Chapter 227: The price of PY

Seeing Xu Qiu's puzzled expression, Wei Xingsi explained: "I contacted Professor Tang Yunkun of the Department of Physics, and I can use the funds of their group to buy TRPL instruments."
"Ms. Tang is doing theoretical physics research. The main research direction is organic and inorganic semiconductor materials. The cost of his research group is endless and is about to expire. It just happens that TRPL and his research direction are also considered to be compatible. "Give it to us, and then use our own funds to reimburse the money for the microwave reactor," Wei Xingsi smiled and said, "We can't let them buy a microwave reactor for synthesis in theory."
Xu Qiu nodded and murmured to himself, Mr. Wei really went to PY again. I can only say that Luzi is really wild.
Research funding is also time-effective. For example, the general projects of the National Natural Science Foundation of China usually last for four years. After four years, the funds that are not spent will be recovered.
Of course, it is generally unlikely to run out.
Most of the research groups are short of funds, unless it is a big group that keeps on various key projects, or this kind of theoretical research does not need to buy materials, and the funds can only buy computers and other equipment. Expiration of funds.
"Then the microwave reactor should I contact the CEM distributor or..." Xu Qiu probed.
"I'll take care of it, I have their contact information." Wei Xingsi answered.
"Yeah, okay." Xu Qiu responded. This is not very unexpected. For various instruments and equipment related to scientific research and special materials, because sales are limited, the sales of manufacturers will take the initiative to expand their business, using mass mailing and door-to-door Leave contact information for the university research team by visiting and other methods.
He had received such emails before, and it was a newly established optoelectronic materials company promoting their products.
Xu Qiu also curiously asked how the other party found him. After the other party replied, he realized that it was because of the previously published article and their email contact information was in the literature.
However, the price of the monomer sold by the other company is a bit expensive, and the price-performance ratio is not as high as that of the company in Shenzhen. Therefore, Xu Qiu has no intention of cooperating with them, and the contact information is put in the mailbox.
After dealing with the microwave reactor, Xu Qiu was waiting to leave, and Wei Lao raised his hand, "By the way, how about your non-fullerene review?"
"The second part has been written, and now I am writing the third part." Xu Qiu thought to herself that she just asked a few days ago, could it be...
"Very good," Wei Xingsi nodded, "Wait a few days to finish writing, you can discuss with Teacher Tang, let him write something about the charge transport, and then hang up a second newsletter for him."
‘It turns out that this is the case. This may be one of the costs of Teacher Wei’s PY. But Xu Qiu didn't have any opinion on this. Anyway, he is a work, and adding a corresponding author will have little influence on him, so he replied, "No problem."
"There are two recent organic documents on the table, remember to bring them."
"it is good."
After confirming that Teacher Wei had nothing else to do, Xu Qiu returned to 216 with a few documents.
After the group meeting was over, it was not past 11:30. Although it was working hours in principle, everyone in the office was talking and laughing while paddling the fish.
During this time, Mr. Wei is generally not very good at it unless there are important experiments to be completed.
As soon as Xu Qiu showed his face, he attracted everyone's attention. He remembered the bonus of 2500 yuan he had just received, and he waved his hand and invited everyone to drink a cup of milk tea.
She thought about the cover of the article again. She planned to find Tian Qing, but when he passed by Han Jiaying, the school girl suddenly pulled his sleeve and said curiously: "Brother, what are you looking for Teacher Wei?"
"We talked about the microwave reactor, and now we have basically negotiated it." Xu Qiu briefly explained in a low voice, without mentioning PY.
"Oh, that's it." Han Jiaying didn't ask much when he saw this.
Soothing the school girl, Xu Qiu continued to walk to Tian Qing, saw that she was browsing Wiley's official website, and proactively said: "The cover picture matter..."
Tian Qing raised her head and explained: "I just turned over the cover of the previous issue and found a lot of inspiration." Then, she patted her chest and vowed: "The topic of your article is organic photovoltaics, don't worry. Don't worry, just leave it to me, and promise to complete the task."
"Okay, please." Xu Qiu felt relieved when he saw this.
He is relatively confident in Tian Qing's ability, as long as she takes it seriously, it should not be bad.
...
The main work of the organic trio this week is still synthetic materials.
So, after lunch, the three went to Zhangjiang together.
Xu Qiu had a lot of reactions to vote today, there were four in total.
Three of these reactions are based on the synthesis of first-generation 3D-PDI molecules with a benzene ring as the core unit. They are PDI3-B-5, PDI3-B-6, and PDI3-B-8.
The difference between the three molecules is that the side chain at the nitrogen position of the PDI is different.
This reaction has been carried out before. The raw materials are the monobromo-substituted products of simple PDI molecules and 1,3,5-triborate-substituted benzene for Suzuki coupling reaction.
However, the amount of feed was very small at that time, just to explore the conditions.
