The 2019 Nobel Prize in Chemistry was rewarded to three scientists, John B. Goodenough, M. Stanley Whittingham and Akira Yoshino, for their great contribution in the field of lithium-ion batteries. After more than 40 years' development, lithium-ion batteries have been widely used in our daily life, which is inseparable from the creation, exploration and hard work of millions of scientists all over the world. This paper expatiates the scientific spirit of innovation, pragmatism, interdiscipline and cooperation, and demonstrates the importance for scientific research as well as talents cultivation from the views of the stories of the Nobel laureates especially of Professor Goodenough.

This article explored the teaching organization of "health culture promotion" in the course of nutrition chemistry. Students' expectation of participation, participation degree in activities and information acquisition rate after activities were investigated. The results showed that "health culture promotion" enabled the students to develop their knowledge into a comprehensive application of knowledge and other practical abilities, which plays a radiating role in the popularization of nutritional chemistry in society.

Analytical chemistry laboratory is an important part of chemistry laboratory and analytical chemistry learning. In order to improve the teaching quality, practical ability, problem-solving ability and innovative ability of students, the flipped classroom teaching mode based on micro-course has been applied in the analytical chemistry laboratory. It is proved that this teaching mode aroused the learning passion, improved the comprehensive experimental skills, consolidated the theoretical knowledge, and cultivated scientific research thinking, thus, really achieved the goal of creative talents.

Based on the actual situation of local application-oriented universities, the necessity and urgency for constructing the undergraduate training model of materials chemistry are addressed. Some beneficial experiences on the specialty construction, containing the reform of curriculum, lecturing, laboratory teaching, off-campus practice and useful exploration of professional teacher training, differential development, integration with the local economy, are highlighted. Analyses of the admissions and employment data show the positive effects of the reform. Under the guidance of policy and the fusion mode of education and industry, a stable and effective training model suitable to the local application-oriented universities has been built.

The teaching quality improvement reform is carried out in this paper, in view of the problems existing in the teaching of the core courses of organic chemistry. Through refining the teaching implementation plan, the students are guided to preview actively before class. Through the segmented class teaching, students participate more efficiently in the class. Through the multi-level practice after class, the students' comprehensive ability is improved. By improving the challenge of the course test, students are guided to focus on the development of thinking skills and comprehensive capability. After a school year's teaching reform practice, the learning initiative, thinking ability and comprehensive ability of students have been significantly improved. This lays a solid foundation for the cultivation of innovative talents with knowledge, ability and comprehensive thinking.

The practice of Analytical Chemistry Group Discussion Class (ACGDC) series at College of Chemistry and Molecular Engineering, Peking University is briefly introduced.

Electronegativity has been one of the most important concepts in chemistry. It plays a critical role in fundamental chemistry courses. This paper proposed a view of three periods on the development of electronegativity. The process of deepening and gradually developing in understanding of electronegativity scale is briefly described. On the basis of a brief description of different electronegativity scales, the difference between absolute electronegativity scale, Pauling type electronegativity scale, Allen electronegativity scale and its modified Rahm electronegativity scale were discussed emphatically. The re-discussion is undoubtedly helpful for the in-depth understanding about the concept of electronegativity and the reform of teaching contents in fundamental studies.

This review provides a brief view of the cisplatin's mechanism of action, toxicity and drug resistance of cells, and points out the defects and the developing direction of the anticancer platinum drugs.

The most prominent feature of coordination compounds is the coordination bond between the central atom and the ligand around. It is an important theoretical component of the coordination chemistry to study the electronic configuration and geometry of the complexes and clarify the nature of coordination bonds. Based on the brief review of basic bonding theory, the high-level original domestic works in recent years are introduced in this article. Novel types of metal complexes with unique aromaticity, low oxidation state, high coordination number and actinide metal are emphasized with respect to the electronic configuration and bonding characteristics, which will be beneficial for enriching and developing the basic theory of coordination chemistry.

Aggregation-induced emission (AIE) molecules exhibit intense emission in aggregated state but weak or even no fluorescence in dispersed state. The first AIE molecule was reported in 2001. Since then, various of AIE molecules were developed successively, which were widely applied in fields of photoelectric materials, fluorescence chemosensors and bioimaging, etc. Salicylaldehyde azine is a classic AIE molecule with the merits of simple synthesis and intense luminescence. In this comprehensive experiment, the precursor salicylaldehyde is first synthesized using Reimer-Tiemann reaction. Then it reacts with azine to obtain the AIE molecule of salicylaldehyde azine. Through the experiment, students will practice the synthetic method of Reimer-Tiemann reaction and grasp the origination of AIE characteristics of salicylaldehyde azine. Also, students will learn about the applications of AIE molecules through class and network learning.

In this paper, a comprehensive chemical experiment is introduced, including the preparation of organic-inorganic hybrid perovskite photovoltaic materials by one-step solution method. The characterization of crystal structure and morphology, the test of UV-Vis absorption spectrum, and the study of thermal stability of the obtained materials were carried out.

The preparation of hexamine cobalt (Ⅲ) chloride is an important basic experiment in inorganic chemistry laboratory. During the preparation process, the change of reaction conditions can easily alter the composition of cobalt(Ⅲ) complexes. In order to help teachers and students better understand and establish the relationship among the experimental preparation conditions, the compositions, and the stability of different complexes, [Co(NH₃)₆]Cl₃, [Co(NH₃)₅Cl]Cl₂and[Co(NH₃)₅(H₂O)]Cl₃ complexes were prepared and studied. Through comparing their respective formation processes and preparation conditions, we could think deeply and apply basic chemical principles in discussing the experimental phenomenon, so as to stimulate students' research interest and cultivate their scientific research abilities.

