A Cold Take on Quantum Computers

Article written by Zack Savitsky on Science.org

Quantum materials always get talked about like futuristic technology, but the reality is that they are here and they are being used. Simulating molecular interactions for drug discovery, AI optimization, and advanced semi/super conductors are just a few areas where new materials are being utilized for quantum computing. One thing that each of these uses shares in common with one another is their temperature dependence. These tiny electronic chips will only show quantum material behavior at temperatures close to 0K, or absolute zero, a notoriously difficult temperature to reach.

The most common method of cooling in the lab past the 173K temperature of ice is liquid nitrogen, which reaches a temperature of 77K, which is nowhere near cold enough to eliminate the amount of thermal motion necessary for quantum materials to work effectively. Current quantum computers have begun utilizing liquid helium to achieve a temperature range of 4-0.22K, which is much closer to the ideal 0K. More specifically, Helium-3 is used, a rare isotope that contains 3 neutrons instead of the standard 2 that Helium-2 has. This creates the challenge of scarcity, where Helium-3 is very difficult to acquire. 

Helium-2 on its own is rare enough, only taking up 5ppm of the Earth's atmosphere, and Helium-3 is only 0.0001% of that amount, so natural methods of acquiring this gas are not feasible for the industrial scale. During the Cold War in 1955, the development of Hydrogen Bombs as an improvement to the Atomic Bombs led to the creation of Tritium, or Hydrogen-3. This unstable isotope of Hydrogen will slowly decay into Helium-3 through beta decay, where a neutron is converted into a proton, releasing an electron and an antineutrino

Cooling quantum computers with liquid Helium functions by using Helium-4 to cool down to 4K, which boils off, with Helium-3 then being introduced and compressed, which cools down the mixture even more. At this point, the mixture separates into two layers: helium-3 on top of a mixture of both. As some atoms of helium-3 leave the mixture, replacements diffuse down from the layer of pure Helium-3, resulting in heat being drawn from the environment. Boiled off Helium can be captured and reused, allowing the process to continue until temperatures near absolute zero are reached.

Possible solutions for the Helium-3 supply issue have been theorized, such as extracting it from the tritium made in certain heavy water nuclear power plants or harvesting it from the Moon, where solar wind does not get deflected like it does for Earth, resulting in a buildup on the surface. Other cooling options are available, but this method will be left behind if a better source of Helium-3 is not found, because the demand for quantum computers will only continue to rise.

https://www.science.org/content/article/helium-3-runs-scarce-researchers-seek-new-ways-chill-quantum-computers

Chemists Breaking Bad!: The Modern Model for Street Drugs

 How Cracking the Code of Party Drugs Dramatically Increased Synthetic Drug Development

Present day, as outlined by The New York Times, drug development is ever evolving. With information, academic and informal, being more available than ever before, it comes as no surprise that it is being used for some bad, such as street drug development. However, the bigger problem at hand is the recent discovery of how older drugs can be used as model systems for illicit drug synthesis, and how a surplus of information is being used by irresponsible chemists to harm society at an unprecedented rate. 

Since the 1980s, party drugs such as MDMA, made illegal in the U.S. in 1985, (Figure 1) have been synthesized and consumed for its stimulant and psychedelic effects (NIH).

Figure 1. Chemical structure of MDMA.

Where the problem begins is the discovery of the ease at which alternative drugs with similar effects could be synthesized, a prime example of this being methylone (Figure 2) and its easy addition of oxygen, more specifically a oxygen with 2 bonds to a carbon, known as a ketone.

Figure 2. Chemical structure of methylone.

Methylone was the first largely produced and consumed new-age drug of its class, synthetic cathinones, more commonly known as "bath salts" being legally sold in the U.S. in 2010, and was also the start of using templates for drug development due to the high amount of manipulations that can be made to get desired drug effects such as increasing or decreasing potency, addictiveness, and of course avoiding the law by dodging substance bans. For those more chemically inclined, it can be noted that the transformation to methylone can be done many ways. Commonly, a coupling reaction followed by the oxidation of an added alcohol to the desired ketone (while this information will be shared as its rather basic, most chemical reactions used to achieve the compounds in this blog will not be for obvious reasons). 

