Chemistry in retrospect: Personal reflections on a polarizing story

eisenbergMany scientists will at some point come up against the question regarding what good their work might do for the world. For those working in applied and interdisciplinary areas, this is often easier to rationalize to the public than for those working on fundamental, basic research. In this week’s “Chemistry in retrospect,” Rich Eisenberg tells us the story behind PHIP as a case study for why answering fundamental questions in chemistry is so important to the development of the field.

 

The word “hype” has been used — and abused — when chemists are asked to explain what they do and why.  This extends beyond simple social conversations with friends and folks newly met who will invariably ask with a slightly glazed stare after we explain what we do, “What good will that be?” Even our introductions to papers and proposals promise social and economic good before the science is discussed. And yes, sometimes we do overstate the ultimate social, economic and technological benefits of our science when we are just doing basic research. The key word here is “basic” and it really addresses the key question that drives experimental science, “Why does this happen?”

I want to talk about a basic research story that commenced in my lab more than 30 years ago into which we were drawn by the question, “why?” Thanks to the current efforts of a former postdoc and collaborator, the answer will likely have significant practical applications in magnetic resonance imaging (MRI).  Despite its widespread use, MRI lacks sensitivity that requires use of large-magnet instruments and specialized contrast agents to achieve current results which are often less than optimal.  But let’s go back to the beginning and see how that simple question “why” drove us to where we are now.

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Introducing “Chemistry in retrospect”

ChemistryInRetrospectThere is a great deal of storytelling that comes along with chemistry. Take a look at any article from our ‘In Your Element’ series and you’ll notice the gentle reverence we give to discoveries and champions of the field. For better or worse, part of what makes a particular event memorable in chemical history is the mythos surrounding it: besides being an important compound, ferrocene comes with the twisting tales of its structural assignment and the back-and-forth between eminent scientists is recounted to students regularly, and we take note of the fact that the original report of C60 to Nature was written by Curl & co-workers in only a single day. These stories, and many like them, are the ones that make us proud to be chemists and excited to continue building these legacies.

However, there are plenty of stories that don’t make it into the broader canon for one reason or another. Every day in the lab we have experiences that build us as scientists and, as Beth Haas pointed out in her article on the autobiographical Lab Girl, there are stories of success, failure and everything in between that come together to form the full-fledged chemists that we are today. Moreover, I am a firm believer that there is value in sharing these stories and diverse points of view. As a young scientist, learning about the challenges that come up in research that you can’t learn about in a textbook or journal article can be the difference between thriving and burning out. Knowing that you aren’t the first to struggle with research in some fashion is empowering — particularly if it comes with some perspective on how to address the issue at hand.

It’s in this vein that I’m proud to introduce the first of several posts that will appear here on The Sceptical Chymist as part of an informal series called ‘Chemistry in retrospect’. In this series, I hope to collect stories of life in the profession that are less formal in tone but illustrate an aspect of the job or a particular area of research that might not be clear from just reading published reports. Some of these stories will be more anecdotal ‘around the watercooler’ tales of adventures in professional development, lab safety and more, while others will take a slightly more technical slant as they pull back the curtain on how some important work came to be. The inaugural  story is a little bit of both of these as Professor Richard Eisenberg from the University of Rochester recounts the story behind how his group came to develop parahydrogen-induced polarization NMR techniques as a case study in how curiosity can take fundamental research in new and unexpected directions. It serves as a reminder that sometimes you don’t get what you sought out, and a well-prepared mind can capitalize on that.

I intend to maintain this series as often as I have articles to post — if you have a story to share or would like to suggest someone to write one for us, send an email to nchem at nature.com and I’ll get in touch. In the meantime, I hope you enjoy this first entry.

–Marshall

 

Reactions: Bassam Shakhashiri

Professor Bassam Z. Shakhashiri is in the Department of Chemistry at the University of Wisconsin-Madison, and contributes to national science education policy and practice. He advocates communicating with the general public through engaging science demonstrations, the web, electronic and print media, radio, television, and — best of all — in person.

1. What made you want to be a chemist?

Curiosity! When I was growing up in my native Lebanon, my mother knitted a sweater for me. It was warm and comfortable, but what struck me the most was its bright yellow color. I was curious, and asked lots of questions. What makes it yellow? What is yellow? I was fascinated and started thinking about color in my surroundings. Trees have green leaves and some stay green year round, like the Cedars of Lebanon. The leaves of other trees change color and fall off in autumn, only to reappear, green, in the spring. I received lots of encouragement from my parents and teachers. Later, during my formal education in America, I began to understand more about color and my youthful curiosities were satisfied, but this led to further questions that directed my scholarly investigations. I chose chemistry to help me understand the beautiful complexity of our world.

2. If you weren’t a chemist and could do any other job, what would it be — and why?

Political and social activist. I am dedicated to public service and feel that it is important to both advance science and serve society — that is why I went to work in Washington D.C. in the mid-1980s. I was chief education officer at the National Science Foundation (NSF). I led the resurgence of NSF’s science and engineering education programs at all levels after the programs were essentially zeroed out early in the Reagan Administration. I am committed to cultivating creativity and to fostering connectivity among science, the arts and the humanities for the betterment of society. I engage in conversations about the two strongest forces in society: science and religion.

3. What are you working on now, and where do you hope it will lead?

My research work has expanded beyond developing new chemistry demonstrations for use in classrooms and in public venues to focusing on understanding more deeply how we learn and how we act on what we learn. Our first effort dealt with color, light, vision, and perception and resulted in Volume 5 in our book series (published by the UW Press). Systemically, we are pursuing hearing, touch, taste and smell in collaboration with neuroscientists and other experts. I am devoted to the Wisconsin Idea which is one of the earliest expressions of the obligation of a great university to serve all the people of the state and, by extension, all the people of the world. The goals of our newest program SCIENCE IN MOTION are: fostering community appreciation of science, cultivating creativity, exploring, learning, and sharing the joy of science among youth and adults alike.

