I Have a Research Support System

Monday group meeting.

The work of Wu Feifei, Tian Qing, and Duan Yun is progressing steadily.

After Tian Qing's report, Teacher Wei added additional research work on perovskite quantum dots to her, and handed her a bunch of literature, asking her to have a preliminary understanding of this field.

Last week, Chen Wanqing wrote a summary of the week, Xu Qiu and Han Jiaying revised the article for a week, but there was nothing to report.

Near the end of the group meeting, Teacher Wei suddenly said: "Xu Qiu, how about sharing your knowledge about TRPL that you have summarized?"

Although the tone was questioning, there was no option to refuse. Xu Qiu froze for a moment, nodded and agreed: "I need to go back to the laboratory to get the PPT file."

Wei Xingsi waved his hand, "Okay, let's go."

On the way back to 216, Xu Qiu couldn't help but wonder if it was because when Sunday He and Mr. Wei were revising the manuscript, he casually mentioned the reason that "it took a lot of time to figure out the knowledge about TRPL". ?

At that time, his thoughts were "crying children have milk, how can the boss know how hard you work if you don't tell me."

Now that the benefits are gone, troubles are coming.

‘Take it as a literature report for Mr. Wei. ’ Xu Qiu comforted himself.

Soon, he returned to 218 with the PPT and began to explain.

The content Xu Qiu summarized was not all TRPL-related knowledge, but also involved some TAS research content, which he also packed together.

In the middle, Mr. Wei asked him several questions, such as "classification of charge recombination phenomena", "time scale of recombination process", "is the longer the fluorescence lifetime, the better", etc., and he answered them in turn.

Except for Duan Yun, everyone else listened carefully, including Wu Feifei and Tian Qing, who were also thoughtful.

After about half an hour, Xu Qiu finally finished all the reports.

"The summary is very good," Wei Xingsi praised, and then said: "This part can be mainly handed over to Tian Qing in the future. She is responsible for the research on the mechanism."

Xu Qiu had no objection. 'Mainly handed over to Tian Qing, it doesn't mean he can't study, on the contrary, he has an extra partner who can discuss the problem afterwards. '

The TRPL and TAS he summarized are mainly about optics, that is, the theoretical research on polymer thin films, while Tian Qing’s previous CELIV and TOF are based on theoretical research on battery devices. The focus of the two is different, but In essence, it is all about charge transport at the micro level.

Seeing that neither Xu Qiu nor Tian Qing had any objections, Wei Xingsi continued: "Next, I plan to buy a TRPL instrument. I have already contacted HORIBA. Dr. Qiu, who is in charge of regional distribution in Shanghai, you may call him Manager Qiu. Okay, I just gave Xu Qiu your contact information, you can contact me if you have any specific needs."

"Okay." Xu Qiu nodded in agreement, secretly analyzing:

Mr. Wei suddenly wanted to make perovskite quantum dots. On the one hand, it may have something to do with his going to Sioux City University to test, because Hou Kaihua is doing perovskite quantum dots. What they talked about may be inspired;

On the other hand, TRPL is one of the main characterization instruments for quantum dots, and with the addition of a device for measuring the efficiency of quantum dots, the characterization means are complete. As far as he knows, Sun Zheng, a friend of Mr. Wei’s Department of Chemistry, has a measurement of quantum dots. efficient equipment.

Unexpectedly, on a whim, when he submitted the manuscript, he decided to try to vote higher and choose AEM, and now it has caused a series of chain reactions.

While Xu Qiu was thinking about it, he heard Teacher Wei's voice again: "One of my doctorate quotas for next semester has been given to Xu Qiu, and another master's quota has been confirmed now. Sun Wo, who came from a foreign school for graduate studies, His graduation project will be done by me, 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 source of students is not bad. , When Sun Wo comes over, Wu Feifei, you can take him to make perovskite."

"Okay, okay." Wu Feifei's eyes lit up, she looked forward to the stars and the moon, and finally her little brother came.

No wonder Mr. Wei added so much work to Tian Qing. He originally wanted her to leave Wu Feifei and work alone. However, he also found a new helper for Wu Feifei. This time he is a serious graduate student. That's unreliable. '

Wei Xingsi continued: "There is also the matter of TAS. I found a student who graduated from our school before, Feng Shengdong, and now he is doing research at Lund University in Sweden. His boss is mainly doing laser-related optical characterization, which is a very big one. The group, including conventional TRPL, TAS, and terahertz, can also do low-temperature experiments, and I am talking with Feng Shengdong these days."

Then, he waved his hand, "Okay, that's it for today, the meeting is over."

...

After finishing lunch, Xu Qiu, Han Jiaying, and Chen Wanqing took the school bus to Zhangjiang, and then the three went straight to the microelectronics building.

Previously, due to delays of more than a week due to articles and medicines, today I finally came to the long-lost Zhang Jiang laboratory.

"Ah, it smells like organic solvent."

"It's really nostalgic."

"Don't miss it, take protective measures and be careful of poisoning."

The experimental plan has been planned in advance. The research direction is that Xu Qiu and Han Jiaying are in charge of the PDI system, and Chen Wanqing is in charge of the A-D-A system.

The three experimented independently, because they were all exploring new fields from scratch, and there was nothing to teach, so just refer to the conditions in the literature, just be reckless.

Moreover, they all have experience in polymerization reactions, so there is basically no need to worry about the safety of experiments.

There are a total of six fume hoods in Zhang Jiang's laboratory. The previous two were used for organic experiments, one for inorganic experiments, one for rotary evaporators, one for liquid chromatography, and one for centrifuges.

However, now that Han Jiaying has joined in, two organic fume hoods are not enough.

"Move the centrifuge? It doesn't seem to need ventilation."

"Okay, let's put it on the laboratory table outside, I will move one end, and you two will move the other end."

"Okay, come on."

The area of ​​the Zhangjiang laboratory is very large, and the area of ​​the experimental bench is also very large, so there is no need to worry about the lack of space, which is in sharp contrast with the Handan laboratory.

Then, they each occupied a fume hood and started the experiment.

"Senior, come on~"

"Brother, come on~"

The degree of 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 to practice with simple PDI molecules.

The raw material is perylene tetracarboxylic dianhydride. The center of its molecule is a large conjugated condensed ring composed of five benzene rings, which is called perylene, or perylene. An acid anhydride is connected to the upper and lower sides of perylene to form perylene tetracarboxylic acid dianhydride. Formic dianhydride.

Because it has no branched chains, it has poor solubility in organic solvents such as chlorobenzene and chloroform.

Fortunately, the acid anhydride group can undergo condensation reaction with the amino group with a side chain, thereby introducing a side chain and increasing its solubility.

Xu Qiu's task is to react with perylenetetracarboxylic dianhydride and various amino-substituted alkanes, such as 3-aminopentane, 6-aminoundecane, 7-aminotridecane, 2-ethylhexylamine, etc. wait.

The two were assigned two systems, Xu Qiu's PDI-2 and PDI-5, Han Jiaying's PDI-6 and PDI-EH.