Chapter 298: Sad sister

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Xu Qiu and Han Jiaying had a wonderful Saturday.
On Sunday, the two switched back to work mode again, eating in the cafeteria at noon while chatting about the experimental plan.
Han Jiaying took the initiative to open the topic: "The PBDB-T series of monomer units, Shenzhen City informed that they are in stock. I bought a total of 500 mg, and it has been shipped now. It should be available this week."
After a pause, the school girl continued: "My second-generation H22 series donor materials, combined with the school sister’s system, have a maximum efficiency of 7.3%, which is generally more efficient than the first-generation H series donor materials. Generally, I want to consider developing third-generation H series molecules."
Xu Qiu let out a "hmm" and replied: "There are already fluorine atoms on the FTAZ unit. There are no other sites that can be introduced. At present, we can only optimize for the BDT unit. Continue to optimize the side chain~EbookFREE.me ~Welfare] Pay attention to the public.. [Book Friends Base Camp], read books every day and draw cash/points!
Xu Qiu took a piece of dry pot chicken nuggets, handed it to his mouth, thought for a moment, and said: "The thiophene unit on the side chain is retained. For heteroatoms, sulfur and oxygen have been tried. You can try the silane side chain. Of course It is also possible to introduce fluorine atoms into the BDT unit."
"Okay~" Han Jiaying nodded and said: "I only thought of introducing fluorine atoms before, because there are corresponding units sold in Shenzhen City, which are slightly more expensive. If the silane side chain is used, we need to synthesize it by ourselves. It's not difficult. These two structures are tentatively scheduled as H3x and H4x systems."
"From a synthetic point of view, it is really not difficult. I should have given you the literature before. It is a low-temperature reaction that requires tin reagent and n-butyl lithium. On both ends of BDT, there is a certain amount of trimethyltin. Dangerous." Xu Qiu continued:
"Similarly, for the PBDB-T system, if you want to develop new materials in the later stage, you also need to synthesize monomer units yourself. This structure can introduce more group sites and can be optimized and more perfect."
"I will pay attention to the safety of the experiment." Han Jiaying patted her chest and promised. After a while, she suddenly said: "By the way, brother, have you heard about it? The AM article by the sister is the opinion of the IDT-ICIN system. I came back, saying that it is recommended to switch from AM to AEM."
"When did it happen?" Xu Qiu asked in amazement. He really didn't know about this. The news in the usual articles was that he was more informed than the school girl. I didn't expect the school girl to tell him the news this time.
"This morning when I asked the senior sister about the performance of the device, she casually raised a mouth with me." Han Jiaying explained.
"It turns out that this is the case. The luck of the senior sister is a bit back." Xu Qiu touched the non-existent beard on his chin, and analyzed: "It is estimated that Teacher Wei has mostly agreed to the editor's transfer request. Generally, this kind of transfer article should be serious Modifications can be received directly without re-review."
In the afternoon, Caiyi 216.
Xu Qiu confirmed his previous thoughts from Chen Wanqing. As expected, Wei Xingsi compromised and did not appeal with the editor, but directly agreed to the transfer request.
The comments came back on Friday. In the evening, the senior sister corrected the comments and text of the article and returned to the editor.
In fact, as a subsidiary of AM, AEM’s status is similar to that of
Nature
and
Nature
. Although the grade is slightly lower, it is not much lower. It is still acceptable for AM to transfer an AEM article. If it is AFM or even AELM, it will be a bit of a loss. Most of the teachers will not follow it.
It's just that the senior sister has been thinking about AM, now it's okay again.
The key point is that Chen Wanqing is now in the second year of her Ph.D. In the new semester, she will officially enter the third year of her Ph.D. She needs to sort out her graduation thesis and find a job at the same time. The time for experimenting is definitely not as long as it is now. Time is running out.
Now in the field of organic photovoltaics, because the beautiful country has reduced the relevant scientific research funding, it is somewhat difficult to find post-doctoral candidates abroad.
Chen Wanqing is still entangled, whether to change the direction to find a post-doctorate, or to develop in the industry, or to change careers to find opportunities to go to Warwick and other big factories. Working hard is still very promising, of course, working overtime is definitely inevitable.
However, the work intensity of Wei's research group should theoretically exceed Warwick...
In the academic circle, the research group with a more "PUSH" atmosphere, 996+ has long been commonplace, and it is still legal 996+.
Reporter: "How can you let your students 996?"
Instructor: "Oh, they are all voluntary."
