Students

Tobias Muellers's picture 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's picture 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.

 

Andrew Champlin's picture 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's picture 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's picture 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.

Momoko Ishii's picture 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.

Dylan Judd's picture 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.