1. Clark, C.; Pawłowski, F.; Brook, D. J.R.; Grieco, C. Ultrafast Excited State Dynamics of a Verdazyl Diradical System. Photochem. 2024. 4, 404-416.
  2. Umar, AR.; Dorris, A.L.; Grieco, C. Photoexcited Polaron Relaxation as a Structurally Sensitive Reporter of Charge Trapping in a Conducting Polymer. Adv. Funct. Mater. 2024, 2407181.
  3. Dorris, A.L.; Umar, AR; Grieco, C. Ultrabroadband Near-Infrared Transient Absorption Spectrometer with Simultaneous 900–2350 nm Detection. Appl. Spectrosc. 2024, 78, 1043-1050.
  4. 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 Effect. J. Phys. Chem. C. 2023, 127, 20, 9498–9508.

Prior to Auburn University

Melanin Photochemistry

  1. Grieco, C.; Kohl, F.R.; Kohler, B. Ultrafast Radical Photogeneration Pathways in Eumelanin. Photochem. Photobiol. 2022. 99, 680-692.
  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.
  3. Wu, S.; Kim, E.; Chen, C.; Li, J.; VanArsdale, E.; Grieco, C.; Kohler, B.; Bentley, W.E.; Shi, X.; Payne, G.F. Catechol-Based Molecular Memory Film for Redox Linked Bioelectronics. Adv. Electron. Mater. 2020. 2000452.
  4. *Kohl, F.R.; *Grieco, C.; Kohler, B. Ultrafast spectral hole burning reveals the distinct chromophores in eumelanin and their common photoresponse. Chem Sci. 2020. 11, 1248-1259.
  5. Grieco, C.; Hanes, A.; Blancafort, L.; Kohler, B. Effects of Intra- and Intermolecular Hydrogen Bonding on O−H Bond Photodissociation Pathways of a Catechol Derivative. J. Phys. Chem. A. 2019. 123, 5356-5366.
  6. Grieco, C.; Empey, J.M.; Kohl, F.R.; Kohler, B. Probing eumelanin photoprotection using a catechol:quinone heterodimer model system. Faraday Discuss. 2019. 216, 520-537.
  7. Grieco, C.; Kohl, F.; Zhang, Y.; Natarajan, S.; Blancafort, L.; Kohler, B. Intermolecular Hydrogen Bonding Modulates O-H Photodissociation in Molecular Aggregates of a Catechol Derivative. Photochem. Photobiol. 2019. 95, 163-175.

2D IR Spectroscopy

  1. Hanes, A.T.;  Grieco, C.; Lalisse, R.F.; Hadad, C.M.; Kohler, B. Vibrational relaxation by methylated xanthines in solution: Insights from 2D IR spectroscopy and calculations. J. Chem. Phys. 2023. 158, 044302.

Singlet Fission

  1. Pensack, R.D.; Purdum, G.E.; Mazza, S.M.; Grieco, C.; Asbury, J.B.; Anthony, J.E.; Loo, Y.; Scholes, G.D. Excited-State Dynamics of 5,14- vs 6,13-Bis(trialkylsilylethynyl)-Substituted Pentacenes: Implications for Singlet Fission. J. Phys. Chem. C. 2022. 126, 9784-9793.
  2. Munson, K.T.; Jianing, G.; Grieco, C.; Doucette, G.S.; Anthony, J.E.; Asbury, J.B. Ultrafast Triplet Pair Separation and Triplet Trapping Following Singlet Fission in Amorphous Pentacene Films. J. Phys. Chem. C. 2020. 124, 23567-23578.
  3. Grieco, C.; Doucette, G.S.; Munson, K.T.; Swartzfager, J.R.; Munro, J.M.; Anthony, J.E.; Dabo, I.; Asbury, J.B. Vibrational Probe of the Origin of Singlet Exciton Fission in TIPS-Pentacene Solutions. J. Chem. Phys. 2019. 151, 154701.
  4. Pensack, R.D.; Tilley, A.J.; Grieco, C.; Purdum, G.E.; Ostroumov, E.E.; Granger, D.B.; Oblinsky, D.G.; Dean, J.C.; Doucette, G.S.; Asbury, J.B.; Loo, Y.; Seferos, D.S.; Anthony, J.E.; Scholes, G.D. Striking the right balance of intermolecular coupling for high-efficiency singlet fission. Chem. Sci.  2018.  9, 6240-6259.
  5. 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. C.  2018.  122, 2012-2022.
  6. Grieco, C.; Kennehan, E.R.; Rimshaw, A.; Anthony, J.E.; Asbury, J.B. Harnessing Molecular Vibrations to Probe Triplet Dynamics During Singlet Fission. J. Phys. Chem. Lett.  2017.  8, 5700-5706.
  7. Grieco, C.*; Doucette, G.S.*; Munro, J.; Lee, Y.; Rimshaw, A.; Anthony, J.E.; Gomez, E.D.; Dabo, I.; Asbury, J.B. Triplet Transfer Mediates Triplet Pair Separation during Singlet Fission in 6,13-Bis(triisopropylsilylethynyl) -Pentacene. Adv. Func. Mater.  2017.  1703929.
  8. Pensack, R.D.; Grieco, C.; Purdum, G.E.; Mazza, S.M.; Tilley, A.J.; Ostroumov, E.E.; Seferos, D.S.; Loo, Y.; Asbury, J.B.; Anthony, J.E.; Scholes, G.D. Solution-processable, crystalline material for quantitative singlet fission. Materials Horizons.  2017.  4, 915-923.
  9. Pensack, R.D.; Ostroumov, E.E.; Tilley, A.J.; Mazza, S.; Grieco, C.; Thorley, K.J.; Asbury, J.B.; Seferos, D.S.; Anthony, J.E.; Scholes, G.D. Observation of Two Triplet-Pair Intermediates in Singlet Exciton Fission. J. Phys. Chem. Lett.  2017.  7, 2370-2375.
  10. 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. JACS.  2016.  138, 16069-16080.

