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What is bipyridine used for?

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You can find bipyridine in many important science and industry uses. Chemists use bipyridine as a main ligand to make complexes with transition metals. This helps reactions happen in coordination chemistry and catalysis. Bipyridine derivatives have strong bioactivity, like fighting viruses and tumors. You also see these compounds in pyridine and its derivatives. They make up about 18% of approved N-heterocyclic drugs. Compounds such as 3-methylpyridine, 2,3-dichloropyridine, nicotinamide, and 3-cyanopyridine show how different and useful these derivatives are.

Key Takeaways

  • Bipyridine is important in chemistry. It helps make strong metal complexes. These complexes help reactions work better.

  • It is very useful in catalysis. It makes reactions happen faster and easier. This is helpful when changing carbon dioxide.

  • Bipyridine derivatives are important in medicine. They help make drugs that fight cancer and infections.

  • These compounds help green chemistry. They lower waste and use safer ways in chemical work.

  • Bipyridine is used to make sensors. These sensors find dangerous chemicals. This helps keep places safe.

  • In material science, bipyridine helps make light-emitting materials and solar cells. This helps save energy.

  • Nicotinamide is a bipyridine derivative. It helps metabolism and gives health benefits. It can protect skin and help memory.

  • Bipyridine is useful in many industries. It helps in medicine and farming. It helps new ideas and protects the environment.

Bipyridine in Catalysis

Coordination Chemistry

Metal Complex Formation

Bipyridine helps metals stick together to make strong complexes. It has two nitrogen atoms on different rings. These atoms grab onto a metal ion and hold it tight. This makes the complex very stable. Many transition-metal reactions use this effect. The table below lists some transition metals that work with bipyridine and what they do in catalysis:

Transition Metal

Application in Catalysis

Mn

CO2 reduction reaction

Co

CO2 reduction reaction

Ni

CO2 reduction reaction

Zn

CO2 reduction reaction

Cu

CO2 reduction reaction

Cd

CO2 reduction reaction

Bipyridine’s shape gives it special features for coordination. You can see these features in the table:

Feature

Description

Chelating Nature

Has two nitrogen atoms on different pyridine rings, so it can attach at more than one spot.

Stability

Makes stable chelate complexes with metal ions, which are stronger than single-point ligands.

Additional Interactions

Can also do hydrogen bonding and π-π stacking, which helps keep metal complexes stable.

Catalytic Activity

Bipyridine helps catalysts work better and last longer. For example, nickel complexes with bipyridine can turn carbon dioxide into carbon monoxide more easily. The table below shows how different nickel-bipyridine complexes work:

Nickel Complex

Substituent Groups

Effectiveness in Catalysis

Ni-1

4,4′-dichloro-2,2′-bipyridine

Studied for CO2 to CO reduction

Ni-2

4,4′-dibromo-2,2′-bipyridine

Studied for CO2 to CO reduction

Ni-3

4,4′-diphenyl-2,2′-bipyridine

Studied for CO2 to CO reduction

Catalysts with bipyridine units have higher turnover frequency (TOF) and turnover number (TON) than those with just one pyridine unit. This means reactions go faster and you can use the catalyst more times before it stops working.

Industrial Catalysis

Chemical Synthesis

Bipyridine is important in making chemicals. It helps make many useful things. In factories, bipyridine-based catalysts help build complex molecules. These reactions are used to make medicines, plastics, and other products. Bipyridine makes these processes work better and gives higher yields.

Green Chemistry

Bipyridine also helps with green chemistry. This means you make less waste and use safer ways to do reactions. For example:

  • Bipyridine can be used in mechanochemical synthesis. This method does not need a lot of solvent, so there is less waste.

  • Mechanochemical reactions with bipyridine and metal precursors are faster and work better than old ways.

  • These reactions save time and resources, so your work is more sustainable.

Tip: If you want to make your synthesis greener, try using bipyridine in mechanochemical reactions.

References for Further Reading

If you want to learn more about bipyridine in catalysis and coordination chemistry, you can check out these reviews:

Reference

Authors

Journal

Year

DOI

1

Kaes C., Katz A., Hosseini M. W.

Chem. Rev.

2000

10.1021/cr990376z

2

Constable E. C., Housecroft C. E.

Molecules

2019

10.3390/molecules24213951

3

Ward M. D., White C. M., Barigelletti F., Armaroli N., Calogero G., Flamigni L.

Coord. Chem. Rev.

