazenyl)phenoxy)hexyl methacrylate, and the molecular formula is C23H28N2O4, Synthetic Route of 135529-02-1.

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

Menon, Sajith published the artcilePhotoresponsive Glycopolymer Aggregates as Controlled Release Systems, SDS of cas: 135529-02-1, the publication is Macromolecular Chemistry and Physics (2014), 215(23), 2365-2373, database is CAplus.

The use of a new block copolymer made up of poly(azobenzene methacrylate) (PMAzo) and poly(3-O-4-vinylbenzoyl-D-glucopyranose) (PBG) is described for the solubilization of water-insoluble dyes such as Nile Red in aqueous solutions This polymer, which is abbreviated as PMAzo-b-PBG, self-assembles into spherical aggregates in water as confirmed by at. force microscopy. UV irradiation of the aqueous polymer solution destabilizes the aggregates brought about as a result of the trans-cis isomerization of the MAzo units. Dissociated aggregates reunite to form tubular aggregates when the solution is irradiated with 450 nm light. Nile Red, which is a hydrophobic dye, can be incorporated into these aggregates and subsequently released using UV light. The encapsulation, release, and re-encapsulation of Nile Red are studied using fluorescence spectroscopy.

Macromolecular Chemistry and Physics published new progress about 135529-02-1. 135529-02-1 belongs to esters-buliding-blocks, auxiliary class azo,Alkenyl,Benzene,Ester,Ether, name is 6-(4-((4-Methoxyphenyl)diazenyl)phenoxy)hexyl methacrylate, and the molecular formula is C23H28N2O4, SDS of cas: 135529-02-1.

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

Alam, Zahangir Md. published the artcileSynthesis of azobenzene-functionalized two-arm, three-arm and four-arm telomers using polyfunctional chain transfer agents, Formula: C23H28N2O4, the publication is Polymer International (2009), 58(11), 1308-1313, database is CAplus.

BACKGROUND: Star-shaped polymers are very attractive because of their interesting properties such as reduced viscosity, good solubility, low glass transition temperature and fast response to external stimuli. The incorporation of azobenzene moieties in star-shaped polymers could significantly widen their potential applications in various optical devices. One of the most important properties of the azobenzene chromophore is its reversible trans-cis photoisomerization induced by UV or visible light. Photoisomerization induces conformational changes in azopolymer chains, which in turn lead to macroscopic variations in chem. and phys. properties of the surroundings and media. RESULTS: This study reports the synthesis of azobenzene-functionalized two-, three- and four-arm telomers via free radical telomerization using the di-, tri- and tetrafunctional chain transfer agents 1,2- and 1,4-benzenedimethanethiol, trimethylolpropane-tris(2-mercaptoacetate) and pentaerythritol-tetrakis(3-mercaptopropionate), resp., in the presence of azobisisobutyronitrile. Azotelomers were characterized using gel permeation chromatog. and ¹H NMR and Fourier transform IR spectroscopy. Thermal phase transition behaviors were investigated using differential scanning calorimetry and polarized optical microscopy. Azotelomers synthesized in this study showed reversible photoisomerization and a fast generation of birefringence. CONCLUSION: Considering the photoisomerization behavior and birefringence of the two-, three- and four-arm azotelomers, it can be concluded that they could be potential candidates for use in various optical devices. Copyright © 2009 Society of Chem. Industry.

Polymer International published new progress about 135529-02-1. 135529-02-1 belongs to esters-buliding-blocks, auxiliary class azo,Alkenyl,Benzene,Ester,Ether, name is 6-(4-((4-Methoxyphenyl)diazenyl)phenoxy)hexyl methacrylate, and the molecular formula is C23H28N2O4, Formula: C23H28N2O4.

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

Kurihara, Seiji published the artcilePhotoswitching properties of photonic band gap material containing azo-polymer liquid crystal, Product Details of C23H28N2O4, the publication is European Polymer Journal (2007), 43(12), 4951-4960, database is CAplus.