What exactly is a cathinone? It is a compound that follows the general structure of figure 3. More specifically, it contains a carbon ring (denoted by the the connecting points of the lines, and 3 additionally lines depicting double bonds that make it a benzene ring, the fancy chemical name, in blue), a oxygen atom (yellow), a carbon backbone highlighted in tan, as well as a nitrogen atom shown in green. To obtain the desired characteristics of cathinones, as mentioned earlier, the most relevant groups are the carbon ring, carbon backbone, and nitrogen atom. This is seen in methylone (Figure 2), where an additional ring was added to the carbon ring and a carbon atom was added to the nitrogen. 

Figure 3. Structure of a cathinone and its distinct characteristics.

Figure 4. Structure of dopamine.

The primary difficulty and concern of cathinones is their resemblance to dopamine (Figure 4). Due to this, the brain's ability to regulate dopamine is disrupted and causes a false euphoria that is addicting and dangerous. Due to the side effects of these drugs, high blood pressure, heart attack, and many more acute and chronic issues that result in death or disability can be caused. 

Further efforts result in the synthesis of MDPV (Figure 5) which was "too extreme" causing abnormally high amounts of psychosis, the synthesis of ethylone (Figure 6, a much simpler compound due to less abstract additions, and less extreme compound), NEP and eutylone(Figure 7 & 8, used as adulterants in other drugs), as well as NNDP throughout the early 2010s to present day.

Figure 5. Structure of MDPV.

Figure 6. Structure of ethylone.

Figure 7. Structure of NEP.

Figure 8. Structure of Eutylone.

Figure 9. Structure of NNDP.

Unfortunately, the progress does not stop with NNDP. In 2019 after the Chinese ban of fentanyl and its variants, the rediscovery of nitazenes (Figure 10) and their opioid properties become a mainstream interest among nefarious chemists. Similarly to cathinones, the three ends of nitazenes are the malleable sites used by chemists to alter drug properties.

Figure 10. Structure of nitazenes, as well as their areas of interest.

By the end of 2024 at least 22 nitazene molecules have been identified. The greatest concern with this class of drug is the cost of production and sale being extremely low, as well as the potency. As reported by NPS Discovery, some nitazenes are reported to be 90 times more potent then fentanyl. For reference, morphine, a commonly used drug in the medical world for pain management, is 100 times less potent than fentanyl. This means some nitazenes are 900 plus times more potent than industry standard pain medication!

Who is making these compounds? Historically, unregulated labs operated by a mix of trained chemists and informally trained individuals in China, India, as well as smaller illicit operations in Mexico are largely responsible. However, it is important to note that the ever changing nature of laws around the synthesis of these drugs has created a need for more diversity in location and scale of operation. 

This dire situation in the losing war against drugs begs a few questions to be asked. Should published research be more limited to avoid the public knowledge of drug synthesis techniques? How can one stop a problem so far beyond management on the street level? What awful drug will hit the streets next?

Sources:

https://www.nytimes.com/interactive/2026/04/08/health/illegal-labs-potent-drugs.html

https://nida.nih.gov/research-topics/mdma-ecstasy-molly

Weight Loss by Design: The Chemistry Behind Ozempic

Ozempic has become widely used beyond its original purpose of treating type 2 diabetes, gaining major attention for its strong effects on weight loss. Coverage emphasizes both its medical benefits and the growing controversy around its popularity, including side effects, high cost, limited supply, and debate over non-diabetic use.

At the physiological level, semaglutide works by mimicking the natural incretin hormone GLP-1. This hormone regulates blood glucose and appetite by stimulating insulin secretion when glucose levels are elevated, suppressing glucagon release, and slowing gastric emptying. These coordinated biochemical effects reduce blood sugar spikes and increase satiety.          

