Chapter 96: Solve the worries of senior sister

　　 After completing the experiment, Xu Qiu and Chen Wanqing began to prepare the PPT for the weekly group meeting.
　　 Teacher Wei also has format requirements for the PPT of the group meeting. The content of the report should be in English, which should be a habit he has cultivated abroad.
　　 To get a cover on the first page, you need to put the logo of Mordu University.
　　 If it is a work report, write "WorkReport" in large, black and bold words in the middle position, and center;
　　 If it is a literature report, write "LiteratureReport".
　　 is marked with the reporter and the date of the day.
　　 For each slide, or slide, a horizontal line should be drawn on it, and the main content of the page should be marked, that is, a title should be written.
　　 In addition, the aspect ratio should be 16:9, the number of pictures per page should not exceed three, the pictures should be enlarged in equal proportions, generally centered or horizontally distributed.
　　 Appropriately add concise text descriptions or tables next to the pictures.
The format of 　　 text is Arial or TimesNewRoman.
　　 The purpose of doing a good group meeting report is to lay a solid foundation for going out to make a report later.
　　 The PPT for the report should show as much information as possible in a limited space.
　　In academic reports, researchers in other fields are usually faced.
　　 They may not necessarily understand the content of the report described by the speaker, but more information is obtained by watching the PPT.
　　 Therefore, the production of report PPT is extremely important.
　　 Xu Qiu didn't do the PPT in the last group meeting. After the group meeting, Teacher Wei specially reminded him and asked him to learn the format with Chen Wanqing.
　　 His experiments are not much this week, so PPT is easier to do.
　　 Xu Qiu asked for her previous group meeting report from the senior sister, and copied the first page directly, and then revised the report time and speaker.
　　 On the second page, put the synthetic route map drawn in Chemdraw software before, about PBT4T.
　　 The third page lists the photoelectric performance of the two batches of devices in the form of J-V curve pictures and tables.
　　 On the fourth page, he writes his vision for future work.
　　 First, he analyzed the insoluble matter in the second batch of samples, which may be caused by the long reaction time.
　　Because reducing the content of the reaction solvent toluene can increase the concentration of the reactants, thereby increasing the reaction speed, the 24-hour reaction time may be too long.
　　 can shorten the reaction time to 12 or 18 hours.
　　Secondly, according to literature reports, the use of chloroform Soxhlet extraction to synthesize the crude product is also an effective means to solve the insoluble matter and can be tried.
　　Finally, the photoelectric properties of the PBT4T molecule are acceptable and worthy of further optimization. The next molecular structure regulation has two main directions:
　　 One direction is to change the number of thiophene units, such as synthesizing PBT2T, PBT3T, PBT5T, etc.;
"The other direction is to change the side chain in PBT4T, or to introduce heteroatoms, such as fluorine atoms.
　　 Xu Qiu personally is more inclined to the second direction, but he still lists both, he also wants to hear the opinions of Teacher Wei.
　　 It is the second time that he has done the PPT for the group meeting, so the progress is relatively slow. When he finishes it, Chen Wanqing has completed it.
　　 The two exchanged documents for the group meeting.
　　 After Xu Qiu checked, he found that the content of the senior sister was almost the same as his, except that the content of the later prospect was merged into the previous page by her because of too little.
　　 Moreover, the solubility issue is not mentioned above. It seems that I intend to avoid the serious and not to mention it temporarily.
　　 Her future experimental plan is to adjust the molar ratio of the two A units in her ternary conjugated polymer system from 1:1 to 7:3 and 3:7.
　　 Then compare the optical and electrical properties of the three ternary conjugated polymers.
　　 Xu Qiu pondered, the experimental idea of ​​Sister Sister and her last job are more and more similar, just exactly the same.
　　 However, this idea is not a big problem. It is still possible to tell a story and post an article.
　　 It’s just that there are relatively few new ideas, and they are piled up purely by workload. If the efficiency is not high, it is likely to be an article in the second district.
　　 "Xu Qiu, you have a good idea." After reading the work outlook section on the last page of him, Chen Wanqing said:
　　 "However, I am still a little worried about the danger of using chloroform for Soxhlet extraction."
　　 "I have considered this," Xu Qiu said:
　　"The entire reaction device is placed in a fume hood, and the reaction system is kept in a closed environment throughout the entire process, and a large amount of chloroform vapor will not escape.
　　 Coupled with maintaining good indoor ventilation and wearing a gas mask, under this multiple protection, there should be no major problems. "
　　 "But, I heard that chloroform can be converted into phosgene in the air. Phosgene is highly toxic." Chen Wanqing said.
　　 "The phosgene is highly toxic, but I checked it on the MSDS of the safety data sheet before," Xu Qiu said:
　　"Although chloroform reacts with oxygen under light and high temperature conditions and slowly produces phosgene, about 0.6-1% ethanol is added as a stabilizer to commercial chloroform.
　　Furthermore, when we extract Soxhlet, we can use nitrogen atmosphere, so we don't have to worry about chloroform vapor encountering oxygen. "
　　 Seeing that the senior sister was still indecisive, Xu Qiu said:
　　"Let’s do it, the first experiment will be handled by me, and both of our samples will be processed. If I’m okay, then you will handle the next batch.
　　In this rotation, there is a rest period in the middle. Even if it is slightly poisoned, as long as it is not exposed for a long time, the human body can alleviate the toxicity through its own metabolism. "
　　 Having said this, Chen Wanqing had no choice but to nod her head in agreement.
　　……
　　Senior sister, UU reading www. uukanshu.com Xu Qiu packed his schoolbags and returned to the bedroom.
　　 It’s early today, so you can go to the student bathroom to take a hot bath.
　　 Unexpectedly, he met Tao Yan on the way back to the bedroom after taking a shower.
　　 "What a coincidence, why did you come back from the lab so early today?"
　　 "The experiment ended earlier today."
　　 "How has the experiment progressed recently?"
　　 "It's okay, I'm mainly doing synthesis in Zhangjiang in recent days."
　　 "Is there an article soon?"
　　 "Almost, I will post the article when I come back from the summer vacation, I think about it," Xu Qiu recalled and said:
　　 "If I remember correctly, it was cast out on August 16, but there is no news yet. It is estimated that it will take another week or two to receive a reply."
　　 "Yes, when the article is published, don't forget to entertain you." Tao Yan said.
　　 "This hasn't settled yet, let's wait until it is officially published. My senior sister's article was rejected the first time it was submitted." Xu Qiu said:
　　 "By the way, how about you, how did you do in the Huo Xujun group? Is he good at posting articles?"
　　 "Hey, don't mention it," Tao Yan said with a sigh:
　　 "After joining the group, I realized that it is difficult to post articles in my field. Many of the previous masters and seniors had only produced a core core article just before graduation and barely graduated.
　　 But the good thing is that there is usually nothing to do, which is more suitable for my salted fish. "
　　 "Indeed, he mainly cooperates with enterprises. There are more horizontal projects, so it is more difficult to publish articles," Xu Qiu said:
　　 "But it should be richer, and there may be ways for you to solve work problems later."
　　 "Almost, after graduation, one of my seniors went to work in a company that our group cooperated with. Others still changed careers."