A photochem. tunable photonic crystal was prepared by infiltration of the polymer liquid crystal (LC) having azo-chromophores in a SiO₂ inverse opal structure. The SiO₂ inverse opal film infiltrated with the polymer LC reflected a light corresponding to the periodicity as well as the refractive indexes of the inverse opal structure. Linearly polarized light irradiation caused the shift of the reflection band to longer wavelength >15 nm. This is caused by the formation of uniaxially anisotropic mol. orientation of the polymer LC. The switched state was stable under interior light, and reversible switching of the reflection band can be achieved by the linearly and circularly polarized light irradiation This photoswitching property will be suitable not only for various optical materials, but also for introduction of defects in the photonic crystals.

European Polymer Journal published new progress about 135529-02-1. 135529-02-1 belongs to esters-buliding-blocks, auxiliary class azo,Alkenyl,Benzene,Ester,Ether, name is 6-(4-((4-Methoxyphenyl)diazenyl)phenoxy)hexyl methacrylate, and the molecular formula is C23H28N2O4, Product Details of C23H28N2O4.

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

Shirota, Tomomi published the artcilePhotoswitching Behavior of SiO2 Inverse Opal Films Infiltrated with Azo-Tolane Copolymer: Effect of Polymer Main Chain Structure, HPLC of Formula: 135529-02-1, the publication is Molecular Crystals and Liquid Crystals (2009), 79-88, database is CAplus.

Phototunable photonic band gap materials were prepared by infiltration of a liquid crystalline azopolymer into voids of a SiO2 inverse opal film. Linearly polarized light irradiation resulted in a reversible and stable shift of the reflection band to longer wavelength region due to the transformation of azobenzene groups from random to anisotropic mol. orientation. Acrylate and methacrylate copolymers having both azobenzene and tolane groups in side chain have been synthesized in order to improve switching property. Upon irradiation of linearly polarized light SiO2 inverse opal film infiltrated with methacrylate copolymer showed a larger wavelength shift of the reflection band compared to that of the composite film infiltrated with acrylate copolymer.

Molecular Crystals and Liquid Crystals published new progress about 135529-02-1. 135529-02-1 belongs to esters-buliding-blocks, auxiliary class azo,Alkenyl,Benzene,Ester,Ether, name is 6-(4-((4-Methoxyphenyl)diazenyl)phenoxy)hexyl methacrylate, and the molecular formula is C7H8BClO2, HPLC of Formula: 135529-02-1.

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

Huang, Pin-Chi published the artcileMorphology-Mediated Photoresponsive and Fluorescence Behaviors of Azobenzene-Containing Block Copolymers, Related Products of esters-buliding-blocks, the publication is Langmuir (2018), 34(25), 7416-7427, database is CAplus and MEDLINE.

We investigated the relationship between the self-assembled morphol. of poly(tert-Bu acrylate)-block-poly(6-[4-(4′-methoxyphenylazo)phenoxy]hexyl methacrylate) (PtBA-b-PAzoMA) block copolymers and their photoresponsive and fluorescence behaviors. The morphol. of PtBA-b-PAzoMA copolymers was manipulated by dissolving them in mixed DMF (DMF)/hexanol solvents. When PtBA-b-PAzoMA was dissolved in DMF-rich (neutral) solvents, a favorable interaction between the DMF mols. and both blocks resulted in a random-coiled conformation. The unconfined morphol. facilitated the formation of both nonassocd. and head-to-head organized azobenzene mesogens, which promoted fluorescence emission. When hexanol, a PtBA-selective solvent, was added to DMF, the solvency of PtBA-b-PAzoMA worsened, leading to its assembly into micelles, with PAzoMA in the micelle core. The confinement of azobenzene moieties in the micelle core hindered their trans-to-cis photoisomerization, thereby considerably decreasing the kinetics of photoisomerization and the population of cis isomers. Addnl., a nanoconfined geometry resulted in compactly packed chromophores, causing fluorescence loss. When PtBA-b-PAzoMA was exposed to UV light, the increased number of cis isomers hampered the closely packed mesogens, resulting in a substantial enhancement of fluorescence emission. When the mole fraction of the PAzoMA block was increased, PtBA-b-PAzoMA formed clusters, causing the slow kinetics of photoisomerization and fluorescence quenching.