1998

10.1016/S0010-8545(98)90071-6

4

Munegowda M. A., Manalac A., Weersink M., McFarland S. A., Lilge L.

Coord. Chem. Rev.

2022

10.1016/j.ccr.2022.214712

Bipyridine is used in many ways in catalysis. It helps reactions go faster, greener, and more efficiently.

Bipyridine in Material Science

Sensors and Detection

Chemical Sensing

Bipyridine can help make sensors for finding dangerous chemicals. For example, scientists made a bipyridine ligand that changes color when it touches sarin. Sarin is a very harmful nerve agent. The color change happens because the ligand’s shape changes. This stops it from sticking to iron. You can see the color change with your eyes. This helps first responders know if sarin is there. Bipyridine gives sensors both sensitivity and selectivity.

Bipyridine also helps find metal ions in water or other samples. One way uses 2,2′-bipyridine to find Fe2+ and Al3+ ions. This method works even if other things are in the sample. You can find very small amounts, like 6.99 nmol/L for Fe2+ and 5.5 nmol/L for Al3+. This makes bipyridine sensors good for checking the environment and safety.

Electrochemical Devices

Bipyridine is used in electrochemical devices to measure ions or chemicals. These devices need materials that react only with certain targets. Bipyridine’s structure lets you make sensors for many pH levels. You can use them in labs or in the field.

Photonic and Luminescent Materials

Light-Emitting Applications

Bipyridine is important for making materials that glow or give off light. You can find these materials in displays, lights, and glow-in-the-dark paints. Picking the right ligands, like bipyridine, helps make blue phosphorescent materials. Tetradentate ligands have four points to attach. They give better stability and control over how the material glows.

Feature

Benefit for Light-Emitting Materials

Ligand Selection

Controls electronic transitions

Tetradentate Ligands

Increases stability and reduces breakdown

Excited State Control

Improves emission energy and brightness

Fluorescent Probes

Bipyridine-based compounds can be used as fluorescent probes. These probes help you see or measure things that are hard to spot. Scientists use them in biology and chemistry labs. They track molecules or reactions. Bipyridine probes glow strongly and stay bright. This makes them good tools for research.

Solar Cells and Energy

Dye-Sensitized Cells

Bipyridine is important in solar cell technology. It is used in dye-sensitized solar cells (DSSCs). Bipyridine-based dyes catch sunlight and turn it into electricity. These dyes have special features that make solar cells work better.

Performance Metric

Why It Matters in DSSCs

Light-harvesting efficiency

Helps collect more sunlight

Molecular radii

Affects dye’s fit on the cell surface

Diffusion coefficient

Improves charge movement

Oxidation potential

Raises electron transfer efficiency

Emission quantum yield

Increases light emission

Reorganization energy

Lowers energy loss during charge transfer

Geometry and reactivity

Shapes how well the dye works in the cell

Energy Storage

Bipyridine can also be used in energy storage systems like batteries. Bipyrimidine, which is similar, stores two electrons per molecule. It works at a low reduction potential. This helps batteries hold more energy. New bipyridine-based electrolytes are very stable and work well in flow batteries. Polymeric colloids with bipyridine can hold a lot of charge. They keep working well after many cycles.

Note: New ways to make bipyridine materials have made things easier. These advances help solve old problems in material science and organic synthesis.

Bipyridine in Medicine and Bioactivity

Bipyridine derivatives are important in medicine. You can find them in many drugs. They help treat diseases and make people healthier. These compounds are used to make new drugs. They also help fight disease and drug resistance.

Pharmaceutical Uses

Drug Precursors

Bipyridine derivatives are often used to start making new drugs. They are called drug precursors because their structure is flexible. For example, 2,3ʹ-bipyridine derivatives can act as COX-II inhibitors. These drugs help with inflammation and fever. They cause fewer side effects like stomach or kidney problems. This makes them safer and better for patients.

Synthesis of Active Ingredients

Making bipyridine derivatives leads to many active drug ingredients. These ingredients have special effects. Some stop cancer cells from growing. Others block harmful enzymes. The table below shows some important compounds and what they do:

Compound

Activity

Effect

B9

Antitumor Activity

Causes cell cycle arrest in cancer cells

BPA-B9

Anticancer Efficacy

Works well in living systems, no side effects

15c

AChE Inhibition

IC50 = 1.99 μM

15c

GST Inhibition

IC50 = 2.07 μM

15e

Anticancer Activity

Stops cancer cell growth

B7

Antitumor Activity

Better than XS-060

These examples show how bipyridine derivatives help make new medicines.

