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Movers And Shakers

C&EN Talks With Perkin Medalist John Warner

The green chemistry pioneer talks about social movements, education, and how he tries to shake up the process of invention

by Bethany Halford
November 17, 2014 | A version of this story appeared in Volume 92, Issue 46

Credit: Melinda Furse
Warner poses with his patents.
Photo of John C. Warner standing next to his many patents.
Credit: Melinda Furse
Warner poses with his patents.

Flanked by “Star Trek” mugs and a mauve tie, the 2014 SCI Perkin Medal sits in a place of honor in John C. Warner’s office. Warner, president and chief technology officer at the Warner Babcock Institute for Green Chemistry (WBI), took home the medal back in September. “I feel that it’s really an award for the whole field of green chemistry,” Warner says of the prize.

Awarded annually since 1906 by the American Section of the Society of Chemical Industry (SCI), the medal is often described as the chemical industry’s highest honor. That a green chemistry guru such as Warner would garner the medal clearly demonstrates the strides the field has made within the chemical industry. Not so long ago, Warner says, being a chemist simply meant working with toxic and dangerous stuff. “It took a very long time for people to say, ‘If we’re the ones capable of understanding molecular structure, why not add safety to our criteria?’ ” Warner notes.

In 1998, Warner and chemist Paul T. Anastas outlined the 12 principles of green chemistry in their textbook “Green Chemistry: Theory and Practice.” The philosophy was to encourage chemists to think about toxicology and environmental impact when designing new molecules and materials.

“When Paul Anastas and I started talking about green chemistry, it was all about chemistry. This is a science of how to invent safe materials. The idea was to attract the only people not at the table of the sustainability discussion—the chemists. The people inventing the new materials weren’t part of the conversation.”

Since then, Warner says, a strange culture has grown around green chemistry that’s unlike any other aspect of science. For example, he wonders why people talk about lowering the barrier to adopting green chemistry.

“When people invented polymers, do you think there were groups getting together asking, ‘How can we reduce the barrier to adoption of polymers?’ ” Warner asks. “No. If you build a better mousetrap, people will beat a path to your door. My philosophy is that green chemistry should be the same thing. If you build a better product, with superior performance and superior cost that, oh by the way, is more environmentally benign, it’s a no-brainer.

“But because of the perceived moral and ethical component of green chemistry, people say, ‘Maybe society should be using it even if it isn’t superior in performance or even if it is too expensive,’ ” Warner continues. “That’s where I say, ‘No, no, no. We chemists are better than that. We can get back in the lab and make it work better.’ ”

Warner says he frequently encounters people who think green chemistry is a social movement. That’s a myth he’d like to dispel. “Chemists didn’t go into chemistry because they were attracted to social movements, so the more it sounds like, and smells like, and feels like a social movement, the more chemists will back off,” Warner notes.

Warner praises the chemical industry for being early adopters of green chemistry. “Industry saw this as a way of being competitive,” he says. Universities, on the other hand, he takes issue with, noting that they’ve been slow to add green chemistry to their curricula.

Not having any training in green chemistry, Warner says, can be a problem when chemistry students go looking for jobs. “We don’t train students to get jobs in industry. We train students to publish papers,” he points out. “The tool set that is required to publish papers isn’t the same tool set that creates solutions for society.

“We teach people to worship precedent, but we don’t really value intuition,” he continues. To break scientists at WBI of this tendency, Warner likes to get his people working in the lab for a couple of weeks before they dive into the literature of the problem they are tackling. “I think that if you load yourself up with bias up front, you rob yourself of innovative processes. Because we start with our own intuitive approach of what’s going on, it enables us to approach things from a different perspective.”

Warner also expresses a certain disdain for keeping scientists working primarily within their disciplines. “If you have smart people who have a track record of solving problems, and you put them in an area where they’ve never done anything, after two or three months the questions that they ask are going to be the most awesome questions that you’ve ever imagined,” he says.

It’s tough to argue with his success. In just seven years, WBI has come up with green syntheses of two drug candidates now in clinical trials, a formaldehyde-free wood composite that WBI and others are currently trying to scale up, an environmentally friendly asphalt additive sold under the name Delta S, and a nontoxic hair color restorer sold under the name Hairprint. “I think this approach makes us very different,” Warner says. “We’re not smarter or better, but we certainly are different, and if we do things differently, we’ll get different results.”  



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