I Have a Research Support System

At 9:05, the last school bus arrived late.

After the students on the bus got off the bus, the students waiting at the stop of the school bus got on the bus in an orderly manner.

Xu Qiu and Han Jiaying sat down next to each other as usual.

After the driver saw all the students getting on the bus, he didn't wait any longer, turned off the lights in the car, and kicked the accelerator to start.

Probably rushing home to hug his wife.

Occasionally there were whispers of communication between students in the car, Xu Qiu yawned and leaned back in the chair.

Not long after, he suddenly felt his shoulders sink, this touch...

He looked to the side, and saw that the junior was leaning towards him with her head tilted.

Xu Qiu silently leaned his body inward, adjusted a comfortable posture, and narrowed his eyes.

...

The next day, Thursday.

Although it's a rest, it's not really a holiday. It's just that the intensity of the experiment is not as strong as before, and there are still work tasks.

Han Jiaying stayed at the Handan campus. She was in charge of the relevant characterization tests of twelve product samples. It was not difficult, and she didn't need to test by herself. They were all in the form of sending samples.

In fact, it is the test conducted in the simulation laboratory II, and it will be tested again in reality.

Of course, in reality, the cost issue must be considered in testing. It is definitely impossible to test all the characterization tests for each product, and there is still a trade-off.

There are twelve kinds of products, four of which are the products of the first step reaction, and eight kinds are the products of the second step reaction. All the characterizations of the four products of the first step have to be presented again, and the eight kinds of the second step depends on the school girl free play.

As for how to choose between these eight products, Xu Qiu is of course well aware, but he didn't tell his junior, but let her make her own judgment and play freely.

This is also a training and test for her, how to find the most manpower-saving and cost-saving method on the premise of obtaining the desired analysis results.

In the future, she is going to be the one to be alone, so she can't just say "senior brother, hurry up" when encountering problems.

Surely not.

He and his senior sister came to Zhang Jiang's laboratory.

Chen Wanqing's main task is naturally to complete the separation and purification of the products of her two reactions.

While assisting the senior sister to cross the pillar from the side, Xu Qiu finished the experiments of the previous few days.

For example, wash test tubes, wash various glass instruments, and prepare alkali tanks.

Before, he and his junior were busy with the pillars, and saved hundreds of dirty test tubes, but they didn't come to wash them in time. The same is true for other round-bottomed flasks and eggplant-shaped bottles. To make another one.

Then, after a busy day, Xu Qiu still didn't have time to write a review.

But today he didn't have to catch the last school bus, and he returned to Handan with his senior sister at eight o'clock in the evening.

Chen Wanqing went to Caiyi, but he didn't go with him. He went straight back to the dormitory, took the bathing equipment and rushed to the bathroom.

Congratulations, after almost a week, I finally took a hot bath again.

After returning to the dormitory again, I received a message from Han Jiaying: "Brother, do you have an appointment for an early exercise tomorrow morning?"

Xu Qiu thought for a while, and replied directly: "Okay, at 6:40 in the morning, I will wait for you downstairs in your dormitory."

Soon, the school girl returned an emoticon package [OK].

At that time, he just mentioned it casually, and he didn't expect that the school girl would agree, but since she took the initiative to mention it now, it would be good to have someone to accompany her to exercise.

After all, he has to complete the systematic tasks every week. If he exercises late, he may not be able to do it due to the experiment, so he arranges most of the exercise time in the morning.

...

On Friday, Xu Qiu waited downstairs in Han Jiaying's dormitory five minutes early.

There were not many students at this time, and Xu Qiu met three people along the way.

The main reason is that the school has not yet started. This Sunday is the student registration report, and the school will officially start next Monday.

If it is after the official start of school, this time point is the time for physical education classes to do early exercises, and there will be a lot of students on campus.

Of course, the matter of forging has nothing to do with him anymore, it is a matter for freshmen and sophomores.

'It turns out that my college life is not enough, and I only have the last semester left. '

"D--" Hearing the sound of the bedroom door being opened, Xu Qiu looked up.

"Senior brother, I'm here." Han Jiaying waved her hand, then trotted to his side, looking at him with a happy smile.

Xu Qiu looked the junior girl up and down, because she was going to run, she didn't wear a thick padded jacket, but was dressed in sportswear, full of youthful vigor.

The two looked at each other for a while, and Xu Qiu felt that he had to take the initiative to say something at this time, so he said, "Isn't it cold?"

Han Jiaying froze for a moment, then chuckled, "It's really cold, let's go quickly."

The playground is in the South District, not far from the dormitory, and the two of them walked for more than a minute.

There was no one inside, and the two jogged side by side on the outer track.

After running only one lap, Han Jiaying couldn't hold on any longer, she began to pant lightly, her face flushed.

Xu Qiu slowed down and suggested: "Let's take a rest, and then go to the cafeteria for breakfast?"

Han Jiaying refused, and said in a coquettish tone, "Just walk with me like this."