Bioactive Bipyridine Derivatives

Antiviral and Antitumor Activity

Some bipyridine derivatives can fight viruses and tumors. They stop viruses from spreading. They also keep cancer cells from dividing. Scientists found that B9 and BPA-B9 can stop cancer cells from growing and make them die. B7 works better than some older drugs. New research shows that changing the structure can make these drugs stronger. Some new compounds attack the energy centers in cancer cells. This helps stop tumors from growing.

Study

Findings

Implications

Perkovic et al.

New derivatives stop many types of tumor cells

May lead to broad cancer treatments

Saban et al.

Different structures give different cancer-fighting actions

Shows the value of changing the molecule

Cheng et al.

Targeted compounds block tumor cell energy

Points to new ways to fight cancer

Antimicrobial and Antifungal Effects

Bipyridine derivatives can also fight bacteria and fungi. Recent studies show they work against tough germs like MRSA and Candida albicans. They kill bacteria and stop them from making biofilms. Biofilms make infections harder to treat. By breaking down biofilms, bipyridine derivatives give hope for treating hard-to-cure infections.

Tip: If you want to learn about new medicines, watch bipyridine derivatives. They could help solve big health problems in the future.

You can see that bipyridine and its derivatives are useful in medicine. Their special effects make them important for drug discovery and health.

Applications of Bipyridine Derivatives

3-Methylpyridine Uses

Organic Synthesis

3-methylpyridine is used in many chemical processes. It is important for making medicines. The pharmaceutical industry needs it to make drug ingredients. It is also used in agrochemicals to make herbicides, fungicides, and insecticides. These products help farmers protect crops and grow more food. 3-methylpyridine is also used to make dyes, resins, and rubber chemicals. Because it can do so many things, it is valuable in many industries.

Precursor for Substituted Pyridines

3-methylpyridine is a starting point for making other compounds. Chemists call these new products substituted pyridines. You can change 3-methylpyridine in different ways to get new derivatives. These new compounds are used for special jobs. For example, you can make new medicines, agrochemicals, or specialty chemicals. Changing 3-methylpyridine helps scientists and companies do more research and make new products.

  • Used in making medicines

  • Used to make agrochemicals

  • Helps create specialty chemicals

2,3-Dichloropyridine Uses

Agrochemical Production

2,3-dichloropyridine is used a lot in agrochemicals. It helps make pesticides, herbicides, and fungicides. Farmers use these products to keep crops safe and get better harvests. More people want crop protection, so 2,3-dichloropyridine is very important in farming. It is also used in chemical synthesis to make other useful compounds.

Pharmaceutical Intermediates

2,3-dichloropyridine is important for making medicines. It is used to make drugs that treat many health problems. It helps make antibiotics and antivirals. It is also used to make antimicrobial and anti-inflammatory agents. This compound helps scientists create new medicines.

  • Used as an intermediate to make medicines

  • Helps develop drugs for health problems

  • Important for making antimicrobial and anti-inflammatory agents

3-Cyanopyridine Uses

Pharmaceutical Synthesis

3-cyanopyridine is used to make new medicines. Chemists use it to build hybrids that block harmful proteins. Some hybrids stop EGFR and BRAFV600E, which are linked to cancer. 3-cyanopyridine can also be changed into nicotinamide, an important drug ingredient. This shows why 3-cyanopyridine is valuable for making medicines.

Synthetic Route

Description

3-picoline to 3-cyanopyridine

3-picoline is changed to 3-cyanopyridine, which can then become nicotinic acid, an important drug ingredient.

Building Block in Organic Chemistry

3-cyanopyridine is a building block in organic chemistry. It helps make pyridine and other compounds like pyridine carboxamides and substituted benzamides. These are often used in medicine. 3-cyanopyridine is also found in agrochemicals, dyes, and pigments. Its structure lets chemists add new groups or change its properties for different uses.

Application Area

Contribution

Pharmaceuticals

Used as an important step in making new medicines

Agrochemicals

Helps make new products to protect crops

Dyes and Pigments

Used to make many kinds of dyes and pigments

Organic Synthesis

Works as a useful building block for research

Tip: If you want to try new things in chemistry, work with bipyridine derivatives. They have many uses and can help you find new ideas in science and industry.

Nicotinamide and Biological Importance

Role in Metabolism

Nicotinamide is very important for your body’s metabolism. Your cells need it to make NAD+ and NADP+. These are molecules that help your cells work. Your body has different ways to make NAD+. One way uses nicotinamide and changes it into NMN. An enzyme called NAMPT helps with this step. After that, NMN turns into NAD+. This keeps the NAD+ level steady in your body. NAD+ gives your cells energy and helps with cell signals. If you do not have enough nicotinamide, your cells cannot do these jobs well.

