Entering
periodic table

Chapter 1: Opening the Door to the Nano World
Chemistry in an Age Before Observation | Discovering Elements Through Electrolysis | Crossing Boundaries into Strange Worlds | How We Used Invisible Matter

Chapter 2: Looking into Nanoparticles with Electrons
What is an Atom? | Shooting Electrons into the Nano World | The Electron Microscope: A Look into Nanoparticles

Chapter 3: How to Make Nanomaterials
Top-down like sculpting, bottom-up like shaping | Nanomaterial synthesis is simpler but more expensive than you think | Cooking nanoparticles: heating and cooling | Building nanomaterials: layer-by-layer deposition

Chapter 4: Properties of Nanomaterials as Revealed by the Periodic Table
Chemistry's greatest invention: the periodic table | The unique colors of gold, silver, and copper nanoparticles | Semiconductors as small as nanoparticles | The smallest magnet and a wondrous converter

Chapter 5: Nanorobots: Healing Our Bodies
Small, Big, Small | Tracking Targets While Drifting Through Blood Vessels | Treatment and Diagnosis Using Nanochemistry

Chapter 6: Images Unfolded by Nanoprints and Displays
Blueprints and Prints of the Nanoworld | LEDs: Turning Electricity into Light | 2D Nanomaterials and Foldable Screens

Chapter 7: Nanotechnology: Protecting the Environment and Creating Energy
Collect, Separate, and Disassemble | Nanochemistry Generates Electricity | A New Way to Combat Environmental Destruction

Chapter 8: Controlling Chemical Reactions with Nanomaterials
Catalysts, Enzymes, and Nanomaterials | Nanocatalysts: Speeding Up or Slowing Down Chemical Reactions | Nanozymes and the Future of Life

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1.
Humanity will soon be living with nanotechnology.
Now that Feynman's predictions have become reality, a nano guidebook is essential for every citizen.

“There's plenty of room at the bottom.” Physicist Richard Feynman spoke of the possibilities of the nano-world in a lecture titled “There's plenty of room at the bottom” at the 1959 annual meeting of the American Physical Society.
Now, more than 60 years later, we are witnessing the world being revolutionized by nanotechnology.
News reports are daily of leading global semiconductor companies further miniaturizing their manufacturing processes to the nanometer level, and we also hear frequently about the commercialization of new materials made from nanomaterials.
The rosy prospect of developing side-effect-free nanorobot anticancer drugs and flexible, foldable vinyl displays in the near future is not unfamiliar.

In this way, nanotechnology is transforming human society and economy, and at the center of this is nanochemistry, which creates nanomaterials.
This book contains the core of nanochemistry that modern people must know, from the basic theory of nanochemistry, such as the history of nano, observation of nanoparticles, synthesis and properties of nanomaterials, to application cases in various fields such as medicine, electronics, environment, and energy.
As a civic education, this is the most accurate guidebook that introduces nanochemistry, which is no longer the exclusive domain of experts.

The mass media, including news, talk about the achievements of nanoscience, nanotechnology, and nanochemistry every day.
The concept of nanotechnology is being used in everything from fuel made from waste vinyl to flexible displays, superior filters that remove bacteria and viruses, and solutions and vaccines for incurable diseases.
Even in the movie, inventions that only existed in the imagination, such as nanorobots and nanosuits, appear in realistic forms that seem to be reproducible to some extent.
The wonders of the smallest chemical world are hidden in the nano.

It is very difficult to gauge the position of nanochemistry and science and technology in our real lives, let alone to imagine it.
However, there has never been a book introducing cutting-edge technologies in chemistry, so now, as a chemist and nanochemistry researcher, I will carefully guide you through your first steps into the cutting-edge world of chemistry.
- From "Introduction" (page 7)

In active targeting, the nanorobots are not simply covered with thick, inert molecules to protect their exterior, but are also tagged with tracers that can find, attach, and enter only targeted cancer cells.
Our body's liver, kidneys, lungs, muscles, bones, and nerves are all made up of cells, but their functions and forms are completely different.
Likewise, cancers that arise in each organ and tissue have different functions and forms, and even need to become more diverse and unique to proliferate rapidly and evade the body's repair work.
Targets and tracers are not some incredibly complex and novel new molecule that makes you worry about whether it's safe to put them in the human body.
For example, folic acid, which is taken to maintain health and is especially recommended for pregnant women, is useful in tracking breast, kidney, cervical, and rectal cancers.
If you simply attach a few folic acid molecules to a nanorobot, or if you load it with a drug chemically attached to the folic acid and let it flow, it will automatically find the relevant tumor and begin treating it.
- From Chapter 5: Nanorobots: Healing Our Bodies (page 178)