Figure 1. Molecular representation of Ozempic showing how the semaglutide structure is designed to mimic GLP-1 and interact with GLP-1 receptors through specific molecular shape and binding sites. The diagram highlights the importance of structure–function relationships in pharmaceutical chemistry, where small changes in molecular arrangement determine receptor activation, biological response, and drug stability in the  body.  

The function of Ozempic is fundamentally determined by molecular structure and intermolecular interactions. The active compound, semaglutide, is a synthetically modified peptide composed of amino acids arranged in a specific three-dimensional conformation. This structure is designed through pharmaceutical chemistry to closely resemble endogenous GLP-1 while improving stability.

From a chemical standpoint, the drug’s biological activity depends on molecular recognition, where semaglutide binds to the GLP-1 receptor through highly specific non-covalent interactions such as hydrogen bonding, ionic interactions, and hydrophobic effects. These weak forces determine binding affinity and receptor activation, meaning that even minor structural changes can significantly alter pharmacological activity.

A key chemical modification is the increase in metabolic stability. Natural GLP-1 is rapidly degraded by the enzyme dipeptidyl peptidase-4 (DPP-4), resulting in a very short half-life. Semaglutide is engineered with structural changes that reduce enzymatic recognition and slow degradation, extending its half-life to allow once-weekly dosing. This is an example of structure-based drug design, where molecular modifications are used to control reaction pathways in biological systems.

Media coverage of this medication often reflects a tension between scientific advancement and public concern. Reports highlight significant therapeutic benefits, but also emphasize risks, accessibility issues, and social debates about cosmetic versus medical use.

From a chemistry communication standpoint, the framing can influence perception. When discussion focuses only on side effects, it may reinforce chemophobic thinking, the assumption that synthetic molecules are inherently harmful or “unnatural.” However, when the mechanism is explained in chemical terms, it demonstrates that the drug is a precisely engineered molecule designed for a specific receptor target. This challenges chemophobia by showing that biological effects arise from predictable molecular interactions rather than vague notions of “chemicals being bad.”

This topic is well-suited for a chemistry-in-the-human-environment course because it connects molecular structure, enzymatic reactions, and receptor chemistry to a widely discussed modern pharmaceutical. It also demonstrates how chemical design directly impacts human physiology and how media framing can shape public understanding of chemical science.

https://www.novomedlink.com/diabetes/products/treatments/ozempic/about/mechanism-of-action.html 

https://amp.cnn.com/cnn/2023/10/05/health/weight-loss-drugs-serious-digestive-problems

How Funding Cuts Are Disrupting the Next Generation of Chemists

In a typical year, the path to a PhD in chemistry is demanding but predictable. Students in their senior year of undergrad apply in the fall, hear back in the winter, and commit by spring, often April 15th. Typically PhD offers, especially in stem, come with research funding, lab placements, stipends enough to live within the area, and a clear next step into research careers.

 With unstable federal research funding: Now is different.

Across the United States, chemistry graduate admissions have been thrown into uncertainty about their futures in academia. Students are being accepted and then waitlisted, others are receiving offers, only to have them rescinded weeks later and some aren't hearing back from all their schools until far after the April 15th commitment deadline, making decisions difficult. Some programs have even quietly reduced their incoming class sizes or have canceled admissions entirely.

Universities rely heavily on federal agencies to fund graduate education in the sciences and these funds don’t just pay for experiments but they support stipends, tuition, and the infrastructure that keeps labs running. Recently, however, funding has become uncertain due to cuts, delays, and policy changes which have left universities unsure of what resources they’ll actually have in the coming years. Faced with that uncertainty, many departments are making a difficult choice to prioritize current students over incoming ones. From an administrative standpoint, it’s a defensive move. From a student’s perspective, it’s destabilizing with the consequences being immediate and personal.

