People

Director
	Paul Anastas, Ph.D. Director Teresa and H. John Heinz III Professor in the Practice of Chemistry for the Environment Paul T. Anastas is the Teresa and H. John Heinz III Professor in the Practice of Chemistry for the Environment. He has appointments in the School of the Environment, Department of Chemistry, and Department of Chemical Engineering. In addition, Prof. Anastas serves as the Director of the Center for Green Chemistry and Green Engineering at Yale.

Deputy Director
	Julie B. Zimmerman, Ph.D. Deputy Director *Senior Associate Dean of Academic Affairs* Professor in School of Engineering & Applied Science Professor in School of the Environment

Senior Staff
	Hanno Erythropel, Ph.D. Research Scientist - Hanno supports the oversight of research at the Center. He is passionate about building interdisciplinary bridges between chemistry, chemical engineering, material science, toxicology, and other disciplines to create green chemistry solutions using a systems thinking framework. His work has focused on valorizing different types of biomass, developing highly functional yet biodegradable and non-toxic materials such as plasticizers, and better understanding the composition and content of tobacco products. - Outside of the lab, Hanno enjoys exploring new places and countries and learning about local language and culture. Hanno is also an avid bike-rider.
	Predrag Petrovic, Ph.D. Associate Research Scientist - Predrag obtained a Ph.D. degree in organometallic chemistry by applying experimental and theoretical approaches to studying non-covalent interactions in organometallic complexes. In 2017 he joined the Center where his main research focus is setting a foundation for the methodology that will help safer chemical design that complies with the 12 Principles of Green Chemistry by using various computational tools (DFT, ab initio, etc.). - In his free time, Predrag loves reading sci-fi and fantasy books, riding a bike, taking long walks and (not-so-long) hikes, and very occasionally playing video games .
	Timothy Sandrey *Program Coordinator* - Tim provides administrative and operational support to the Center for Green Chemistry and Green Engineering, with a focus on the Yale-UNIDO project (Global GreenChem Innovation and Network Programme). Tim brings a background in communications and media studies and previously served as the Associate Communications Officer at the Yale Institute for Biospheric Studies. - In his free time, Tim enjoys spending time with family, exploring the outdoors, and playing guitar.
	Margaret Kerr, Ph.D. Visiting Professor, Director of Education Green Chemistry for Climate and Sustainability Certificate Program - Margaret has been researching and implementing green chemistry practices into a variety of educational arenas nationally and internationally. She has developed curriculum to explore the interconnected nature of the UN Sustainable Development Goals and the Green Chemistry principles using a systems thinking approach. She received two Fulbright grants (2007, 2023) to promote green chemistry in education and industry in Thailand. - Outside of the lab Margaret is a nationally-ranked competitive fencer in her age group, an avid flower gardener and dog walking enthusiast.
	Lars Ratjen, Ph.D. Associate Research Scientist - Lars likes changing places and learning things from nature and people. Before coming to Yale in 2022 he spent almost 9 years in Chile, working for Fraunhofer, at the interface of academia and industry. He is focused on interdisciplinary projects, ranging from chemistry over engineering to environmental health. He is also involved in helping other countries in sustainable development in the Yale-UNIDO initiative, which he is very passionate about. - Out of the lab Lars enjoys watersports, cooking and trying new food, reading pretty much anything and he is an occasional artisan. There are (almost) no animals he does not like.
	Brooke DeRosa Financial Administrator -Brooke provides financial, budgetary, and operational support to the Center for Green Chemistry and Green Engineering, with a focus on the Yale-UNIDO project (Global GreenChem Innovation and Network Programme). Her prior experience includes public accounting audits of manufacturing and service sector clients, and management of financial reporting and development of budgets in the hospitality industry. -Her interests include sourdough bread baking, outdoor activities like tennis and gardening, and volunteer work with individuals experiencing food insecurity.

