Multiple-type solutions for multipole interface solitons in thermal nonlinear media

We address the existence of multipole interface solitons in one-dimensional thermal nonlinear media with a step in the linear refractive index at the sample center. It is found that there exist two types of solutions for tripole and quadrupole interface solitons. The two types of interface solitons have different profiles, beam widths, mass centers, and stability regions. For a given propagation constant, only one type of interface soliton is proved to be stable, while the other type can also survive over a long distance. In addition, three types of solutions for fifth-order interface solitons are found.Comment: 5 pages, 5 figure

Base acetamide glycerin ether molecule, chemical synthesis method therefor, and applications thereof in field of gene therapy

Disclosed in the present invention are a base acetamide glycerin ether molecule, a chemical synthesis method therefor, and applications thereof in the field of gene delivery. The molecule has an amphiphilic structure represented by formula (I), that is, a base-1-acetic acid is used as a hydrophilic head, and an amide bond is connected to glycerol aliphatic ether serving as a hydrophobic tail, so as to form an amphiphilic molecule. The Base group is common nature purine and a pyrimidine base, and the R group is a saturated or unsaturated aliphatic carbon chain. The compound can be prepared by means of an activated derivative of the base-1-acetic acid and 2, 3-dialkoxyl-1-propylamine, prices of the raw materials are low, and the synthesis method is simple. The compound can be used to prepare liposome and other supramolecular structures, and does not have obvious cytotoxicity. The base of the head of the compound can be combined with nucleic acid, and can carry the nucleic acid to enter a cell membrane. Accordingly, the compound has the potential of becoming a new non-cationic gene vector, and can be widely used in the field of gene therapy