Semiconducting Polymers, Organic Solar Cell Materials

  1. Aplan, M.P.; Grieco, C.; Lee, Y.; Munro, J.M.; Lee, W.; Gray, J.L.; Seibers, Z.D.; Kuei, B.; Litofsky, J.H.; Kilbey II, S.M.; Wang, Q.; Dabo, I.; Asbury, J.B.; Gomez, E.D. Conjugated Block Copolymers as Model Systems to Examine Mechanisms of Charge Generation in Donor–Acceptor Materials. Adv. Func. Mater. 2019. 29, 1804858.
  2. Aplan, M.P.; Munro, J.M.; Lee, Y.; Brigeman, A.N.; Grieco, C.; Wang, Q.; Giebink, N.C.; Dabo, I.; Asbury, J.B.; Gomez, E.D. Revealing the Importance of Energetic and Entropic Contributions to the Driving Force for Charge Photogeneration. ACS Appl. Mater. Interfaces. 2018.  10, 39933-39941.
  3. Kennehan, E.R.; Grieco, C; Rimshaw, A.; Foster, K.; Doucette, G.; Asbury, J.B. Using molecular vibrations to probe exciton delocalization in films of perylene diimides with ultrafast mid-IR spectroscopy. Phys. Chem. Chem. Phys.  2017.  19, 24829-24839.
  4. 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.
  5. Smith, B.H.; Clark, M.B.; Kuang, H.; Grieco, C.; Larsen, A.V.; Zhu, C.; Wang, C.; Hexemer, A.; Asbury, J.B.; Janik, M.J.; Gomez, E.D. Controlling Polymorphism in Poly(3-Hexylthiophene) through Addition of Ferrocene for Enhanced Charge Mobilities in Thin-Film Transistors.  Adv. Func. Mater. 2015.  25, 542-551.

Inorganic Materials for Solar Energy Conversion and Solid-State Lighting

  1. Empey, J.M.; Grieco, C.; Pettinger, N.W., Kohler, B. Ultrafast Electron Injection and Recombination Dynamics of Coumarin 343-Sensitized Cerium Oxide Nanoparticles. J. Phys. Chem. C. 2021. 125, 14827-14835.
  2. Kennehan, E.R.; Munson, K.T.; Grieco, C.; Doucette, G.S.; Marshall, A.R.; Beard, M.C.; Asbury, J.B. Exciton-Phonon Coupling and Carrier Relaxation in PbS Quantum Dots – the case of carboxylate ligands. J. Phys. Chem. C. 2021, 125, 22622-22629.
  3. Kennehan, E.R.; Munson, K.T.; Grieco, C.; Doucette, G.S.; Marshall, A.R.; Beard, M.C.; Asbury, J.B. Influence of Ligand Structure on Excited State Surface Chemistry of Lead Sulfide Quantum Dots. J. Am. Chem. Soc. 2021. 143, 34, 13824-13834.
  4. Kennehan, E.R.; Doucette, G.S.; Marshall, A.R.; Grieco, C.; Munson, K.T.; Beard, M.C.; Asbury, J.B. Electron–Phonon Coupling and Resonant Relaxation from 1D and 1P States in PbS Quantum Dots.  ACS Nano.  2018.  12, 6263-6272.
  5. Grieco, C.; Hirsekorn, K.F.; Heitsch, A.T.; Thomas, A.C.; McAdon, M.H.; Vanchura, B.A.; Romanelli, M.M.; Brehm, L.L.; Leugers, A.; Sokolov, A.N.; Asbury, J.B. Mechanisms of Energy Transfer and Enhanced Stability of Carbidonitride Phosphors for Solid State Lighting.  ACS Appl. Mater. Interfaces.  2017.  9, 12547-12555.
  6. Munson, K.T.; Grieco, C.; Kennehan, E.R.; Stewart, R.J.; Asbury, J.B. Time-Resolved Infrared Spectroscopy Directly Probes Free and Trapped Carriers in Organo-Halide Perovskites.  ACS Energy Lett.  2017.  2, 651-658.
  7. Stewart, R.J.; Grieco, C.; Larsen, A.V.; Doucette, G.S.; Asbury, J.B. Molecular Origins of Defects in Organo-Halide Perovskites and Their Influence of Charge Carrier Dynamics.  J. Phys. Chem. C.  2016.  120, 12392-12402.
  8. Stewart, R.J.; Grieco, C.; Larsen, A.V.; Maier, J.J.; Asbury, J.B. Approaching Bulk Carrier Dynamics in Organo-Halide Perovskite Nanocrystalline Films by Surface Passivation.  J. Phys. Chem. Lett.  2016.  7, 1148-1153.

Spectroscopy and Instrumentation

  1. Grieco, C. Time-resolved optical spectroscopy: A versatile, complementary tool for advancing cutting-edge materials technologies. MRS Bulletin. 2019. 44, 519-520.
  2. *Rimshaw, A.; *Grieco, C.; Asbury, J.B. High Sensitivity Nanosecond Mid-Infrared Transient Absorption Spectrometer Enabling Low Excitation Density Measurements of Electronic Materials.  Appl. Spec.  2016.  70, 1726-1732.
  3. *Rimshaw, A.; *Grieco, C.; Asbury, J.B. Note: Using fast digitizer acquisition and flexible resolution to enhance noise cancellation for high performance nanosecond transient absorbance spectroscopy.  Rev. Sci. Instr.  2015.  86, 066107.