Students who once felt secure in their plans are now navigating a confusing landscape:

• Acceptance letters that don’t materialize into official offers

• Waitlists that replace earlier admissions decisions

• Deadlines that suddenly disappear

• Programs that reverse course after commitments have already been made

No matter the qualification of candidates, everyone is affected. In some cases, universities have rescinded offers because they can no longer guarantee funding for stipends which is an essential component of most PhD programs.

This results in a cycle defined not by competition alone, but by unpredictability forcing students to rethink their futures. While some students are considering taking unplanned gap years, others are abandoning graduate school entirely in favor of industry roles, even if those positions are limited to entry-level work without an advanced degree.

For many, the concern isn’t just this year but it’s what comes next. If fewer students are admitted now, the next admissions cycle could become even more competitive, as a backlog of applicants collides with a new graduating class. If every year there's more applicants and limited spots, the Chemistry PhD becomes a rarity and what was already a narrow pathway into academia is becoming narrower still.

Still, it's too early to know whether this is a short-term disruption or the beginning of a longer shift in how scientific training is funded and structured, what is clear is that the current moment is testing the resilience of both institutions and students. Professors are advising patience, students are weighing backup plans ,and the future of the academic pipeline remains uncertain.

https://cen.acs.org/careers/employment/Chemistry-majors-stress-over-futures/103/i9

Photo: https://cen.acs.org/careers/US-science-research-gutted-2025/103/web/2025/08

How Does a Spacecraft Come Back to Earth Without Burning Up?

Artemis II rocket

With Artemis II drawing more attention to the Orion spacecraft, I thought one of the most interesting questions was: How can a spacecraft return to Earth at such high speed without burning up? When Orion comes back from a mission around the Moon, NASA says it reenters Earth’s atmosphere at about 25,000 mph and faces temperatures of nearly 5,000°F. That is hot enough that protecting the astronauts is not just an engineering problem but also a chemistry and materials science problem.

The key idea is the heat shield, which for Orion is made primarily from a material called Avcoat. NASA explains that Avcoat is an ablative material. That means it is designed to slowly break down, char, and wear away in a controlled way during reentry, rather than simply trying to resist the heat forever. In other words, the spacecraft survives because part of the heat shield is intentionally sacrificed. As the material heats up, physical and chemical changes in the shield help carry heat away from the capsule rather than letting that heat pass directly inside.

 

Avcoat 

This is where the chemistry becomes really important. During reentry, the air in front of the spacecraft is compressed so intensely that it becomes extremely hot. The heat shield then undergoes thermal decomposition and ablation, meaning chemical bonds in the material break, gases are produced, and the outer layer chars and erodes. NASA describes this process as a controlled burn-off that transports heat away from Orion. So the shield is not just a passive barrier; it actively uses chemistry to protect the spacecraft.

What makes this even more interesting is that NASA learned from Artemis I that the chemistry and gas flow inside the ablative material have to be managed very carefully. In its 2024 update, NASA said gases generated inside Orion’s Avcoat during reentry did not vent and dissipate as expected in some areas, which caused pressure to build up and led to cracking and loss of some charred material. That shows how small details in material chemistry can become mission-critical when a spacecraft is returning from the Moon.

I think this topic is so interesting because people usually imagine space travel as mostly rockets and engines, but the return to Earth depends just as much on chemical reactions, heat transfer, decomposition, and material design. A spacecraft survives reentry not by avoiding extreme heat, but by using smart chemistry to manage it. 

Source: https://www.nasa.gov/humans-in-space/after-15-years-1000-tests-orions-heat-shield-ready-to-take-the-heat/

Your Houseplant Is Doing More Than Just Sitting There

 

Your Houseplant Is Doing More Than Just Sitting There

Plants have some pretty surprising ways to fend off infections. We often think

of them as just sitting there, but this article dives into how they activate defenses

all over when trouble strikes in one area. This process is called systemic acquired

resistance, and it helps prepare other parts of the plant before they get hit.

