Rajesh, Sarigama; Zhai, Jiali; Drummond, Calum J.; Tran, Nhiem published an article in 2021. The article was titled 《Synthetic ionizable aminolipids induce a pH dependent inverse hexagonal to bicontinuous cubic lyotropic liquid crystalline phase transition in monoolein nanoparticles》, and you may find the article in Journal of Colloid and Interface Science.Recommanded Product: 2-(2-Hydroxyethyl)pyridine The information in the text is summarized as follows:
A prospective class of materials for drug delivery is lyotropic liquid crystalline (LLC) nanoparticles, such as cubosomes and hexosomes. Efforts are being made to generate a pH dependent system, which exhibits slow release hexosomes (H2) at physiol. pH and relatively fast release cubosomes (Q2) at acidic disease sites such as in various cancers and bacterial infection (pH ∼ 5.5-6.5). Herein, we report the synthesis of nine ionizable aminolipids, which were doped into monoolein (MO) lipid nanoparticles. Using high throughput formulation and synchrotron small angle X-ray scattering (SAXS), the effects of aminolipid structure and concentration on the mesophase of MO nanoparticles at various pHs were determined As the pH changed from neutral to acidic, mesophases, could be formed in an order L2 (inverse micelles) → H2 → Q2. Specifically, systems with heterocyclic oleates exhibited the H2 to Q2 transition at pH 5.5-6.5. Furthermore, the phase transition pH could be fine-tuned by incorporating two aminolipids into the nanoparticles. Nanoparticles with a pH dependent phase transition as described in this study may be useful as drug delivery carriers for the treatment of cancers and certain bacterial infection. In the experiment, the researchers used many compounds, for example, 2-(2-Hydroxyethyl)pyridine(cas: 103-74-2Recommanded Product: 2-(2-Hydroxyethyl)pyridine)
2-(2-Hydroxyethyl)pyridine(cas: 103-74-2) belongs to pyridine. Pyridine is a relatively complex molecule and exhibits a number of different bands in IR spectra. Among others, the bands characterizing the ν8a and ν19b modes have been found to be sensitive to the coordination or protonation of the molecule. Note that the band that is diagnostic for the PyH+ ion at about 1545 cm− 1 (ν19b mode) does not overlap with any of the other bands.Recommanded Product: 2-(2-Hydroxyethyl)pyridine