chemistry

Qing-Yun Chen

Qing-Yun Chen is a chemistry topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Qing-Yun Chen rather than just read about it. In short: Qing-Yun Chen (Chinese: 陈庆云; pinyin: Chén Qìngyún; 25 January 1929 – 2 March 2023) was a Chinese organic chemist and member of the Chinese Academy of Sciences, specializing in the field of organic fluorine chemistry. Biography Chen was born on January 25, 1929, in Yuanjiang, Hunan Province, into a family that was not particularly wealthy.

Key takeaways

Qing-Yun Chen belongs to chemistry; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Qing-Yun Chen to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Qing-Yun Chen from memory before moving on to harder problems.

Reference excerpt

Qing-Yun Chen (Chinese: 陈庆云; pinyin: Chén Qìngyún; 25 January 1929 – 2 March 2023) was a Chinese organic chemist and member of the Chinese Academy of Sciences, specializing in the field of organic fluorine chemistry.

Biography Chen was born on January 25, 1929, in Yuanjiang, Hunan Province, into a family that was not particularly wealthy. His parents attached great importance to education and did their best to ensure that he received a formal education; in 1948, Chen was admitted to Peking University, from which he graduated four years later with a degree in chemistry. After finishing his bachelor's degree in 1952, he joined the Instrumentation Hall of the Chinese Academy of Sciences (now known as Changchun Institute of Optics, Fine Mechanics and Physics of the Chinese Academy of Sciences) as a research assistant. In 1956, after passing the USSR entrance exam, he entered the Institute of Elemental Organic Compounds of the Academy of Sciences of the Soviet Union to obtain his master's degree. He received his Ph.D. in organofluorine chemistry in 1960 under the supervision of Ivan Knunyants and N. P. Gambaryan. In 1960, after finishing his degree, he returned to China to study the development of fluorinated rubber, and in 1963, he was transferred to the Shanghai Institute of Organic Chemistry of the Chinese Academy of Sciences, where he continued the development of fluorinated rubber. Chen and colleagues found the chromate fog inhibitor F-53 and studied and synthesized a variety of chemicals. He then used this as a basis for a systematic study of single-electron transfer of fluoroalkyl halides. In 1993, he was elected as an academician of the Chinese Academy of Sciences. After 2000, Chen expanded his research interests to the synthesis and application of fluoroalkylated porphyrins. He developed two practical methods for the preparation of various fluoroalkylated porphyrins, the sulfinatodehalogenation reaction and the palladium-catalyzed cross-coupling reaction. On March 2, 2023, he died at the age of 94 in Shanghai.

Personal life In 1961, Chen married Zhi-Fen Yu and they had a son and a daughter.

References

Worked examples

Example 1 — a first encounter with Qing-Yun Chen

Start with the simplest possible case. Write down what Qing-Yun Chen claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In chemistry, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Qing-Yun Chen before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Qing-Yun Chen ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Qing-Yun Chen

In research: Qing-Yun Chen appears in chemistry research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Qing-Yun Chen in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Qing-Yun Chen is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1929 births, 2023 deaths, Chemists from Hunan, so understanding it makes those chapters shorter.
In everyday life: Look for Qing-Yun Chen outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Qing-Yun Chen” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Qing-Yun Chen in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Qing-Yun Chen means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Qing-Yun Chen out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Qing-Yun Chen in simple terms?

Why does Qing-Yun Chen matter?

Because it connects several chemistry ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Qing-Yun Chen?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Qing-Yun Chen.