Looking at the girl under the rising sun, Xu Qiu was slightly distracted, and it took a while to realize: "Oh, good."

The two walked around once, twice...

Mainly exchange some campus gossip.

In this regard, Han Jiaying obviously knew better, but Xu Qiu did not give up.

Although he usually doesn't pay much attention, but there is Tao Yan in the dormitory, and he will be informed of any explosive news as soon as possible.

Before I knew it, half an hour passed.

"I'm a little hungry." Han Jiaying stopped suddenly.

"Let's go." Xu Qiu smiled.

There are also three canteens in the South District, namely Chunhui Canteen, South District Canteen, and a Halal Canteen.

Chunhui Canteen, whose name and meaning are unknown, is a one-story house with a small place, only four or five dining windows and a dozen dining tables. From one to twenty yuan.

The Halal canteen in the South District is not much different from other Halal canteens, so it is quite satisfactory.

The Southern District Canteen, referred to as Nanshi, also known as Difficult Food, is indeed the most unpalatable of the three major canteens in Handan Campus. However, since it is located in the dormitory area of ​​undergraduates, you have to eat if you don’t eat.

Of course, unpalatable is only relative. When Xu Qiu first entered school, he felt that the food in all the canteens of the Shanghai University was of the world's delicious level, which was more than one grade higher than the school canteen in his high school days.

But after eating too much, I also noticed the difference. Southern food is indeed the worst.

In the end, the two chose Nanshi.

The reason is that the other two don't do it earlier.

Xu Qiu turned around and asked, "Sister, what do you eat?"

Han Jiaying looked at the food placed in the window and said, "Egg pancakes, soy milk."

Xu Qiu said to the canteen master: "Two egg pancakes, two cups of soy milk, two fried spring rolls, and one tea egg."

Swipe your card and pick up your meal.

A total of 13 yuan was spent.

Xu Qiu was holding the dinner plate, and the two found a table and sat down side by side.

"Will you go to Zhangjiang later?" Han Jiaying asked casually after taking a sip of soy milk. The two of them hadn't talked about the experiment before.

"Let's not go today." Xu Qiu picked up the egg pancake and took a bite. "This Friday is a rather awkward time. Most people will have to work overtime if they submit their responses. If you don't work overtime, the next time you go back may be next Monday. This week day to register."

"Yes, I have to register on Sunday, I almost forgot about it." Han Jiaying was still drinking soy milk.

"By the way, what samples were sent yesterday?" Xu Qiu asked.

"I sent eight samples, including four kinds of PDI molecules obtained in the first step reaction, and the products No. 1, 3, 5, and 7 separated yesterday. I guess the latter four are monobromine-substituted PDI molecules. , but the specific results will not come out until about a week later.” Han Jiaying added:

"What shall we do with the experiment afterwards? Wait for the characterization results to come out, or?"

"Our hero sees the same thing. I also think these four are monobromides," Xu Qiu nodded. He had already obtained the results in advance, so he naturally knew that Xuemei's deduction was correct. It seems that she can still stand it. Trial, "Since this is the case, we can test the waters by submitting a reaction next week."

In fact, without using characterization means, it is also possible to roughly deduce the corresponding attribution of the product based on the phenomenon in the experimental process and the synthesis experience, but the accuracy rate cannot reach 100%.

For example, before Xu Qiu got all the characterization results, he was 70% sure of determining the product’s attribution. After getting one characterization result, the accuracy rate increased to 90%. After getting three characterization results, the accuracy rate was infinitely close to 100%. %.

Now that the school girl has guessed it right, she doesn't need to explain it to her when she responds later.

Xu Qiu ordered more meals, but the school girl ate slowly, and in the end the two resolved the battle at the same time.

After that, Han Jiaying went back to the dormitory to approve a coat, and then the two went to Caiyi together.

It is rare for the organic trio to go to Zhangjiang today, and the Handan laboratory is back to full capacity again.

When Teacher Wei came to inspect the laboratory in the morning, he was taken aback when he saw the three of them, and then asked about their work progress.

In fact, the main question was about the progress of Xu Qiu's PDI work. Chen Wanqing came back from Zhangjiang every day, and would stay in the dormitory until after get off work.

Xu Qiu sorted out his thoughts and reported truthfully:

"Four kinds of PDI molecules were synthesized, and 4-5 grams of high-purity products were obtained. Each product was reacted with 500 mg of raw material and liquid bromine, and eight kinds of monobromine and double bromine substituted products were obtained, which have been separated and purified. , Yesterday, samples of these materials were sent to test NMR, mass spectrometry, infrared, etc. for characterization.”

"The progress is so fast?!" Teacher Wei was shocked. He has experience in synthesis, and this is almost a normal two weeks of work.

He smiled, and patted Xu Qiu on the shoulder: "Thank you for your hard work, I will write a review today, relax, go out to eat tonight, and ask me to reimburse you when you come back."