Category: 135529-02-1

Itoh, Tomomichi published the artcileNonspherical Uniaxial Azobenzene Polymer Particles and Their Shape Changes under UV- or White-Light Irradiation for Stimuli-Response Applications, Application In Synthesis of 135529-02-1, the publication is ACS Applied Polymer Materials (2020), 2(6), 2485-2494, database is CAplus.

In this study, we developed azobenzene polymer particles showing several light-induced shape changes. Conventional azobenzene particles require exposure to polarized white or blue light on a substrate for shape elongation. First, the dispersion polymerization of 6-[4-(4′-methoxyphenylazo)phenoxy]hexyl methacrylate afforded unique oval or short cylindrical shapes with controlled sizes and narrow size distributions. Then, polarized optical microscopic observations and wide-angle X-ray diffraction measurements suggest that the azobenzene moiety formed a uniaxially orientated smectic-layered structure in the particles. Differential scanning calorimetric measurements indicated that the packing structures and particle shapes were closely related to each other. Finally, the particle shape was altered by the trans-cis photoisomerization of azobenzene accompanied by the deformation of the azobenzene packing structure. Interestingly, their shape anisotropy was increased by UV and white-light irradiation The particle shape was changed in a dispersed medium and on a substrate by unpolarized light. Consequently, the combination of a light source and site varied the light-induced shape changes of the azobenzene particles.

ACS Applied Polymer Materials 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, Application In Synthesis of 135529-02-1.

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

Wu, Jianxiang published the artcileNovel amphiphilic ABC 3-miktoarm star azo-copolymer with polypeptide chain: Synthesis, self-assembly and photo-responsive behavior, Quality Control of 135529-02-1, the publication is European Polymer Journal (2020), 109930, database is CAplus.

Well-defined amphiphilic ABC 3-miktoarm star terpolymer containing hydrophilic methoxy poly(ethylene glycol) (MPEG), hydrophobic poly[6-(4-methoxy-azobenzene-4′-oxy) hexyl methacrylate] (PAzoMA) and poly(γ-benzyl-L-glutamic acid) (PBLG) was synthesized by a combination of copper-mediated atom transfer radical polymerization (ATRP) and ring opening polymerization (ROP). MPEG was modified to bear two different functional groups, which were further modified to the initiator of ATRP and ROP for the preparation of the amphiphilic ABC-type 3-miktoarm star terpolymers (MPEG) (PAzoMA) (PBLG). The spindle-like micelles were formed from the amphiphilic 3-miktoarm star terpolymer through a solution self-assembly due to the rigid α-helical conformation of PBLG block and the π-π interaction between PBLG block with PAzoMA block in the star terpolymer. The investigation of the photo-isomerization behavior of (MPEG) (PAzoMA) (PBLG) in solution and in micellar solution showed that trans-cis isomerization in solution was quicker than that in micellar solution, and H- or J-aggregates of the azobenzene groups in the aggregates did not be observed On the basis of the exptl. results, the formation mechanisms of the spindle-like micelles were suggested and the obtained results may expand the self-assembly research field.

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 C27H39ClN2, Quality Control of 135529-02-1.

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

Tong, Zaizai published the artcileUnexpected crystalline memory effect in poly(L-lactide)-based block copolymers, Formula: C23H28N2O4, the publication is CrystEngComm (2020), 22(5), 979-985, database is CAplus.

The crystalline memory effect is frequently observed in polymer crystallization, but the melt structure remains unresolved. In this work, the preserved spherulites in the melt of poly(L-lactide)-based block copolymers are observed by polarized optical microscopy (POM) unexpectedly. These spherulites are not erased instantly on reaching the melting temperatures, but it takes tens of minutes at a designed melting temperature to completely erase the spherulites. These preserved spherulites in the melt, where some crystalline traces are lost but the Maltese cross appearance is still obvious, are possibly attributed to the long range of mol. orientation enhanced by microphase separation between two blocks. Moreover, these preserved spherulites have a significant effect on the subsequent crystallization, i.e. a faster radius growth rate and denser nucleation. This study highlights that a thermodynamically unstable structure can be fully preserved in a supercooled melt for a long time, which has never been reported elsewhere.

CrystEngComm 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 C11H24O3, Formula: C23H28N2O4.

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

Sugiyama, Kazuo published the artcileSynthesis and properties of macromonomer having azobenzene moieties as a mesogenic group, Product Details of C23H28N2O4, the publication is Kinki Daigaku Kogakubu Kenkyu Hokoku (1988), 31-5, database is CAplus.

4-Methoxy-4′-(6-methacryloyloxyhexyloxy)azobenzene was telomerized radically in the presence of HSCH₂CO₂H to give a telomer which was treated with glycidyl methacrylate to give the title macromonomer. DSC and polarization microscopy showed that the telomer was a nematic liquid crystal. Photoreversible cis-trans isomerization of the telomer was studied.

Kinki Daigaku Kogakubu Kenkyu Hokoku 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 C9H9NO, Product Details of C23H28N2O4.

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

Sugiyama, Kazuo published the artcileThermal properties of liquid-crystalline polyitaconates with paired mesogens, COA of Formula: C23H28N2O4, the publication is Bulletin of the Chemical Society of Japan (1991), 64(5), 1715-17, database is CAplus.

2-Methylenesuccinates (itaconates) (I) having 2 4-methoxyazobenzene moieties as paired mesogenic groups were prepared I was radically homopolymerized and copolymerized with non-mesogenic monomer, dioctadecyl itaconate (DOI). Paired mesogenic homopolyitaconate exhibits a nematic phase and the copolymers of I with DOI also show a mesomorphic phase up to 25 mol% of DOI content. The enhancement of mesophase formation by paired mesogens is discussed.

Bulletin of the Chemical Society of Japan 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 C10H15ClO3S, COA of Formula: C23H28N2O4.

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

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

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

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