I Have a Research Support System

"That's right, I thought you would find out the clues in the morning, but I didn't expect to find out now," Xu Qiu deliberately sighed, "Hey——"

"Wow wow wow." Han Jiaying rushed over with bared teeth and claws.

Xu Qiu didn't expect her to be so fierce, she was startled immediately, and subconsciously took a step back.

Han Jiaying flinched.

Seeing that the school girl was about to fall, he had no choice but to meet her again.

Then, the two hugged each other.

The atmosphere in the room instantly turned pink.

The two stared at each other, but they didn't intend to let go of each other.

At this time, the door of A501's room was suddenly pushed open.

Tian Qing hurried in, "I'm coming."

Xu Qiu and Han Jiaying hurriedly separated.

Tian Qing scanned the two of them and asked suspiciously, "What were you two doing just now?"

Xu Qiu coughed lightly, and said calmly: "We are discussing the experiment." Han Jiaying beside him nodded very cooperatively.

"By the way, Senior Sister Tian Qing, why are you here? Are you going to synthesize perovskite quantum dots?" Xu Qiu changed the subject.

Tian Qing probably guessed something, but seeing that they didn't want to say anything, she didn't chase after them, and responded: "Yes, I sorted out the documents a while ago, and today I plan to synthesize a standard sample with reference to the documents."

Later, she explained: "I originally planned to come here with you on the school bus, but when I returned to the laboratory, I found out that you had just left, and I didn't see you at the school bus point afterwards."

"Well, we took the bus at 1:10, and Senior Sister Tian Qing took the bus at 1:30." Xu Qiu recalled, now that the number of school buses has increased a lot after school starts, and noon is the peak time, with an average of 20 minutes There is a shift every half an hour, and the next shift is exactly half past one.

"That's right," Tian Qing nodded, "Speaking of which, this is the first time for me to visit Zhang Jiang's laboratory after it was renovated. It was still an empty shell when I came here. I haven't used the chemistry laboratory for a long time. Before coming here, Chen Wanqing entrusted me to you, saying that she can ask you any questions."

"It's easy to say, easy to say." Xu Qiu agreed.

The three chatted for a while, and then entered the laboratory together.

It was the first time Tian Qing came here, she didn't get a lab coat, so she temporarily borrowed Chen Wanqing's lab coat to put it on. The two of them are not much different in stature.

Xu Qiu first introduced Tian Qing to the laboratory safety issues, such as wearing three-layer gloves, disposable activated carbon masks, not touching casually, and toxic substances everywhere. not difficult.

Then he went to the junior girl to check her progress. Her first reaction was the Stille coupling reaction, so he ordered to test the purity of the sample before the reaction.

After the two of them settled down, Xu Qiu started his own experiment.

The reaction is a Suzuki coupling reaction, and the starting materials are PDI-Br and 1,3,5 tris-boronate benzene.

Four PDI molecules were previously synthesized, with four monobromine substitutions.

Xu Qiu made a selection and decided to use PDI-5 and PDI-6 with relatively long side chains.

This is based on previous experience with the synthesis of dimers, where longer side chains perform better.

The 3D-PDI to be synthesized now is equivalent to trimerization and tetramerization to some extent, with a larger molecular structure, and the demand for the length of the alkyl side chain should be longer in theory.

Later, if necessary, PDI-8 with longer side chains can be developed, or side chain modifications can be made to the PDI molecule.

Xu Qiu took out the PDI-5 and PDI-6 reagent bottles, with the remaining amount marked on them, about 120 and 180 mg respectively.

After thinking about it, he decided to use 120 mg and 90 mg respectively, leaving 90 mg of PDI-6 for the school girl.

Start experimenting.

Re-distilled the reaction solvent, this time using tetrahydrofuran THF, the first time to do Suzuki coupling reaction, Xu Qiu directly followed the conditions in the literature.

Prepare a clean two-necked flask, a stirring bar, a condenser tube, and a nitrogen balloon, and set up the experimental device.

Weigh the raw material and dissolve the raw material with redistilled THF.

Prepare an aqueous solution of sodium carbonate and add it to the reaction flask. This reaction needs to be carried out under weakly alkaline conditions.

Theoretically speaking, pure THF and water are miscible, but due to the presence of sodium carbonate inorganic salts, they cannot be completely miscible, and will separate into water phase and THF phase.

So he added a few more drops of phase transfer catalyst.

Use nitrogen balloons to pump three rows three times to ensure the nitrogen atmosphere in the reaction vessel.

Finally, the catalyst tetrakis (triphenylphosphine) palladium was added, and the nitrogen balloon was pumped three times for three rows again, the temperature was raised rapidly, the condensed water was turned on, and the outer surface of the reaction vessel was covered with aluminum foil.

Submit two responses in turn.

Because it took some time to guide Tian Qing to familiarize himself with the chemistry laboratory today, he was left alone when Xu Qiu finished his application in the reaction laboratory, and the junior girl and Tian Qing had already walked back to the office.

He checked the laboratory and found that both Han Jiaying and Tian Qing were responding normally, so he took off his lab coat and walked towards A501, Tian Qing's loud laughter could be heard through the door.

He pushed open the doorknob with his small arm and walked straight to the sink.

In the office, Han Jiaying and Tian Qing were chatting and laughing. When Xu Qiu came in, they just paused, and then continued to chat about some topics between women.

The two little rich women still have a lot of topics in common.

Xu Qiu was also a little surprised, it was rare for the two of them to chat so happily before.

But after thinking about it, it might be because Han Jiaying has been with him for a long time, and she doesn't usually communicate with Tian Qing much.

People who are half-baked are usually easy to talk to, but the more familiar people are, sometimes the less they have to talk about.

After washing his hands, Xu Qiu shook his hands by the sink, went back to his seat and sat down, turned on the computer, and was about to code and write a summary, when he suddenly thought of the email sent by the counselor Yu Qiang a few days ago, informing him of several things, Choose a graduation design topic, write an opening report, and have a class meeting on Tuesday.

He has already selected the subject of the graduation project, which is the one submitted to Mr. Wei before, but the opening report has not been written yet.

"Senior Tian Qing, do you still have the document of your proposal proposal report when you graduated, please send me a copy."

"Okay, give me a USB flash drive, and I'll copy the whole thing to you."

A few minutes later, Xu Qiu took back the USB flash drive and inserted it into the computer. There was only one folder "Graduation Project" in it. When he clicked on it, there were dozens of files, including the opening report, mid-term report, graduation project and so on.

Referring to Tian Qing's template, the content of the opening report is just the preface of the article, mainly including the current development status, problems and a feasible research direction.

Xu Qiu copied and pasted from the previous fund annual summary report, and then revised and modified it. It took more than ten minutes to complete his opening report.

In the afternoon, after Tian Qing finished her reaction and got the product, she left in a hurry.

Xu Qiu and Han Jiaying were the only ones left in the lab. Both of them tacitly did not mention what happened at noon, and they carried out the post-response treatment together.

Calvin is sick.