Fullerene

Tiny bits of carbon can join together.

They can form many shapes. Some make round balls. These balls look like soccer balls.

Other bits make long tubes.

These tubes are very strong. You can find these shapes in soot. They are also in outer space. Scientists use them to study new things. They are very small and special.

Fullerenes are a family of tiny shapes made of carbon. Carbon is the same stuff found in diamonds and soot.

Most fullerenes look like hollow cages. One famous type is called buckminsterfullerene. It is also known as a buckyball. This shape looks just like a soccer ball. It is made of 60 carbon atoms. These atoms form 20 hexagons and 12 pentagons.

Some fullerenes are not round. They can look like long tubes. We call these carbon nanotubes.

These tubes are very strong. They can also carry electricity well. Scientists study them to make new technology.

Fullerenes are not just in labs. They can be found in soot and lightning. Scientists even found them in outer space.

A telescope saw them in a cloud of dust near a star. They are very far away. This shows that these tiny shapes have existed for a long time.

Fullerenes are a special family of carbon shapes. For a long time, people only knew about three forms of carbon. These were diamond, graphite, and messy carbon like soot.

Fullerenes changed that by adding many new shapes to the list. These molecules are made of carbon atoms connected in a mesh. This mesh can form hollow spheres or even long tubes.

They are important because they help us study new technology. Scientists use them in fields like electronics and materials science.

These tiny structures work by connecting carbon atoms into rings. Some fullerenes are shaped like round balls. The most famous one is called buckminsterfullerene, or a "buckyball."

It looks just like a soccer ball. It uses 20 hexagons and 12 pentagons to make its shape. Other fullerenes are shaped like cylinders. We call these carbon nanotubes or "buckytubes."

These tubes can be very long or very short. They are very strong and can carry electricity well.

People thought these shapes might exist long before they were found. In 1970, Eiji Osawa predicted they could exist. He saw that some molecules looked like parts of a football.

Another scientist named R. W. Henson made a model in 1970 too. However, the evidence was too weak back then. People were skeptical of the new idea. It was not officially recognized until 1999. In 1985, a team finally discovered them for real.

Harold Kroto and his team found them in sooty residue.

Many important facts come from this big discovery. The discovery team included Robert Curl and Richard Smalley. They won the Nobel Prize in Chemistry in 1996.

Fullerenes can be found in many places. They appear in soot and even in lightning strikes. In 1992, they were found in minerals in Russia.

Scientists even found them in outer space. In 2010, a telescope saw them near a star. That star is 6,500 light years away from Earth.

Fullerenes connect to many things we already know. The name buckminsterfullerene honors an architect named Buckminster Fuller. His geodesic domes look like these carbon cages.

You might also know carbon from a pencil or a diamond. Fullerenes are just a different way for those atoms to sit. Some scientists even think these "spaceballs" might have helped life start.

They are small, but they show us how big the universe is. They link the tiny world of atoms to the huge world of stars.

Fullerenes are a unique family of carbon allotropes. An allotrope is a different form of the same element. For a long time, scientists only knew about three forms of carbon. These were diamond, graphite, and amorphous carbon like soot.

Fullerenes changed this understanding by adding many new shapes to the list. These molecules consist of carbon atoms connected by single and double bonds. They form a closed or partially closed mesh of fused rings. These rings are made of five or six atoms.

This structure allows for many different shapes, including hollow spheres, ellipsoids, or tubes.

The way these molecules are built depends on the arrangement of their rings. The IUPAC defines fullerenes as polyhedral closed cages. These cages are made entirely of three-coordinate carbon atoms. This means each carbon atom is bonded to three others. The structure must have exactly 12 pentagonal faces. It also contains (n/2 - 10) hexagonal faces, where n is the number of atoms.

For example, the most famous member is C60. It is a truncated icosahedron. This shape uses 20 hexagons and 12 pentagons. The carbon atoms sit at the vertices of these polygons. The bonds follow the edges of the shapes. This specific arrangement ensures that no two pentagons share an edge.

Fullerenes can be categorized into two major families. The first family consists of closed buckyballs. These are the sphere-like molecules.

The second family includes cylindrical carbon nanotubes, also called buckytubes. These tubes are often only a few nanometers wide. However, they can reach lengths of several millimeters.

Some structures exist between these two classes. These are called carbon nanobuds. They are nanotubes capped by hemispherical meshes. There are also nested fullerenes called buckyons or carbon nano-onions. These consist of one closed fullerene inside another.

The history of fullerenes is a story of predictions and accidental discoveries. In 1965, scientists mentioned the icosahedral cage as a possible structure. In 1970, Eiji Osawa predicted their existence. He noticed a molecule called corannulene looked like a piece of a football. He hypothesized a full ball shape could exist. R. W. Henson also proposed the structure in 1970. However, the evidence was weak, so the scientific community was skeptical.

It was not officially acknowledged until 1999. In 1985, Harold Kroto and his team finally discovered them. They were working with James R. Heath, Sean O'Brien, Robert Curl, and Richard Smalley. They found the molecules in sooty residue created by vaporizing carbon in helium.

This discovery had a massive impact on science. Kroto, Curl, and Smalley won the 1996 Nobel Prize in Chemistry.

Fullerenes are found in many unexpected places. They appear in sooty flames and lightning discharges. In 1992, they were found in shungite minerals in Russia.

Scientists even found them in outer space. In 2010, NASA's Spitzer infrared telescope saw C60 and C70 in a dust cloud. This cloud is 6,500 light years away from Earth. In 2019, the Hubble Space Telescope detected ionized C60 in the space between stars. Some astronomers suggest these "spaceballs" might have provided seeds for life on Earth.

Carbon nanotubes have extraordinary physical properties. They possess high tensile strength and high electrical conductivity. They also have high heat conductivity and high ductility.

Because they are cylindrical and planar, they have relative chemical inactivity. This means their atoms are not easily displaced. Scientists have proposed many uses for these materials. In 2007, researchers worked on paper batteries using nanotubes. In the field of space technology, people suggest using carbon cables for a space elevator.

Fullerenes connect to many different scientific fields. They are studied in materials science, electronics, and nanotechnology. Chemists also study heterofullerenes. These are structures where some carbon atoms are replaced by other elements like boron, nitrogen, or oxygen.

This expands the entire class of fullerene compounds. The name "buckminsterfullerene" honors the architect Buckminster Fuller. His geodesic domes look similar to these carbon cages. By studying these molecules, we learn how carbon can organize itself in the universe.