Christopher Grieco
Department of Chemistry and Biochemistry
Assistant Professor

Research Areas: Physical

Office: 261 Chemistry Building

Lab: 251, 207 Chemistry Building

Address: 179 Chemistry Building
Auburn, AL 36849

Phone: (334) 844-6973



The Pennsylvania State University, Ph.D. Chemistry
2012 - 2017
Rochester Institute of Technology, B.S. Chemistry, B.S. Applied Mathematics
2008 - 2012

Professional Employment
Assistant Professor, Auburn University
2021 - present
Postdoctoral Scholar, The Ohio State University
2017 - 2021

Honors and Awards
Gerhard Closs Postdoctoral Award, Inter-American Photochemical Society
2019 PHYS Division Young Investigator Award, American Chemical Society
2016-17 Continuing Graduate Award, Penn State Dept. of Chemistry
Dan H. Waugh Memorial Teaching Award, Penn State Dept. of Chemistry
Undergraduate Senior Achievement Award in Chemistry, American Institute of Chemists

Research and Teaching Interests

Research Interests:

The Grieco lab aims to develop a fundamental understanding of mixed ionic-electronic conduction in conjugated polymers for ion-charge signal transduction and energy storage. Inspired by bioelectronic and solar energy storage/conversion applications, our research lies at the interface between Physical Chemistry, Materials Chemistry, and Engineering. We develop and apply in situ time-resolved optical spectroscopic methods for probing the elementary processes that occur during mixed ionic-electronic conduction in polymers.

Research in the Grieco lab focuses on characterizing the electronic structure and environment of charge carriers in mixed ionic-electronic conductors as they undergo electrochemical changes in working devices. Our strategy is to develop new spectroscopic approaches to study the complex interplay of ionic and electronic transport, and their dependence on the dynamic nanoscale environment and morphology of the polymers. Through spectroscopy, we aim to learn how to design the chemical structure and morphology of polymers for maximizing their performance in electrochemical devices.

Our spectroscopy instruments include:

  • Ultrafast broadband visible/near-infrared pump-probe spectroscopy (~500 - 2400 nm)
  • Visible/near-infrared absorbance spectrometer (~400 - 2500 nm, ≥5 ms spectral acquisition rate)
  • FTIR spectrometer with rapid acquisition capability


Keywords: Time-resolved spectroscopy, physical/analytical chemistry, polymers, energy, materials, bioelectronics, spectro-electrochemistry.


Courses Taught:

  • CHEM 7380: Molecular Spectroscopy (3x)
  • CHEM 4980: Undergraduate Research in Chemistry (2x)
  • CHEM 4070: Physical Chemistry I (1x)
  • CHEM 3160: Survey of Physical Chemistry (1x)

Selected Publications

  1. Umar, AR.; Dorris, A.L.; Grieco, C. Photoexcited Polaron Relaxation as a Structurally Sensitive Reporter of Charge Trapping in a Conducting PolymerAdv. Funct. Mater. 2024, 2407181.
  2. Dorris, A.L.; Umar, AR; Grieco, C. Ultrabroadband Near-Infrared Transient Absorption Spectrometer with Simultaneous 900–2350 nm DetectionAppl. Spectrosc. 2024, DOI: 10.1177/00037028241247072
  3. Umar, AR; Dorris, A.L.; Kotadiya, N.M.; Giebink, N.C.; Collier, G.S.; Grieco, C. Probing Polaron Environment in a Doped Polymer via the Photoinduced Stark EffectJ. Phys. Chem. C. 2023, 127, 20, 9498–9508. DOI: 10.1021/acs.jpcc.3c01364


Selected publications prior to Auburn University

  1. Grieco, C.; Kohl, F.R.; Kohler, B. Ultrafast Radical Photogeneration Pathways in EumelaninPhotochem. Photobiol. 2023, 99, 680-692. DOI: 10.1111/php.13731
  2. Grieco, C.; Kohl, F.R.; Hanes, A.T.; Kohler, B. Probing the heterogeneous structure of eumelanin using ultrafast vibrational fingerprinting Nat. Comm. 2020, 11, 4569. DOI: 10.1038/s41467-020-18393-w
  3. Grieco, C.; Hanes, A.; Blancafort, L.; Kohler, B. Effects of Intra- and Intermolecular Hydrogen Bonding on O−H Bond Photodissociation Pathways of a Catechol DerivativeJ. Phys. Chem. A. 2019, 123, 5356-5366. DOI: 10.1021/acs.jpca.9b04573
  4. Grieco, C.; Kennehan, E.R.; Rimshaw, A.; Anthony, J.E.; Asbury, J.B. Direct Observation of Correlated Triplet Pair Dynamics during Singlet Fission Using Ultrafast Mid-IR Spectroscopy J. Phys. Chem. C2018,  122, 2012-2022. DOI: 10.1021/acs.jpcc.7b11228
  5. Grieco, C.; Kennehan, E.R.; Rimshaw, A.; Anthony, J.E.; Asbury, J.B. Harnessing Molecular Vibrations to Probe Triplet Dynamics During Singlet FissionJ. Phys. Chem. Lett.  2017, 8, 5700-5706. DOI: 10.1021/acs.jpclett.7b02434
  6. Grieco, C.; Doucette, G.S.; Pensack, R.D.; Payne, M.M.; Rimshaw, A.; Scholes, G.D.; Anthony, J.E.; Asbury, J.B. Dynamic Exchange during Triplet Transport in Nanocrystalline TIPS-Pentacene Films J. Am. Chem. Soc.  2016, 138, 16069-16080. DOI: 10.1021/jacs.6b10010
  7. Grieco, C.; Aplan, M.P.; Rimshaw, A.; Lee, Y.; Le, T.P.; Zhang, W.; Wang, Q.; Milner, S.T.; Gomez, E.D.; Asbury, J.B.  Molecular Rectification in Conjugated Block Copolymer Photovoltaics J. Phys. Chem. C.  2016, 120, 6978–6988. DOI: 10.1021/acs.jpcc.6b00103

Last updated: 06/20/2024