Effects of accelerator alkyl chain length on the microvia filling performance in copper superconformal electroplating was written by Luo, Jiye;Li, Zhen;Shi, Minghao;Chen, Jiajia;Hao, Zhifeng;He, Jun. And the article was included in Journal of the Electrochemical Society in 2019.Synthetic Route of C6H12BrCl The following contents are mentioned in the article:
In addition to the commercialized accelerator bis-(sodium sulfopropyl)-disulfide (SPS), the authors designed and synthesized two other disulfide compounds, namely, bis-(sodium sulfohexyl)-disulfide (SHS) and bis-(sodium sulfoethyl)-disulfide (SES), to study the effect of their alkyl chain lengths on the microvia filling performance. The galvanostatic measurements show that the addition of Cl– to different accelerator-containing solutions leads to the same synergistic effects at a c.d. of 20 mA/cm2, indicating that the interactions between accelerators and Cl– are independent of their alkyl chain lengths. However, when both Cl– and a suppressor are present, the alkyl chain length in accelerators strongly impacts their anti-suppressor strength, which increases with the growth of the alkyl chain length, reaches a maximum (SPS) and then decreases. A possible adsorption and interaction model is proposed to explain the difference of anti-suppressor effects, and microvia filling plating experiments were carried out to evaluate the effects on the filling performance. Both SES and SPS, which have appropriate mol. lengths and relatively strong antagonistic effects against polyethylene glycol (PEG) and Cl– ensemble, achieved complete microvia filling. For SHS, due to the overlong alkyl chain and weak antagonistic effect against PEG and Cl–, no microvia was completely filled. This study involved multiple reactions and reactants, such as 1-Bromo-6-chlorohexane (cas: 6294-17-3Synthetic Route of C6H12BrCl).
1-Bromo-6-chlorohexane (cas: 6294-17-3) belongs to organic chlorides. Organic chlorides can cause corrosion in pipelines, valves and condensers, and cause catalyst poisoning. The hydrocarbon processing industry (HPI) and others are affected by damage caused by these substances. Alkyl chlorides readily react with amines to give substituted amines. Alkyl chlorides are substituted by softer halides such as the iodide in the Finkelstein reaction.Synthetic Route of C6H12BrCl
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics