Beilin University's scientific research achievements were selected as "Nature" research highlights!

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Recently, Professor Peng Feng, the School of Materials Science and Technology of Beijing Forestry University, took the lead in discovering the room temperature phosphorus light of high -crystalline polycogenic semi -cellulose extracted by thick alkali. "Physical Science" was published online, which aroused high attention in the field. A few days ago, "Nature" magazine selected the result as Research Highlights, and reported the title of "Paper-Mill Waste that Glows in the Dark", and fully affirmed from the perspective of the reuse of the papermaking and paper-making. The value and significance of the research work. Nature research highlight articles selected 300-400 tasks each year, mainly describing the scientific and technological research progress published in the scientific and technological field of this journal or other journals, paying attention to the main research results, emphasizing its significant significance, and providing further discussion on the theme of the research. Essence

Nature Research Highlights Report

"The hanging pearls are drooping, the day is like a star, and the night is like the moon." According to historical records, as early as the Emperor Yan, humans discovered natural inorganic phosphorus light materials, which are often called "night pearls". Yu Hui glowing is room temperature phosphorus light. Compared with inorganic phosphorus light materials, pure organic phosphorus light composites are mild, low -cost, and good biocompatibility. In recent years, it has attracted much attention. It has broad application prospects in the fields of anti -counterfeiting, sensing, optoelectronic components and biological imaging.

However, the development of pure organic room temperature phosphorus materials require tedious chemical synthesis and purification, it is difficult to prepare large -scale preparation, and its processing properties and the color tone of color tone are poor. In response to the above problems, Professor Peng Feng of the School of Materials Science and Technology carried out the research work based on natural polysaccharide -based organic chamber temperature phosphorus light materials, and the first to discover the long life of semi -cellulose, and the phenomenon of temperature phosphorus in the tune room of the harmonious chamber.

Unique approach:

Open the mysterious veil of the "Night Pearl" of the Crystagin

As a type of natural polysaccharide, semi-cellulose mainly includes polyganaccharin, poly glucose mananose, poly β-1,3-1,4-glucose and polyglog glucose. According to Professor Peng Feng, the author of the paper, semic cellulose extracted by dilute alkali solution is relatively low and the branch degree is relatively low and the branch degree is relatively high. In contrast, during the production of adhesive fibers, the semi -cellulose by -products produced after the solution of the dissolved pulp were treated with a thick alkali solution. Similar rigid structures of cellulose can effectively promote the production and stable three -line state light to light emitting ages. It is an ideal object to develop natural polysaccharide organic room temperature phosphorus materials.

Compared with the room temperature phosphorus light of different types of semi -cellulose, it was found that the straight -chain polyglifted has a unique structure of its structure, crystalline, and high rigidity, showing a 588 millisecond phosphorus life, which grew far to other natural polymers. In addition, the color of polygin has a long life and changes in the changes of the wavelength and delay time. In the external environment, the rest of the world can last 4 seconds, showing the lighting effect similar to the night pearl.

Swipe cocoon:

Unzip the temperature phosphorus password of polywinchard chamber

According to Lu Baozhong, the young teacher of the first author of the article, natural products such as cellulose, protein, and rosin in nature all have interesting photosynthesis. The mystery behind it has important scientific significance. Studies have shown that xylose has a color -adjustable phosphorus light, but after experimenting and testing, the phosphorus light of the piever is very weak, especially when it is stimulated by long wavelength ultraviolet light, the phosphorus light is difficult to capture with the naked eye. By comparing the ultraviolet-visible light absorption spectrum of pinoscan and polygin, it is found that polygin in the state of polymer state will produce stronger absorption in areas above 250 nm. As a result, polyproma has formed a larger and closer cluster, which is more conducive to emitting phosphorus light. At the same time, the molecular dynamics simulation proves that there are a large amount of hydrogen bonds in polygloge. The independent gradient model also shows that there is a non -co -price interaction between polymogly molecules. Essence Based on the common role of the above factors, the clusters of gathering constitute a variety of light emitting centers. At the same time, the macromolecular crystalline composition of polymantic sugar can effectively limit the molecular movement and stabilize the stability of the three -line inspiration. In the end The generation of phosphorus light.

Turning waste into treasure:

Promote green development in the field of temperature phosphorus light in organic rooms

The unique color change features of polymantic sugar give the material with excellent information encryption, storage and anti -counterfeiting functions. It can be further converted into a water -soluble bisperfacin polymanthin through oxidation reactions, giving them processing and forming characteristics. At the same time, the introduction of the pyrine can effectively promote the generation of three -line excitement. As high as 5.8%. Due to the good processing characteristics of water -soluble bispermidal polyquirus, it can be further prepared into a transparent phosphorus -light film material with large -sized and high mechanical strength with high -size and high mechanical strength. "This study has developed a new application area for semi -cellulose, that is, the color -temperature room temperature phosphorus light system, and provides theoretical basis and technical support for the design of semi -cellulose room temperature phosphorus material. In the future, it is necessary to meet the needs of low -cost, pollution -free, and high -performance phosphorus light information functional materials in the future. "Professor Peng Feng concluded. Thesis link: https://www.cell.com/cell- reports-Physical-science/FullText/S2666-3864 (22) 00306-x

Nature highlights link: https://www.nature.com/articleS/d41586-02281-y

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Beijing Forestry University New Media Alliance

Produced | Beijing Forestry University Party Committee Propaganda Department

Source | School of Science and Technology, Materials Science and Technology

Author | Lu Baozhong, Gou Yue

Review | Zhang Shouhong and Peng Feng

School pair | Li Junwei

Editor -in -law | Zhang Wei

Review | Zhu Tianlei

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