Good's buffers HEPES CAS NO.7365-45-9

1. Factory production, more favorable prices, and regular products are available in stock;

2. Desheng company is an enterprise producing biological buffer products, providing you with more comprehensive services with a variety of products;

3. Desheng has been in this industry for 14 years. Our product knowledge and production experience are very rich

4. Desheng has been engaged in foreign trade since 2010. We have our own right to export.

Compared with their corresponding neutral curvature and structures, metal nanostructures, such as gold nanostar, nano triangle, nano double cone and nanotube, show a large electric field at the position of positive and negative curvature, which is conducive to application in the field of induction and imaging. The common method for the synthesis of gold nanostar is the nuclear and surfactant free strategy of good's buffer HEPES These reagents can be used as metal reducing agents, shape directing agents and stabilizers. Nano stars with different sizes and structures can be obtained by adjusting buffer concentration and solution pH.

Although HEPES is conducive to the formation and structural stability of gold nanosars, little is known about the interaction between HEPES and metals. According to the data records, relevant researchers studied the reconstruction of gold nanostar induced by acidification and found that its morphology depended on pH and acid composition, and was also affected by the protonation state of HEPES. They used zeta potential and DFT method to measure the change of molecular proton state. Surface enhanced Raman spectroscopy (SERS) reveals that the change of pH induces the reversible activation of amine and sulfonic acid groups of HEPES, and the redistribution of electrons weakens the affinity between HEPES and metals, which is conducive to adsorption.

The experimental results show that the reconstruction of gold nano stars depends on the protons in the solution, which is consistent with the decomposition behavior of nanospheres with a diameter of about 6 nm under acid induction. In addition, the strength and reconstruction rate of gold nano stars are related to the affinity of anions and gold. Through the study of the correlation between gold nanostar and HEPES, it is found that HEPES is partially replaced by benzene. When the benzene adsorption or the chemical enhancement related to the sulfonic acid group of HEPES is weakened, HEPES will reorient. The researchers speculated that partial desorption of HEPES and changes in electron distribution led to reorientation.

In conclusion, HEPES will affect the stability of gold nanostar and the detection of benzene by SERS. This effect is mainly due to the pH dependent electron distribution change of HEPES, which leads to its affinity with the gold surface.

Desheng main business scope is blood collection additives, buffers, chemiluminescence substrates, pharmaceutical intermediates and enzyme preparations. It is a new technology enterprise integrating R & D, production and sales. It can supply a variety of buffer raw materials such as HEPES, EPPs, mops, Tris and caps. If necessary, you can directly click the official website to consult customer service personnel.