The research comes from a study by Dan Smith, focusing on the chemicals

involved. Salicylic acid was the main player everyone knew about, but it takes

about 24 hours to ramp up after an infection. So, scientists figured there must

be something quicker to kick things into gear. It turns out that jasmonate moves

in quickly, within hours, and then salicylic acid follows up to support it. Together,

they create a layered defense system that seems to work well.

Since plants don’t have immune cells or blood to send signals, everything

relies on chemicals moving from cell to cell. Each cell picks up on these signals

and activates defense genes. It sounds complex, but the researchers used

luciferase from bioluminescent bugs to make the plants light up when the

immune response is activated. This allows them to observe the whole process in real-time.

This research is really important for farming because pests and diseases can

destroy up to 40 percent of crops each year. With a growing population, we need

plants that can better withstand these threats. Understanding these natural defenses

could lead to a reduced need for pesticides, which would be a win for public health

and the environment.

The article also challenges the idea of chemophobia, where people think all chemicals

are harmful. In this case, these plant hormones are just part of their survival strategy,

and they might even help address global food issues. Chemistry plays a beneficial role

in biology, its not something to be afraid of.

For a class like CHEM 100, this topic fits perfectly. It connects molecules to real-life

applications, like how they regulate plant systems and promote sustainable farming.

Some sections might feel a bit technical, but overall, it clearly illustrates the connection.

 

Source: “Moment of Science: New study sheds light on plant immune 

responses” by Dan Smith (Mar. 17, 2026)

https://www.13abc.com/2026/03/17/moment-science-new-study-sheds-

light-plant-immune-responses/ 

A single amino acid could determine if your medicines work

Do you know people who swear by Tylenol as a pain reliever and other people who say it doesn’t work for them at all? One of the unsolved mysteries in chemistry is a clear explanation for why medicines work differently in different people. The chemistry of drug development can seem straightforward on the surface. There are receptors on the surface of human cells that respond to signals from things like hormones and drugs and determine how the body reacts. Drug makers create medicines that target these receptors in an effort to treat illness. Although drug makers design drugs that bind tightly to certain receptors, the drugs are not always as effective as expected, and the effectiveness can vary among patients. Research reported in a recent ScienceNewsToday article (based on an ACS Medicinal Chemistry Letters paper) provides a possible explanation for why. 

A team of scientists in Japan studied the histamine H1 receptor, which is involved in allergic reactions, inflammation, and other functions in the body, and how two isomers of a compound called doxepin bind to this receptor. Researchers found that the z isomer bound to the receptor with much higher affinity than the e isomer and that a single amino acid, Thr1123.37, was responsible for the difference. They then created a mutant receptor and studied how each isomer reacted with each receptor. In particular they measured the binding energy and the balance of two thermodynamic forces, enthalpy and entropy, in the binding process. Enthalpy describes how strongly molecules stick together and entropy describes how much freedom they have to move. The researchers discovered that small differences in compounds, such as the difference in a single amino acid, can change the balance of the enthalpy and entropy forces in the bond which can dramatically impact the tightness of the bond.

Differences in binding energy for two different isomers of doxepin

This research may help explain why some drugs work better than others, even when they look very similar. Understanding the impact of the entropy and enthalpy balance on binding can help drug makers design drugs that are even more selective for the target. This article has the potential to reduce chemophobia because it reminds readers that chemistry is essential to maintaining human health. It shows scientists using their knowledge to help people in their everyday lives.

Primary Source:

ScienceNewsToday, Editors of. “This Tiny Molecular Sentinel inside Your Cells Decides How Your Body Heals.” Science News Today, 15 Feb. 2026, www.sciencenewstoday.org/this-tiny-molecular-sentinel-inside-your-cells-decides-how-your-body-heals. 

Secondary Source:

Kaneko, Hiroto, et al. “Enthalpy–entropy trade-off underlies geometric isomer selectivity in histamine H1 receptor–doxepin interaction.” ACS Medicinal Chemistry Letters, vol. 17, no. 2, 27 Jan. 2026, pp. 490–494, https://doi.org/10.1021/acsmedchemlett.5c00696.