Now that the conditions are familiar, it is time to start mass promotion.
This time, he plans to cast 500 mg of each ingredient.
If the experiment goes well, several hundred milligrams of product can be obtained, which is enough for him to use for a long time.
In addition to these three reactions, the last reaction is based on the second-generation 3D-PDI molecule, a further optimization of PDI3-BX-5, that is, the introduction of heteroatom selenium.
Last week, because there were redundant reaction sites on the first-generation 3D-PDI molecules, the first step of introducing heteroatom selenium, nitration, failed there.
With the second generation of 3D-PDI molecules, the excess reaction sites have disappeared, and the nitration reaction has become very stable.
However, the raw material is only about 40 mg, which is a bit anxious...
We can only hope that the product has more than 15 mg, so that we can know whether the photoelectric performance of the material has been further improved through the simulation experiment system.
...
After one o'clock, the organic trio arrived at A501 of the Microelectronics Building.
After resting for a while, the three of them started the preparatory work for the experiment, and then put on all the equipment, entered the laboratory, and each occupied a fume hood.
Xu Qiu counted the time. The nitration reaction time is eight hours. It is now 1:30, and the last school bus in the evening is 9:30. It must be too late. It seems that Zhangjiang will be staying again today.
The other three Suzuki coupling reactions, because they are reactions of small molecules rather than polymerization, have a short reaction time, about four hours.
After a comprehensive judgment, he decided to cast the nitration reaction first.
It’s time to play fuming nitric acid again. After Xu Qiu made other preparations, he carefully took out the reagent bottle of fuming nitric acid from the special acid reagent cabinet, and then prepared the methylene chloride solution of fuming nitric acid in a fume hood. .
Named fuming nitric acid, it does "smoke". White smoke will be emitted when the reagent bottle is opened or during the transfer process. This is formed by the volatilized nitric acid molecules encountering water vapor in the air. Of course, because Nitric acid itself will decompose to produce nitrogen dioxide, so it will also be accompanied by the appearance of red-brown gas.
For the sake of laboratory safety, there are multiple reagent cabinets in the laboratory, including ordinary reagent cabinets for general solvents, explosion-proof reagent cabinets for some dangerous drugs, and reagent cabinets for acid, etc., each reagent There is a list of medicines on the cabinet, which contains the Chinese and English names of the medicines, aliases, approximate stocks, and printed MSDS information.
Although there are reasons to cope with surprise safety inspections by schools and departments, the sorting out of this information can still play some role.
Moreover, the current policy wind is becoming more and more strict. In principle, the amount of reagents purchased should not exceed the laboratory's one month's consumption. Moreover, there are more stringent review steps for acetone, a precursor to poison, and large amounts of storage are not allowed .
It is still necessary to grasp the existing drug inventory in the laboratory. If a large number of drugs are found out, the students are usually fine, and Teacher Wei may have to go back.
Except that fuming nitric acid is more dangerous to use, the nitration reaction itself is not difficult, and Xu Qiu quickly completed the reaction.
Next are three other Suzuki coupling reactions.
Re-evaporate the solvent tetrahydrofuran THF, prepare glass instruments, nitrogen balloons and other experimental equipment.
The difficulty of this reaction is not low. The THF/water two-phase reaction system requires nitrogen protection, which is easy to make mistakes.
Therefore, Xu Qiu concentrated his mind and paid attention to the details of each experiment, and also applied some small techniques summarized in the early Stille coupling reaction, such as applying vacuum silicone grease to ensure air tightness.
...
"Finally done." Xu Qiu let out a long sigh.
He stared at the four reaction flasks for a while, recalled the operation during the reaction, and felt that there should be no problem, and then he turned his attention to the laboratory.
Han Jiaying was not there. She started the synthesis of two 3D-PDI molecules she designed. Today is just the first step. After casting two reactions, she greeted Xu Qiu and returned to the office~EbookFREE.me~Chen Wanqing Instead, she was sitting on a round stool, operating the liquid chromatograph.
Xu Qiu walked to the senior sister, stood still behind her, deliberately learned the tone of Teacher Wei, and greeted: "How?"
Chen Wanqing shook unconsciously, turned her head and gave Xu Qiu a roll of eyes, but she explained: "From the results of the click board, the response is pretty good. It shouldn't be difficult to separate and purify."
Xu Qiu asked casually: "Is this unit A or unit D?"
"Unit D, last week's synthesis and processing," Chen Wanqing strove to the fume hood next to her, "Hey, unit A is still over there, the last step of the reaction, just recently cast."
"Well," Xu Qiu nodded, "Then you can get the final product tomorrow."
"Yes, I hope this C4 can be more powerful." Chen Wanqing shrugged, obviously lacking confidence.
"Believe in yourself, this time it will definitely work." Xu Qiu encouraged, and then silently added a "weird" in his heart.