Langmuir published new progress about 135529-02-1. 135529-02-1 belongs to esters-buliding-blocks, auxiliary class azo,Alkenyl,Benzene,Ester,Ether, name is 6-(4-((4-Methoxyphenyl)diazenyl)phenoxy)hexyl methacrylate, and the molecular formula is C23H28N2O4, Related Products of esters-buliding-blocks.

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

Pathiranage, Taniya M. S. K. published the artcileSynthesis and characterization of side-chain thermotropic liquid crystalline copolymers containing regioregular poly(3-hexylthiophene), Recommanded Product: 6-(4-((4-Methoxyphenyl)diazenyl)phenoxy)hexyl methacrylate, the publication is Polymer (2015), 317-326, database is CAplus.

An azobenzene liquid crystalline mesogen, 6-(4-((4-methoxyphenyl)diazenyl)phenoxy)hexyl methacrylate (MMAZO) was incorporated into a block copolymer with regioregular poly(3-hexylthiophene) (P3HT). The synthesis was performed by a combination of Grignard metathesis (GRIM) and atom transfer radical polymerization (ATRP) techniques. The composition of synthesized copolymers was determined from ¹HNMR anal. The P3HT block/random copolymers containing thermotropic liquid crystalline segments were expected to bring unique self-assembly and opto-electronic properties. The field-effect mobility of the P3HT copolymers was measured in organic thin film transistors (OTFT). The surface morphol. of the P3HT copolymer films upon annealing was investigated by tapping mode at. force microscopy (TMAFM). Finally, the transition of liquid crystalline mesophase in response to the temperature in the P3HT copolymers was investigated by differential scanning calorimetry (DSC) and polarizing optical microscopy (POM).

Polymer published new progress about 135529-02-1. 135529-02-1 belongs to esters-buliding-blocks, auxiliary class azo,Alkenyl,Benzene,Ester,Ether, name is 6-(4-((4-Methoxyphenyl)diazenyl)phenoxy)hexyl methacrylate, and the molecular formula is C23H28N2O4, Recommanded Product: 6-(4-((4-Methoxyphenyl)diazenyl)phenoxy)hexyl methacrylate.

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

Wu, Yu-Shen published the artcileManipulating the structures and photoresponsive properties of an azobenzene-containing triblock copolymer by changing solvency and adding salts, Computed Properties of 135529-02-1, the publication is Journal of Molecular Liquids (2022), 118013, database is CAplus.

We examined the structure-property relationship of a triblock copolymer comprising azobenzene sequences, namely, poly(6-[4-(4′-ethoxyphenylazo)phenoxy]hexyl methacrylate)-block-poly(ethylene glycol)-block-poly(6-[4-(4′-ethoxyphenylazo)phenoxy]hexyl methacrylate) (PMMAzo-b-PEG-b-PMMAzo), in mixed DMF (DMF)/H2O solvents, with the effects of solvency and salts being the main focus. When H2O (a PEG-selective solvent) was added to DMF (a neutral solvent), the poor compatibility between H2O and PMMAzo mols. led to the formation of micelles comprising PMMAzo and PEG in the core and corona, resp. Increases in the H2O content in the mixed solvent decreased the solvency, which caused increases in the micelle association number and hydrophobic core radius. The azobenzene moieties confined in the micellar core inhibited their photoisomerization, which caused decreases in the photoisomerization kinetics and cis isomer content. The addition of KCl to the PMMAzo-b-PEG-b-PMMAzo solution increased the hydrophobicity of PEG chains and the core radius and decreased the corona thickness. Moreover, the KSCN addition to the aforementioned solution increased the hydrophilicity of PMMAzo segments, which caused the core radius and corona thickness of micelles. Salt addition disturbed the compact packing of mesogens and reduced the mesogen association Consequently, with an increase in the salt concentration, the content of H-type mesogen aggregates increased, whereas that of nonassocd. mesogens decreased.

