Siddharth Parameswaran Iyer

Latest publications

• Hydroxyl Radical-Initiated Oxidation of Isoprene Leads to a Cyclic Peroxyhemiacetal via 1,6-Hydrogen Shift Chemistry That Yields Secondary Organic Aerosol

  Rice, R. L., Riva, M., Mettke, P., Iyer, S., Gerber, S., Graf, S., Lopez-Hilfiker, F., Kamrath, M., Zhang, Z., Herrmann, H., Surratt, J. D. & Gold, A., 3 Feb 2026, In: Environmental Science and Technology. 60, 4, p. 3374-3383 10 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

• Ambient-Pressure Multischeme Chemical Ionization for Pesticide Detection: A MION-Orbitrap Mass Spectrometry Study

  Partovi, F., Mikkilä, J., Iyer, S., Mikkilä, J., Kontro, J., Ojanperä, S., Shcherbinin, A. & Rissanen, M., 3 Jun 2025, In: ACS Omega. 10, 21, p. 21324-21333 10 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

• Detailed Investigation of 2,3-Dimethyl-2-butene Ozonolysis-Derived Hydroxyl, Peroxy, and Alkoxy Radical Chemistry

  Frandsen, B. N., Franzon, L., Meder, M., Pasik, D., Ahongshangbam, E., Vinkvist, N., Myllys, N., Iyer, S., Rissanen, M. P., Ehn, M. & Kurtén, T. C., 19 Jun 2025, In: ACS Earth and Space Chemistry. 9, 6, p. 1322-1337 16 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

• Estimating aqueous solubility and hygroscopicity of amino acid particles with COSMOtherm

  Li, Z., Iyer, S. & Hyttinen, N., 11 Dec 2025, (E-pub ahead of print) In: Communications Chemistry. 9, 1, 25.

  Research output: Contribution to journal › Article › Scientific › peer-review

• Laboratory and field characterization of an atmospheric pressure transverse chemical ionization ion-molecule reaction region

  Rund, P., Lee, B. H., Iyer, S., Novak, G. A., Vallow, J. T. & Thornton, J. A., 24 Nov 2025, In: Atmospheric Measurement Techniques. 18, 22, p. 6979-6995 17 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

• Molecular dynamics-guided reaction discovery reveals endoperoxide-to-alkoxy radical isomerization as key branching point in α-pinene ozonolysis

  Yang, H., Raucci, U., Iyer, S., Hasan, G., Golin Almeida, T., Barua, S., Savolainen, A., Kangasluoma, J., Rissanen, M., Vehkamäki, H. & Kurtén, T., 14 Jan 2025, In: Nature Communications. 16, 1

  Research output: Contribution to journal › Article › Scientific › peer-review

• Monoterpene oxidation pathways initiated by acyl peroxy radical addition

  Pasik, D., Golin Almeida, T., Ahongshangbam, E., Iyer, S. & Myllys, N., 16 Apr 2025, In: Atmospheric Chemistry and Physics. 25, 7, p. 4313-4331 19 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

• Rapid unimolecular reactions of acyl peroxy radicals: extending the structure-activity relationships

  Franzon, L., Savolainen, A., Iyer, S., Rissanen, M. & Kurtén, T., 3 Jun 2025, In: Physical Chemistry Chemical Physics. 27, 23, p. 12198-12210 13 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

• Reactivity of Benzoylperoxy Radicals with Monoterpenes: One-Step Reaction to Form Low-Volatility Organic Compounds

  Pasik, D., Hyttinen, N., Iyer, S. & Myllys, N., 9 Dec 2025, In: Environmental Science and Technology. 59, 48, p. 26067-26080 14 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

• Selective Deuteration Reveals the Importance of Multiple Branching Pathways in α-Pinene Autoxidation

  Meder, M., Graeffe, F., Luo, Y., Luo, J., Iyer, S., Valiev, R., Cai, R., Rissanen, M., Kurtén, T., Varelas, J. G., Geiger, F. M., Thomson, R. J. & Ehn, M., 30 Apr 2025, In: Journal of the American Chemical Society. 147, 17, p. 14131-14138 8 p.

  Research output: Contribution to journal › Article › Scientific › peer-review