42268-88-2Relevant articles and documents
COMPOUND, POLYMER, PATTERN FORMING MATERIAL, AND MANUFACTURING METHOD OF SEMICONDUCTOR DEVICE
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, (2021/03/13)
A pattern forming material is configured to use for forming an organic film on a film to be processed, patterning the organic film, and then forming a composite film by infiltrating a metallic compound into the patterned organic film. The pattern forming material contains a polymer including a monomer unit represented by a general formula (3) described below, where R21 is H or CH3, each R22 is a hydrocarbon group of C2-14 where α carbon is primary carbon, secondary carbon or tertiary carbon, Q is a single bond or a hydrocarbon group of C1-20 carbon atoms which may include an oxygen atom, a nitrogen atom, or a sulfur atom between carbon-carbon atoms of or at a bond terminal, and a halogen atom may be substituted for the hydrogen atom.
Efficient Gene Delivery Based on Guanidyl-Nucleic Acid Molecular Interactions
Wang, Dongli,Song, Jie,Wang, Jing,Zhang, Zhiyi,Shen, Qing,Wang, Jun,Guo, Haiyan,Wang, Ruifeng,Xie, Cao,Lu, Weiyue,Liu, Min
, (2020/09/21)
Low transfection efficacy of non-viral gene vectors restricts their applications. In this paper, N1,N3-dicarbamimidoyl-5-methylisophthalamide (BGG) is designed as a functional group, in which two guanidyls are located at the meta positions of an aryl ring. BGG is conjugated with PAMAM G5 (G5-BGG) and G5-BGG/DNA complex is dispersed into a polyvinyl alcohol (PVA) hydrogel for local injection. Molecular docking, NMR, IR and Isothermal titration calorimetry (ITC) experiments demonstrate that G5-BGG has multiple molecular interactions with nucleic acids, which yield high binding affinity toward nucleic acids. Interestingly, the in vitro transfection efficiency and serum stability of G5-BGG are significantly improved when the BGG modification ratio is just one. The integrated G5-BGG/DNA complex is released from a PVA hydrogel sustainably, crosses the cell membrane and escapes from endosome/lysosome. After local injection only once, these features of the G5-BGG/DNA-loaded PVA hydrogel are found to improve antitumor efficiency in vivo, and antitumor efficiency is significantly better than PEI 25K. The results confirm that BGG is a potential group for developing non-viral gene vectors with high transfection efficacy.
Microporous Cyclen-Based Octacarboxylate Hydrogen-Bonded Organic Framework Exhibiting Selective Gas Adsorption
Stackhouse, Chavis,Ren, Junyu,Shan, Chuan,Nafady, Ayman,Al-Enizi, Abdullah M.,Ubaidullah, Mohd,Niu, Zheng,Ma, Shengqian
, p. 6377 - 6380 (2019/10/11)
A microporous hydrogen-bonded organic framework (HOF) was successfully prepared by a cyclen-based octacarboxylate ligand H8tacnip-Zn. The obtained three-dimensional structure presents a periodic double-layer unit that stacks to form a one-dimensional channel that buttresses discrete cavities (~5.6 × 5.6 ?2). From the single crystal structure, the macrocycle-bound metal ion was proven to greatly enhance the rigidity of the cyclen-based ligand while adjusting the direction of the carboxyl groups. The indelible porosity of degassed HOF was elucidated by CO2 sorption and selective gas adsorption. This work provides facile access to construct more porous HOFs based on a cyclen unit.