In this paper, the luminescent properties of rare earth containing polyoxometalates were investigated by combining theory with experiment. Firstly, a series of rare earth containing polyoxometalates clusters Na₉LnW₁₀O₃₆ (Ln³⁺=Sm³⁺, Eu³⁺, Tb³⁺, Dy³⁺) were synthesized by the conventional aqueous solution synthesis method. Secondly, the structure of clusters was characterized by powder X-ray diffraction, FTIR spectroscopy and Raman spectroscopy. Finally, the optical properties of the clusters were investigated by UV-Vis spectra and fluorescence spectra. Through systematic experiments, students have a comprehensive and profound understanding of the structure characterization and luminescence properties of rare earth clusters.

In order to effectively enhance students' interest and enthusiasm in learning buffer solution, a case of introducing real daily necessities into laboratory teaching is recommended. The experimental design extends the property test to the baby wipe, and changes the content of the experiment into the verification of the working principle of wipe, instead of preparation of simple acid-base system and related verification experiments in the past. Through the implementation of this experiment, students generally reflected that it can effectively stimulate their enthusiasm and interest in learning buffer solution related contents, and ultimately promote them to recognize the characteristics and buffer mechanism of pH changes in buffer system.

Elemental chemistry is an important part of inorganic chemistry. The study on the properties and reaction rules of inorganic compounds through experimental methods can make the traditional descriptive teaching a three-dimensional teaching that is easy to be received by students. This experiment includes the synthesis of simple inorganic compounds and the utilization of temperature-programmed reduction technique (TPR) to investigate the redox properties of those inorganic compounds. The TPR technique can directly reflect the reduction process of the samples and provide the qualitative information of the reduction ability from the peak location, quantitative information of the reduced species from the peak intensity, and the interaction between the components. The TPR technique can be easily applied in college teaching for chemical laboratory courses.

In this paper, the device for phase diagram development experiment has been modified, which can be used to measure the boiling point and dew point of vapor-liquid equilibrium system simultaneously. In addition, the vapor-liquid phase diagrams of cyclohexane-ethanol under the conditions of no heat preservation, heat preservation and temperature compensation are drawn and compared. Results show that there is a great difference between the temperatures of boiling point and dew point both for the vapor-liquid equilibrium system with the simple heat preservation or without the heat preservation, and the vapor-phase lines based on the boiling point temperature are seriously distorted. With the temperature compensation for the system, the two vapor-phase lines according to the boiling point and the dew point temperature are in good agreement, which means the problem of vapor-phase fractionation effect has been solved.

Herein, we introduce a novel comprehensive chemical experiment called the synthesis and characterization of polyoxometalates (POMs)-based coordination polymer. Through the synthesis of POMs, organic ligand, POMs-based coordination polymer and corresponding characterization, the undergraduate students can learn about POMs-based coordination polymers, the frontier of inorganic synthetic chemistry. In the process of material synthesis and characterization, the ability of knowledge integration and the interest of chemistry learning have been improved. This experiment combines the knowledge of inorganic and organic chemistry as well as the training of experiments, instruments and data analysis capabilities, which can be used as a comprehensive chemical experiment for senior students.

Separation and purification is the key step in organic synthesis, which is 90% of the total work. To train undergraduates' laboratory skill of separation and purification from the crude product or mixture and improve their understanding ability of using the theory of extraction, distillation, recrystallization, the "Separation of three organic component mixtures" is arranged by the organic chemistry teaching group at the College of Chemistry and Chemical Engineering, Central South University. Students include the five-year and eight-year medical clinic, pharmaceutical and applied chemistry. In this paper, the two teaching schemes of acid and alkali separation in this experiment are discussed in detail, and the laboratory teaching effects of the two schemes are compared.

The Matrix Laboratory (Matlab) software was used to program the Plot function, and the hyperbolic curves of binary copolymer composites were drawn successfully by inputting the reactivity ratio of monomers. From the hyperbolic curve, the binary copolymerization behavior of two monomers can be observed simultaneously, and the varying regularity between the second monomer and the corresponding polymer composition can be visualized in one graph, which will be helpful to deepen the understanding for the copolymerization reaction of two monomers.

McLafferty rearrangement is an empirical rule proposed for the rearrangement of molecular ions in mass spectrometry. Further expanding the concept, cleaving process and application of classic McLafferty rearrangement, the general McLafferty rearrangement is formed. In the general McLafferty rearrangement, the γ-H transference of six-membered ring cooperatively completes in one step. The cooperative rearrangement of molecular ions can also occur through a six-membered or five-membered ring transition state and the γ-R or β-H (R) of molecular ions accomplishes the transference, which results in different fragment ions. This general McLafferty rearrangement can occur in various compounds with most functional group, which is helpful in mass spectrometry analysis and compound structure research and extend the breadth of the applications.

In this paper, a simple thermodynamic model of crystal macroscopic morphology and the cause of the defects were suggested. By virtue of growing alum(K) crystals and measuring their macroscopic parameters in the inorganic laboratory for undergraduates, we can calculate the thermodynamic parameters of alum, thus explaining the macroscopic morphology and defect of alum(K), and predicting the possibility for alum(K) to generate octahedral crystals and its self-normality.