Chapter 200: Finally brought my little brother to hope

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Weekly meeting.
The work of Wu Feifei, Tian Qing, and Duan Yun are all progressing steadily.
After Tian Qing's report was over, Teacher Wei gave her additional research work on perovskite quantum dots, and handed her a bunch of documents to let her first understand this field.
Last week, Chen Wanqing wrote a week-long summary. Xu Qiu and Han Jiaying revised their articles for a week, but there was nothing to report.
Approaching the end of the group meeting, Teacher Wei suddenly said: "Xu Qiu, share with you the TRPL-related knowledge you summarized, how about?"
Although it was a questioning tone, there was no option to refuse. Xu Qiu was stunned for a moment and nodded in agreement: "I need to go back to the laboratory to get the PPT file."
Wei Xingsi waved his hand, "Okay, go."
On the way back to 216, Xu Qiu couldn't help wondering if it was because when he was revising the manuscript with Teacher Wei on Sunday, he said "it took a lot of time to figure out TRPL related knowledge". ?
At that time, his thought was "The crying child has milk to eat, you don't say how the boss knows how hard you work."
Now the benefits are not seen, but the trouble is coming.
‘It’s supposed to be a document report for Teacher Wei. 'Xu Qiu comforted herself.
Soon, he returned to 218 with the PPT and began to explain.
The content that Xu Qiu summarized was not all TRPL-related knowledge, but also involved some TAS research content, which was packaged together by him.
In the middle, Mr. Wei asked him several questions, such as "classification of charge recombination phenomena", "time scale of recombination process", "is the fluorescence lifetime longer, the better", etc., and he answered them in turn.
Except Duan Yun, everyone else listened carefully, including Wu Feifei and Tian Qing also thoughtfully.
After about half an hour, Xu Qiu finally finished his report.
"It's a good summary," Wei Xingsi praised, and then said: "This part can be mainly handed over to Tian Qing afterwards. She is responsible for the research on the mechanism."
Xu Qiu had no objection. ‘The main responsibility is given to Tian Qing. It doesn’t mean that he can’t study. On the contrary, he will have a companion who can discuss issues. ’
The TRPL and TAS he summarized are mainly optical aspects, that is, theoretical research on polymer films, while CELIV and TOF, which Tian Qing was responsible for before, are based on theoretical research on battery devices. The emphasis between the two is different, but Essentially, they are all things in the microscopic charge transport.
Seeing that Xu Qiu and Tianqing had no opinion, Wei Xingsi continued: "Next, I plan to buy a TRPL instrument. I have already contacted HORIBA, Dr. Qiu who is in charge of the regional distribution of Magic City in China. You call him Manager Qiu. Yes, I just gave Xu Qiu your contact information. If you have any specific needs, you can contact."
"Okay." Xu Qiu nodded in response and secretly analyzed:
Teacher Wei suddenly wants to do perovskite quantum dots. On the one hand, it may be related to his going to Suzhou University to test, because Hou Kaihua is doing perovskite quantum dots. What he talked about between the two may be inspired;
On the other hand, TRPL is one of the main characterization instruments for quantum dots. With the addition of a device for measuring the efficiency of the quantum dots, the characterization methods are complete. As far as he knows, Mr. Wei’s friend Sun Zheng from the Department of Chemistry has a measuring instrument. Efficient equipment.
Unexpectedly, he decided on a whim when he submitted his manuscript and decided to vote higher, choosing AEM, which has actually caused a series of chain reactions.
While Xu Qiu’s thoughts were floating, he heard Teacher Wei’s voice again:
One of my doctoral positions will be given to Xu Qiu in the next semester, and another master’s position has now been confirmed. His graduation project will be done on my side, and he will come over when the school officially starts."
Teacher Wei smiled and added: "Speaking of which, Sun Wo and Wu Feifei are from the same school, both from East China University. Every year, East China University recommends many students to our school, and the students are pretty good. , When Sun Wo comes over, Wu Feifei, you will take him to make perovskite."
"Okay, okay." Wu Feifei's eyes lit up, looking forward to the stars and the moon, and finally looked forward to the little brother.
'It’s no wonder that Teacher Wei added so much work to Tian Qing. Originally, he wanted her to leave Feifei Wu to work on her own. However, he also found a new helper for Feifei Wu. This time she is a serious graduate student, and she should not be like Cheng Mingbo before. That's not reliable. ’
Wei Xingsi continued: "There is also TAS. I found a student who graduated from our school, Feng Shengdong. Now he is doing research at Lund University in Sweden. His boss mainly does laser-related optical characterization, which is a very big The group, including conventional TRPL, TAS, and terahertz, can also do low-temperature experiments. I am talking with Feng Shengdong these days."
Then, he waved his hand, "Okay, that's it for today, the meeting is over."
...
After lunch, Xu Qiu, Han Jiaying, and Chen Wanqing took the school bus to Zhangjiang, and the three of them rushed to the Microelectronics Building.
Previously, it was delayed for more than a week due to articles and drugs. Today, I finally came to the long-lost Zhang Jiang laboratory.
"Ah, this smells like organic solvent."
"It's really nostalgic."
"Don't miss it, take protective measures and beware of poisoning."
The experimental plan has been planned and completed in advance. The research direction is Xu Qiu and Han Jiaying in charge of the PDI system, and Chen Wanqing in charge of the A-D-A system.
The three experimented independently, because they all explored new fields from scratch, and there was nothing good to teach. The conditions of reference to the literature were nothing.
And all have experience in polymerization reaction, basically don't worry about the safety of the experiment.
There are a total of six fume hoods in Zhangjiang Lab~EbookFREE.me~ The first two are used for organic experiments, one for inorganic experiments, one for rotary steaming equipment, one for liquid chromatography, and one for Centrifuge.
However, now that Han Jiaying has joined in, the two organic fume hoods are not enough.
"Move the centrifuge? It doesn't seem to need ventilation."
"Yes, let's put it on the experiment bench outside. I will move one end and you two move the other end."
"Okay, come on."
The area of ​​Zhang Jiang laboratory is very large, and the area of ​​the experimental platform is naturally also very large. There is no need to worry about insufficient space at all, which is in sharp contrast with Handan Laboratory.
Afterwards, they each occupied a fume hood and started the experiment.
"Sister, come on~"
"Brother, come on~"
The difficulty of Chen Wanqing's experiment is very high. It is necessary to start from scratch and synthesize a complex A-D-A molecule in eleven steps.
Xu Qiu and Han Jiaying started practicing with simple PDI elements.
The raw material is perylene tetracarboxylic dianhydride. The center of the molecule is a large conjugated fused ring composed of five benzene rings, which is the so-called perylene, or perylene. Connecting an acid anhydride above and below the perylene is perylene tetracarboxylic acid dianhydride. Formic acid dianhydride.
Because it has no branches, it has poor solubility in organic solvents such as chlorobenzene and chloroform.
Fortunately, the acid anhydride group can undergo condensation reaction with the side chain amino group, thereby introducing the side chain and increasing its solubility.
Xu Qiu's task is to react with perylenetetracarboxylic dianhydride and various amino-substituted alkyl groups, such as 3-aminopentane, 6-aminoundecane, 7-aminotridecane, and 2-ethylhexylamine. and many more.
The two assigned two systems, Xu Qiu’s PDI-2 and PDI-5, and Han Jiaying’s PDI-6 and PDI-EH.