Journal of Molecular Liquids published new progress about 135529-02-1. 135529-02-1 belongs to esters-buliding-blocks, auxiliary class azo,Alkenyl,Benzene,Ester,Ether, name is 6-(4-((4-Methoxyphenyl)diazenyl)phenoxy)hexyl methacrylate, and the molecular formula is C12H17BO5, Computed Properties of 135529-02-1.

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

Li, Najun published the artcileSynthesis and third-order NLO properties of polymethacrylates containing pendent azobenzene groups, Product Details of C23H28N2O4, the publication is High Performance Polymers (2007), 19(3), 356-367, database is CAplus.

Six azobenzene monomers containing methacrylate groups were prepared and characterized. The monomers varied by having alkyl spacers of varying lengths and either nitro or methoxy substituents in conjugation with the azo groups. The monomers were polymerized via atom transfer radical polymerization (ATRP) to give polymethyacrylates with pendent azobenzene groups. The pendent azobenzene groups were separated from the polymer backbone by alkyl spacing groups of varying lengths. The side-chain nonlinear optical (NLO) polymers with variable and controllable mol. weight and low polydispersity (1.2-1.4) were obtained. The kinetics of ATRP for each azo monomer was also studied. The third-order NLO property of azo monomers and their polymers were measured using the degenerated four wave mixing technique. Each of the polymers exhibited relatively high χ⁽³⁾ value and rapid response times. The effects of the substituent and spacer length on the ATRP of the methacrylate monomers and the effect of mol. weight on the third-order NLO property of polymers were investigated.

High Performance Polymers published new progress about 135529-02-1. 135529-02-1 belongs to esters-buliding-blocks, auxiliary class azo,Alkenyl,Benzene,Ester,Ether, name is 6-(4-((4-Methoxyphenyl)diazenyl)phenoxy)hexyl methacrylate, and the molecular formula is C23H28N2O4, Product Details of C23H28N2O4.

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

Lee, Ting-Lei published the artcilePhotoresponsive and fluorescence behaviors of azobenzene-containing amphiphilic block copolymers, Product Details of C23H28N2O4, the publication is Journal of Polymer Science, Part B: Polymer Physics (2017), 55(10), 793-803, database is CAplus.

The effects of solvency and mole fraction of azobenzene moieties (f_PAzoMA) on the photoresponsive and fluorescence behaviors of poly(acrylic acid)-block-poly(6-[4-(4′-methoxyphenylazo)phenoxy]hexyl methacrylate) (PAA-PAzoMA) amphiphilic diblock copolymers were investigated using UV-vis spectroscopy and fluorescence spectroscopy. The photoresponsive behavior depended strongly on the solvency and f_PAzoMA. When dissolved in a PAA-selective solvent, PAA-PAzoMA formed micelles with PAzoMA in the micelle core. The confinement of azobenzene moieties caused a steric hindrance, thereby markedly reducing the kinetics of photoisomerization compared with that of the unconfined PAA-PAzoMA in a nonselective solvent. Addnl., PAA-PAzoMA dissolved in the PAA-selective solvent caused a blue shift of the maximum absorbance, suggesting the formation of H-aggregates of azobenzene mesogens. The high H-aggregate content substantially reduced the fluorescence emission. Consequently, the fluorescence emission of PAA-PAzoMA in the nonselective solvent was more intense than that in the PAA-selective solvent. Upon UV irradiation, the enhanced bent-shaped cis isomers disturbed the compact packing of azobenzene mesogens, which substantially enhanced the fluorescence emission. Both the photoisomerization rate and fluorescence emission decreased with an increase in f_PAzoMA. © 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2017.

Journal of Polymer Science, Part B: Polymer Physics published new progress about 135529-02-1. 135529-02-1 belongs to esters-buliding-blocks, auxiliary class azo,Alkenyl,Benzene,Ester,Ether, name is 6-(4-((4-Methoxyphenyl)diazenyl)phenoxy)hexyl methacrylate, and the molecular formula is C23H28N2O4, Product Details of C23H28N2O4.

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