Reporter: "Voluntary also does not work, according to the "Labor Law" Barabara..."
Instructor: "Oh, you said "Labor Law". They are students. They are studying, not working. If you don’t believe me, look at the current high school students. Early self-study starts at 6:30 in the morning, and evening self-study ends at 10 in the evening. Make up classes on Sundays, which are more serious than 996. Isn't it normal?"
Reporter: "It seems to make sense, but there is something wrong..."
Instructor: "It must make sense, how can a student's 996 be called 996?"
Two days have passed, and Chen Wanqing has accepted the fact that the article has been transferred to AEM. In any case, AEM is also a good district one journal, and she can finally wash away the nickname of the "second district killer" in the past.
As a result, the elder sister regained her fighting spirit and discussed the next experiment plan with Xu Qiu.
Xu Qiu first made a comment: "The name IDT-T (EH)-ICIN is too long, why not think of a short name?"
Chen Wanqing smiled and said: "I noticed this when I was writing the article. Its abbreviation has already been figured out. It is called IEIC. IDT is abbreviated as'I' and T(EH) is abbreviated as'E'. ICIN is referred to as'IC', what do you think of Xu Qiu?"
"I have no opinion." Xu Qiu nodded and said, "Senior sister, you can decide by yourself. Anyway, we are currently the only team in this subdivision of ICIN, and we are not afraid of duplicating other people's names."
Chen Wanqing opened a PPT file on the desktop and said: "Help me see the three molecules I designed."
Her three molecules were named IEICF, and IEICS.
Xu Qiu looked at the reaction steps and commented: "The first IEICF was to introduce fluorine atoms into the thiophene unit. This is relatively simple. You can directly buy the corresponding unit and synthesize it. However, in this case, the fluorine atom is occupied. The position of the original alkyl side chain is difficult to introduce the side chain, and the solubility may be poor... I am not very optimistic about this molecule."
"Yeah," Chen Wanqing nodded, changed the PPT, and said: "Then I will build this system at the end. Look at the other two structures."
Xu Qiu continued to check that it was similar in structure to IEICS, in which oxygen and sulfur heteroatoms were introduced into thiophene. The synthetic route was slightly more complicated and required five steps.
In the first step, thiophene substituted by methoxy/methylthio group is introduced into the side chain of 2-ethylhexyl (EH) under the conditions of isooctyl alcohol and p-toluenesulfonic acid to replace the position of the methyl group to form T(OEH ) And T (SEH) units.
The second step is to react with the brominated reagent, N-bromosuccinimide (NBS) and the product of the first step to obtain monobromo-substituted products, T(OEH)-Br and T(SEH)-Br.
In the third step, it reacts with n-butyllithium and DMF in two steps to place an aldehyde group on the other side of the thiophene to obtain Br-T(OEH)-CHO and Br-T(SEH)-CHO.
In the fourth step, a Stille reaction occurs with the IDT substituted with bistrimethyltin to generate two OHC-T-IDT-T-CHO structures with different side chains.
The fifth step is to react with ICIN to produce the final product and IEICS.
"There is nothing wrong with the overall route. Only the first and second steps are new reactions, which is not difficult." Xu Qiu commented, it seems that the senior sister has also grown a lot.
"That's good. When the data of the IEIC system at hand is complete, I will do the synthesis." After listening to Xu Qiu's words, Chen Wanqing felt very stable and asked casually: "By the way, Xu Qiu, your synthesis last week was fairly smooth. ?"
"Although the product has not been characterized by nuclear magnetic, elemental analysis, etc.~EbookFREE.me~, judging from the properties of the product, it should be successful." Xu Qiu paused and said:
"Now you have three ICIN derivatives, namely dichloro, difluoro and dimethyl substituted, and the yield is above 5 grams. You can also use these ICIN derivatives after your IEIC system, IDTT, FND The unit has also been synthesized, and the next step is the aldehyde grouping reaction and the final D/A combination reaction."
"The progress is pretty fast." Chen Wanqing smiled.
After chatting with the elder sister again, Xu Qiu sat in his seat and began to think about today's experimental arrangements.
If I go to Zhangjiang, the experiment time is too short. I have to come back on Monday for a group meeting...
The new materials have not been synthesized yet, and Handan seems to have no experiments to do...
There is no article to write...
It seems to be a good day to fish!
Xu Qiu was thinking, and suddenly saw Teacher Wei appear at the door of 216, staring at him with scorching eyes.