NAD+ and NADP+ Synthesis

Your body needs NAD+ and NADP+ for many reactions. These molecules move electrons and help your cells stay healthy. NAD+ is needed for redox reactions. These reactions let your cells make energy. NADP+ helps your body build things and protects your cells from harm. Nicotinamide is a starting piece for making these molecules. This helps your cells work the right way.

Health and Nutrition

Nicotinamide is good for your health in many ways. You can take it as a supplement to help your body. Scientists have tested nicotinamide in studies. They found it helps your brain and protects your skin.

Supplementation

Taking nicotinamide supplements can help you. Studies show that taking it by mouth protects your skin from UV rays. It lowers the chance of getting some skin cancers. It also reduces actinic keratoses, which are early skin problems. A big study showed that nicotinamide lowers basal cell and squamous cell carcinomas.

  • Taking nicotinamide by mouth protects your skin from UV.

  • It lowers the risk of some skin cancers.

  • It helps stop actinic keratoses, which are early skin changes.

Deficiency Treatment

Doctors give nicotinamide to people who do not get enough. If you do not have enough, you can get sick. Studies show nicotinamide helps people with memory loss. The table below shows what some studies found:

Study Year

Findings

Sample Size

Notes

1996

NADH helped improve mental test scores in AD patients

17

Open-label trial, no controls

2004

Stopped memory loss and helped with talking in AD patients

12

Randomized double-blind trial

2017

High doses did not cause more side effects

15

Short study (24 weeks)

Ongoing

Studying effects on tau in AD

N/A

NEAT trial, ends February 2019

Note: Taking nicotinamide is safe and may help your brain and skin.

Industrial and Research Uses

Nicotinamide is used in factories and science labs. You can find it in skin creams and medicine. It helps your skin by making more collagen and stopping it from breaking down. It makes your skin barrier stronger by adding important fats and proteins. Studies show nicotinamide helps with aging skin and dark spots. It also helps wounds heal faster.

  • Nicotinamide helps your skin make more collagen.

  • It makes your skin barrier stronger.

  • It treats aging skin and dark spots.

  • It helps wounds heal quickly.

Nicotinamide is important for your body, your health, and for making products. It has many uses and is a valuable compound.

You can see bipyridine and its derivatives are important in many areas:

  • They make reactions faster and more selective in catalysis.

  • They help build strong materials for sensors, solar cells, and glowing things.

  • They are used to make key medicines.

Scientists are still finding new ways to use bipyridine:

Research Area

Description

Catalysis

Bipyridine-metal complexes make reactions work better and cleaner.

Drug Discovery

Bipyridine derivatives help find new treatments for cancer and infections.

Material Innovation

Bipyridine helps improve electronics, solar panels, and sensors.

Sustainable Synthesis

Bipyridine compounds can be made in safer and cheaper ways.

You can help shape the future by learning about these new ideas and using bipyridine chemistry in your projects.

FAQ

What is bipyridine?

Bipyridine is a compound with two pyridine rings. People use it in chemistry to help metals join together. It is important for making catalysts and new materials.

How does bipyridine help in catalysis?

Bipyridine acts as a ligand. It sticks to metal ions and makes reactions go faster. This helps you make new chemicals and cut down on waste.

Can bipyridine be used in medicine?

Yes, bipyridine derivatives are found in many medicines. They help fight infections, cancer, and swelling. Scientists use them to create new drugs.

Why is bipyridine important for solar cells?

Bipyridine-based dyes catch sunlight and turn it into electricity. These dyes help solar cells work better and make more energy.

Are bipyridine derivatives safe?

Most bipyridine derivatives are safe if you use them the right way. You must follow safety rules in labs and factories. Some can be harmful if you do not handle them carefully.

What are common bipyridine derivatives?

You often find 3-methylpyridine, 2,3-dichloropyridine, nicotinamide, and 3-cyanopyridine. Each one is used in medicine, farming, or industry.

How do you store bipyridine compounds?

Keep bipyridine compounds in a cool, dry place. Use closed containers to keep out water and dirt. Always read safety instructions before using them.

Can bipyridine help make greener chemistry?

Yes! Bipyridine lets you use less solvent and make less waste. You can make reactions safer and better for the planet with bipyridine-based catalysts.

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