4. Which historical figure would you most like to have dinner with — and why?

It is a toss-up between Plato and Abraham Lincoln. I would want to learn more about Being, knowledge, metaphor, belief, spirituality, and democracy. I would want to learn more about conviction, judgement, respect, public sentiment, war, and forgiveness.

5. When was the last time you did an experiment in the lab — and what was it?

I do experiments all the time, both inside the lab and outside the lab, in front of crowds and for small groups. In December of 2016, I held my 47th Annual ‘Once Upon a Christmas Cheery In the Lab of Shakhashiri’ program, a tradition inspired by the great British chemist Michael Faraday. During the live program, my special guests and I do experiments for an audience ranging in age from 5 to 85. I also encourage the audience and the TV viewers to do home experiments we post on my website, at scifun.org.

6. If exiled on a desert island, what one book and one music album would you take with you?

Plato’s The Republic. Beethoven’s 9th Symphony.

7. Which chemist would you like to see interviewed on Reactions — and why?

Roald Hoffmann, a great scientist and a gifted humanist.

Reactions: Jianjun Cheng

Jianjun Cheng is in the Department of Materials Science and Engineering, Chemistry, and Bioengineering at the University of Illinois at Urbana-Champaign, and works on synthetic polymeric biomaterials, self-healing polymers, nanomedicine for drug and gene delivery, and chemistry mediated in vivo targeting. Jianjun recently published a paper in Nature Chemistry entitled “Cooperative polymerization of α-helices induced by macromolecular architecture“.

1. What made you want to be a chemist?

I had very strong interest in making materials that can work and have cool functions. Since high school, I have also been fascinated by the versatility of organic chemistry. Choosing polymer chemistry and materials science as research directions is an obvious combination of these interests. I was very fortunate that I could build up my career based on my interests.

2. If you weren’t a chemist and could do any other job, what would it be — and why?

Probably some of kind of management work or as an entrepreneur, managing a large scale projects or many people to accomplish something big is challenging but would be very interesting. I often feel excited by important things that are not particularly easy to accomplish.

3. What are you working on now, and where do you hope it will lead?

I am working on an exciting but challenging project now to use small molecule sugar compounds to achieve in vivo cancer specific labeling and targeting. We have validated the concept and published our preliminary studies in Nature Chemical Biology in 2017. Developing this technology towards clinical application is something I hope to push forward in the next five years or so.

4. Which historical figure would you most like to have dinner with — and why?

Wallace Carothers, who invented nylon. He is one of the greatest polymer chemists ever and his work has changed the world.

5. When was the last time you did an experiment in the lab — and what was it?

About 7–8 years ago, trying to do ring-opening polymerization of N-carboxyanhydrides to make polypeptides.

6. If exiled on a desert island, what one book and one music album would you take with you?

Romance of the Three Kingdoms, a book full of imagination. The ancient Chinese novel contains tons of plots, many personal and military battles, over one thousand dramatic historical characters, and struggles and strategies of these three states to survive or to achieve dominance over a period of about 100 years. It is arguably the most widely read historical novel ever in China.

For music album, I particularly like the songs from Chinese rock stars Daolang and Wang Feng. Their songs have a ton of power, are very touching, and can go straight to your heart.

7. Which chemist would you like to see interviewed on Reactions — and why?

Prof. Haifeng Gao at the University of Notre Dame, a young, dynamic and highly respected polymer chemist. His “Chain-Growth Click Polymerization of AB2 Monomers for the Formation of Hyperbranched Polymers with Low Polydispersities in a One-Pot Process” work (Angew Chem 2015, 7631) is very elegant.

Reactions: Julia Kalow

Julia Kalow is in the Department of Chemistry at Northwestern University and works at the interface of organic synthesis and polymer science, developing mechanism-driven approaches to new reactions and materials that can be controlled by light.

1. What made you want to be a chemist?

I was initially attracted to the puzzle-solving aspect of my organic chemistry course, but it was my first experience in a research lab (in Jim Leighton’s group at Columbia) that made me want to be a chemist. The thrill of getting a reaction to work, or making a molecule that no one’s ever made before, was addictive.

2. If you weren’t a chemist and could do any other job, what would it be — and why?

I really enjoy writing (which is fortunate, since it’s a significant part of my current job), so whatever I would do would probably involve writing in some way. I also love reading fiction. That being said, I don’t think I’d actually want to be a fiction writer — it seems like a lonely profession that requires great self-discipline, and possibly involves even more rejection than being a scientist!

3. What are you working on now, and where do you hope it will lead?

There are two main directions in my group right now: one where we’re trying to develop new mechanisms for controlled chain-growth polymerization based on selective photoexcitation, and another program based on developing physical hydrogels that can be controlled (ideally in a reversible manner) by visible light. I hope both projects will lead to new reactions and new materials that are both useful and allow us to learn fundamental lessons about reactivity, polymer physics, and biology.

4. Which historical figure would you most like to have dinner with — and why?

Humphry Davy sounds fun.

5. When was the last time you did an experiment in the lab — and what was it?

I set up a couple Suzuki reactions last week to make authentic product standards for one of our projects, but have yet to purify them!

6. If exiled on a desert island, what one book and one music album would you take with you?

Not a book, but I’ve had a subscription to the New Yorker since college and have amassed a collection of unread back issues that, to my husband and movers’ dismay, I insist on taking with me every time I move. So, I should probably get on that.

7. Which chemist would you like to see interviewed on Reactions — and why?

I bet Erik Sorensen would have great answers!