3157-91-3Relevant academic research and scientific papers
Light-responsive nanocomposites combining graphene oxide with POSS based on host-guest chemistry
Teng, Zhiwei,Wang, Bingtao,Hu, Yingying,Xu, Danqian
, p. 717 - 720 (2019)
Based on the reversible host-guest inclusion/exclusion of cyclodextrin-functionalized graphene oxide (GO-CD) and azobenzene-terminated polyhedral oligomeric silsesquioxane (Azo-POSS), a novel kind of light-responsive nanocomposites GO-POSS was developed u
Multistimuli responsive polymer nanoparticles on the basis of the amphiphilic azobenzene-contained hyperbranched poly(ether amine) (hPEA-AZO)
Yu, Bing,Jiang, Xuesong,Wang, Rui,Yin, Jie
, p. 10457 - 10465 (2010)
We here reported the multistimuli responsive behavior of polymer nanoparticles, which was formed through direct dispersion of the amphiphilic azobenzene-contained hyperbranched poly(ether amine) (hPEA-AZO) in water. A series of hPEA-AZO were synthesized b
Azobenzene derivative, azobenzene derivative-containing laser anti-counterfeiting device and preparation methods of azobenzene derivative and laser anti-counterfeiting device
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Paragraph 0115; 0184; 0186; 0190; 0192; 0196; 0198, (2020/07/06)
The invention discloses an azobenzene derivative, an azobenzene derivative-containing laser anti-counterfeiting device and preparation methods of the azobenzene derivative and the laser anti-counterfeiting device. The azobenzene derivative has a structure represented by the following formula, wherein R1 and R5 are independently selected from any one of three groups defined in the specification; R2, R3, R4 and R7 are independently selected from any one of H, F, Cl, Br and CH3; and n is selected from 1-10. The anti-counterfeiting device is obtained by forming a film through thermocuring and/or ultraviolet curing, forming a sandwich structure coating layer on the surface of a substrate and then photoetching anti-counterfeiting patterns on the coating layer through a photomask. The preparationmethod of the azobenzene derivative-containing laser anti-counterfeiting device provided by the invention has the advantages of low cost, simplicity and convenience in operation, heat-resistant stability, easiness in large-scale production and the like; the laser anti-counterfeiting device prepared by the method is good in stability and high in anti-counterfeiting recognition degree, has important significance in promoting preparation of the anti-counterfeiting device, and has quite important application value in national economy and daily life of people.
Synthesis and characterization of photochromic azobenzene cellulose ethers
Li, Zhijun,Zhang, Dong,Weng, Jiabao,Chen, Biao,Liu, Haiqing
, p. 748 - 754 (2013/10/08)
Photochromic azobenzene cellulose ethers were prepared by homogeneous etherification of cellulose with 2,3-epoxypropoxy-azobenzene (EA) in N,N-dimethylacetamide/lithium chloride solution. The EA with epoxy group could highly efficiently react with cellulose to synthesize 3-azobenzyloxy-2- hydroxypropyl-cellulose (Azo-cellulose) ethers with controllable degree of substitution (DSazo). The DSazo was in a range of 0.2-2.0 adjusted by the molar ratio of EA to anhydroglucose unit of cellulose. The Azo-celluloses with DSazo ≥ 0.53 were soluble in aprotic solvents like dimethylsulfoxide. Their chemical structures and properties were characterized by elemental analysis, FT-IR, NMR, and thermogravimetric analysis. They showed reversible trans-cis-trans transition when Azo-cellulose/DMAc solutions were irradiated by successive irradiation of UV and visible light. The transition between trans- and cis- isomers could be effectively controlled by simply adjusting the irradiation time. The photo-stimulated trans-cis-trans conformational change induced conformation transition between rod-like shape of trans-isomer and skewed shape of cis-isomer.
