New was born in Sydney in 1984. She represented Australia at the International Chemistry Olympiad in 2000 and 2001, winning bronze and gold medals respectively, and graduated from James Ruse Agricultural High School with a UAI of 100. She earned a bachelor's degree in chemistry at the University of Sydney in 2005, where she completed her master's degree in 2006 with Professor Trevor Hambley. During her graduate studies she worked on fluorescent tags to monitor the cellular uptake and metabolism of anti-tumor complexes. New completed her doctoral studies at Durham University working with David Parker, graduating in 2010. Her work looked at the cellular behaviour of lanthanide complexes.
New was made a lecturer in 2015 and a senior lecturer in 2016. In 2017 she received the ChemComm Emerging Investigator. She was appointed Associate Professor in 2018 and Professor in 2021.
↑New, Elizabeth J.; Parker, David (2009). "The mechanism of cell uptake for luminescent lanthanide optical probes: the role of macropinocytosis and the effect of enhanced membrane permeability on compartmentalisation". Organic & Biomolecular Chemistry. 7 (5): 851–5. doi:10.1039/B822145F. ISSN1477-0520. PMID19225664.
↑Kaur, Amandeep; Haghighatbin, Mohammad A.; Hogan, Conor F.; New, Elizabeth J. (2015). "A FRET-based ratiometric redox probe for detecting oxidative stress by confocal microscopy, FLIM and flow cytometry". Chemical Communications. 51 (52): 10510–10513. doi:10.1039/C5CC03394B. ISSN1359-7345. PMID26036917.
↑Kaur, Amandeep; Brigden, Kurt W. L.; Cashman, Timothy F.; Fraser, Stuart T.; New, Elizabeth J. (2015). "Mitochondrially targeted redox probe reveals the variations in oxidative capacity of the haematopoietic cells". Organic & Biomolecular Chemistry. 13 (24): 6686–6689. doi:10.1039/C5OB00928F. ISSN1477-0520. PMID26006184.