Electricity is the purpose of generation, but regardless of its purpose, there are several simple phenomena that can be found in electricity.
If you rub a rubber balloon on your fur clothes or hair, electricity will accumulate on the surface of the balloon and lift your hair into the air.
'Static electricity', which means electricity that does not flow but stays still, or 'frictional electricity', which is a type of electrification in which static electricity is created on a surface through contact or friction.
(Omitted) A device that generates electricity using frictional electricity does not necessarily need to be huge.
Rather, using large equipment like a conventional power plant to create contact and friction requires very precise and sophisticated devices, and it may be difficult to generate static electricity in the desired manner.
It is advantageous to have a large number of very small and simple frictional electricity generating elements lined up in parallel.
The small size and arrangement of materials are maximized in the form of nano-sized materials arranged and stacked.
The smallest power plant and technology that utilizes the phenomenon of electrons is called a 'nanogenerator'. The phenomenon itself is simple.
Friction creates static electricity, and we create electricity by dissipating static electricity.
Understanding the current state, potential, and future prospects of development technology and how it can be used effectively helps us understand what the nano world is changing.
- From Chapter 7: Nanotechnology: Protecting the Environment and Creating Energy (pp. 258-261)

2.
The superpowers of nanoparticles that only manifest in the smallest of worlds
- Iridescent gold particles, powerful magnetic iron oxide particles...
The surprising and special properties of nanomaterials

Nanochemistry is unique in many ways.
The reason nanochemistry is receiving attention as a cutting-edge science today is not just because materials in the nanometer range are small.
Scientists who have observed and studied the nano world have discovered that nanomaterials have unique properties that are different from those of micrometer or millimeter-sized materials.
For example, while regular gold appears yellow to our eyes, gold nanoparticles appear in a variety of colors, including red, green, blue, and purple, depending on their size.
Iron oxide nanoparticles have a property that is much stronger than general paramagnetism (the property of being magnetized in the same direction as a magnetic field), namely superparamagnetism.
Just as Alice went through the looking glass and entered a strange world, a wonderful world unfolds when materials cross the nano boundary.
These characteristics of nanoparticles are the fundamental force that enables nanochemistry to create advanced materials and innovate technologies.

Nanochemistry is also special in that it lies at the final frontier of chemistry.
Chemistry is the study of understanding and controlling changes in matter.
Science has shown that even the basic building blocks of matter, the elements, can be broken down into smaller particles such as electrons, protons, and neutrons, but this is not the subject of chemistry.
In other words, nanochemistry studies the final realm where chemistry can remain chemistry.
At the boundary between physics and chemistry, nanochemistry, which observes and synthesizes the smallest substances that chemistry can reach, is even more interesting because it explores the essence of the discipline of chemistry.

Why haven't we heard the term "microchemistry" used to describe the micro world? While the micro is advantageous for observation, analysis, and application, it lacks the uniqueness of the nano.
The nano world is special in itself.
Gold, a shiny yellow metal, transforms into a variety of vibrant colors, including red, blue, and purple, when it enters the nano world.
Even iron filings that stick to a magnet when brought near it begin to exhibit a slightly different property called superparamagnetic at the nanoscale.
Even the stinging and creepy needles can be injected painlessly by simply attaching them to the skin using a technology called nanoneedle.
Silver, once used as jewelry, is now a medicine that kills germs, and cadmium, once poisonous, is now a light source that emits bright fluorescent light.
It would not be an exaggeration to say that the scene in the movie "The Wizard of Oz" starring Judy Garland, where the door opens and the scene changes from black and white to color, illustrates the moment when chemistry enters the nano world.
- From Chapter 1, Opening the Door to the Nano World (pp. 34-35)

Nanochemistry may be the final frontier that chemistry can reach as chemistry.
While understanding and utilizing a single atom is meaningful enough, it can also be distinguished as bordering on the vast realm of quantum mechanics or particle physics, not chemistry, in that it deals with matter, relationships, and changes.
Just as houses and buildings are often associated with the crystallization of other disciplines, such as materials science and architecture, rather than the product of chemistry, when we think about matter, the world of individual atoms beyond molecules is the boundary between chemistry and other disciplines.
The chemistry that takes place in the nanoworld will be different from the classical image of chemistry we have in the laboratory, where we mix colorful liquids, sometimes bubbling, sometimes popping, sometimes spitting out smoke or boiling over.
Although some stories may seem a bit unfamiliar and difficult, it is fascinating in itself to learn about and experience what is happening at the very frontier of chemistry.
- From Chapter 1: Opening the Door to the Nano World (pp. 36-37)

3.
We've been waiting for a chemistry book like this!
- A smart chemistry journey with the best chemistry communicators.

Professor Hong-Je Jang of the Department of Chemistry at Kwangwoon University, who wrote this book, is a dedicated researcher who has published over 70 nanochemistry papers in renowned international academic journals such as ACS Nano and Angewandte Chemie, and is also a leading chemical communicator who is leading the way in popularizing chemistry.
He has been active in various fields, such as writing textbooks, giving public lectures, and appearing in scientific content, to spread the charm of chemistry, which many people consider difficult and complex.
Recently, he has been running the YouTube channel 'Chemical Harak' and as a one-man creator in charge of content planning, production, and editing, he is closely communicating with those interested in science.
His channel, which has become famous by word of mouth for its witty and clear content, is filled with comments from subscribers such as, "I didn't know chemistry could be this fun," and "This is the best chemistry content you can find on YouTube."
This time, he wants to share the fun and value of chemistry through his major, nanochemistry.
As you follow the exciting and entertaining guide and take in the panoramic view of nanochemistry from the top of the Chemistry Tower, you will soon find yourself wanting to explore the world of chemistry, which once seemed so difficult.