FEB 21, 2016 8:53 AM PST

‘Nanoreactor' works like a virtual chemistry set

In 1952, a famous experiment mixed together chemicals that were present early in Earth’s history, then approximately replicated the environmental conditions on the planet at that time. The goal was to see if biologically relevant organic molecules would form spontaneously.

That work, the Urey-Miller experiment, produced more than 20 molecules that are important to life, but a team of chemists thinks it can do one step better.
 

The nanoreactor works something like a virtual chemistry set. Simply enter the structure of some target chemicals into the computer model, set the environmental conditions-such as temperature or pressure-and let it run.


The group has built a computer model that can not only determine all the possible products of the Urey-Miller experiment, but also detail all the possible chemical reactions that lead to their formation.

The nanoreactor, as they call the model, could help scientists discover chemical reactions and mechanisms that improve the efficiency of fuel combustion or batteries, or reveal opportunities for new drugs.
 

Just ‘let it run’


The nanoreactor, which is described in a recent issue of Nature Chemistry, works something like a virtual chemistry set. Simply enter the structure of some target chemicals into the computer model, set the environmental conditions—such as temperature or pressure—and let it run.

Then, algorithms begin to solve the quantum mechanical problems for each electron in the molecules as they interact—where are they likely to move from chemical to chemical, and what mechanisms must occur for those movements to take place? Each step is recorded along the way.

“You can just hit a button and it will tell you all the reactions that are important,” says senior author Todd Martinez, the professor of chemistry at Stanford University.

“It uses a hybrid approach that incorporates physics and machine learning to discover all the possible ways that your chemicals might react, and that might include reactions or mechanisms we’ve never seen before.”

Traditionally, producing this type of information involves sitting down with a pencil and paper and sketching electron movements, which limits the work to sets of a few atoms because of the sheer complexity and number of possible outcomes. Running on a desktop computer, the nanoreactor can simulate 100 to 200 atoms at a time, and produce results in a couple of hours.
 

Mysterious combustion


The nanoreactor could reveal reactions and mechanism that have tremendous applications in refining important chemical processes that we rely on every day. Consider, for instance, combustion reaction that powers gas-fueled automobiles.

“Combustion involves many hundreds of reactions, and we don’t even know all that’s occurring. This is a way to discover those using theory,” Martinez says.

“If you can know all the reactions, then you can identify which are actually key to sustaining combustion, and which lead to detrimental soot. And then you could maybe figure out how to stop soot formation, or to shut down other undesirable reaction pathways.”

Martinez expects the nanoreactor to reveal opportunities for developing catalysts that improve the efficiency of known reactions, particularly in applications such as fuel cells or batteries. Similarly, the model could provide a better understanding of the biochemical reactions critical in human health and disease, leading the way to new drug development.

Coauthors contributed from Stanford and Advanced Micro Devices. The group plans to refine the nanoreactor, with an ultimate goal of sharing it with other scientists as an open source platform.

Source: Stanford University

This article was originally published on futurity.org.

About the Author
  • Futurity features the latest discoveries by scientists at top research universities in the US, UK, Canada, Europe, Asia, and Australia. The nonprofit site, which launched in 2009, is supported solely by its university partners (listed below) in an effort to share research news directly with the public.
You May Also Like
FEB 01, 2021
Chemistry & Physics
Presence of plasma inhibits ultra-relativistic energies in solar storms
FEB 01, 2021
Presence of plasma inhibits ultra-relativistic energies in solar storms
A study published in the journal Science Advances reports new measurements from NASA's Van Allen Probes spacecraft. ...
MAR 04, 2021
Chemistry & Physics
The magic vibrational powers of frog lungs
MAR 04, 2021
The magic vibrational powers of frog lungs
Ever tried picking someone up at a loud, crowded bar? It’s not easy – not only may they not hear your fabulo ...
MAR 07, 2021
Cell & Molecular Biology
Why Are Egg Cells So Large?
MAR 07, 2021
Why Are Egg Cells So Large?
If you've ever seen a video of a sperm cell fertilizing an egg cell, you've probably noticed the huge size difference. T ...
MAR 22, 2021
Chemistry & Physics
What's all this about a "massless" battery?
MAR 22, 2021
What's all this about a "massless" battery?
Could a massless battery be possible? How could a device without mass store energy? If it were possible, what would that ...
MAR 29, 2021
Chemistry & Physics
Converting rubber tires into graphene...to put into cement?
MAR 29, 2021
Converting rubber tires into graphene...to put into cement?
New efforts to make more eco-friendly concrete involve the addition of graphene, according to a study recently published ...
MAY 18, 2021
Chemistry & Physics
The more synergy the better, right?
MAY 18, 2021
The more synergy the better, right?
A new investigation led by Dr. Faruque Hasan, Kim Tompkins McDivitt and Phillip McDivitt from the Department of Chemical ...
Loading Comments...