Students
	Momoko Ishii Ph.D. Student at the Department of Chemical & Environmental Engineering and School of the Environment - Momoko is interested in carbon dioxide as a building block in flow synthesis.
	Tobias Muellers, (he/him) Ph.D. Student - Tobias is interested in the intersection of toxicology and chemistry, as well as advancing safer chemical design. Within the Center, he utilizes computational chemistry and statistical techniques to enable the rational design of safer chemicals. Prior to Yale, he dabbled in analytical and synthetic chemistry and worked as an environmental chemist conducting chemical hazard assessments. - Tobias loves spending time in nature for just about any reason (e.g., hiking, biking, running, canoeing), cooking and baking, and reading.
	Greg Sieczkiewicz, Ph.D., J.D. (he/his) Ph.D. Student at the Yale School of the Environment - Grey is a seasoned biotechnologist with over two decades of experience as a researcher, patent attorney, entrepreneur, and inventor. He seeks to drive sustainable innovation with commercial applicability and global impact. His research uses systems theory to integrate data from a molecular/biochemical level to an organismal/ecological scale. - Grey enjoys running, cycling, hiking, and spending time with his partner, four children, and German short-haired pointer. Always an optimist, he loves a challenge.
	Dylan Judd, (he/him/his) Ph.D. Student at the Yale School of the Environment -Dylan is interested in promoting sustainable advances at every stage of materials science, ranging from the utilization of flow chemistry in synthesis efforts to the equitable implementation and associated impacts of climate-centered technologies. Dylan received both his B.A. in Chemistry and Environmental Studies and his M.A. in Chemistry from Wesleyan University while conducting research on plasmon-mediated nanoparticle production and reconfiguration. Dylan joined the Center for Green Chemistry & Green Engineering at Yale in 2023 with the hope that he can use his interdisciplinary perspective to bring novel insights to the variety of research questions with which the Center is concerned. -Outside of the lab, Dylan loves to read, do crossword puzzles, and play sports, such as baseball and volleyball. You may also find him listening to all types of music on his turntable or over his headphones.
	Andrew Champlin, (he/him/his) Ph.D. Student at the Yale Department of Chemistry - Andrew is interested in applying the tools of synthetic organic chemistry to promote and develop green chemistry practices into industrial technologies used to combat climate change. Prior to joining the Center for Green Chemistry & Green Engineering at Yale in 2024, Andrew gained experience as a synthetic organic chemist in academic labs which he aims to use in a career dedicated to green chemistry and sustainability. - Outside the lab, Andrew enjoys reading, playing video games, hiking, and cooking.
	Andreas Backhaus, (he/him/his) *Ph.D. Candidate in Chemical and Environmental Engineering* - Andreas joined the Zimmerman lab as a graduate student at the Center for Green Chemistry & Green Engineering at Yale in 2019. He develops flow chemistry and multiplexed synthesis approaches for sustainable and scalable nanomanufacturing and the accelerated parameter space exploration for nanomaterial syntheses. Andreas worked in industrial chemical process development before, obtaining a master’s degree in Environmental Process Engineering and a master’s degree in General Management from RWTH Aachen University. - Outside of the lab, Andreas competes in breaking (breakdancing).
	Yan Du, (she/her/hers) Ph.D. Candidate in Chemical and Environmental Engineering - Yan is interested in the water-energy nexus, especially water-economic data analysis and modeling. Her research focuses on evaluating the water impacts of various renewable energy technologies.

Research Staff
	Ho Yin TSE, Ph.D. (He/His) Postdoctoral Associate -Leo’s research focuses primarily on the sustainable photonic functional materials development, with a particular emphasis on the fabrication of new lignin-based photo-responsive nanoparticles and their fundamental photo-physics studies. During his Ph.D. training, he also involved in a numerous of professional consultation projects, including biotechnology assisted food-waste upcycling, energy and elements recovery from wastewater treatment processes and urban biorefinery engineering, etc. Currently, he is further developing new bio-based photonic materials and carbon sequestration processes at the Center. -Outside of the lab, Leo enjoys driving, watching movies and documentaries on science & philosophy discussion.