Klaas Wynne
Chair of Chemical Physics
University of Glasgow
School of Chemistry
Joseph Black Building
University Avenue
Glasgow, G12 8QQ
UK
office: A4.11b
e: klaas.wynne glasgow.ac.uk
skype: klaas.wynne
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Map from Hillhead to JB building
Map to my office in Joseph Black
Prof Klaas Wynne
Chair of chemical physics, School of Chemistry, University of Glasgow since 2010. FRSC, FInstP, FRSE, and recipient of the 2018 Chemical Dynamics Award of the RSC. Associate Editor of the Journal of the American Chemical Society (JACS) 2017-2020. MSci (Amsterdam) 1987; PhD (Amsterdam) 1990; Postdoctoral fellow (University of Pennsylvania, Dept. of Chemistry) 1991-1996; Lecturer to Professor (University of Strathclyde) 1996-2010; Chair of Chemical Physics (University of Glasgow) 2010-present.
Contributions to research – Ultrafast
- My group pioneered the use of time-resolved terahertz spectroscopy to the study of molecular systems by studying dipole solvation (PRL 79, 3078 (1997), 77 cits. and CPL 274, 365 (1997), 116 cits.).
- The unique opportunities presented by being able to measure the entire waveform of terahertz pulses was leveraged to study causality (OptLett 24, 25 (1999), 99 cits., PRL 84, 1431 (2000), 94 cits.) and to demonstrate the futility of faster-than-light communication (OptComm 209, 85 (2002), 48 cits.).
- I am responsible for the transformative idea of evanescent-wave femtosecond electron-bunch acceleration (APL 79, 2130 (2001), 70 cits.), which led to the first detection of terahertz-pulse emission through surface plasmons (PRL 98, 026803 (2007), 116 cits.).
- We were the first to study the terahertz dynamics of room-temperature ionic liquids using optical Kerr effect (OKE), leading to a landmark paper (JCP 119, 464 (2003), 250 cits.). With collaborators, we combined OKE, dielectric relaxation, and terahertz spectroscopy to discover mesoscopic structure in ionic liquids (JACS 131, 11140 (2009), 234 cits.).
- My group exploited molecular symmetry to isolate physical effects in OKE, dielectric, and terahertz spectroscopy (JCP 128, 161102 (2008), 93 cits.). This allowed us to reveal structural and dynamical changes associated with the polyamorphic liquid-liquid transition in nano-pools of water (PCCP 14, 8067 (2012), 27 cits.). It was put to ultimate use in liquid noble gasses, which were shown to exhibit coherent phonon-like dynamics previously only associated with strongly-interacting liquids and solids (JCP 131, 201101 (2009), 30 cits.) and in ionic liquids (JACS 139, 7160 (2018), 9 cits.).
- We were the first to explore detailed low-frequency Raman spectra of proteins using OKE (BiophysJ 85, 1903 (2003), 120 cits.) and were able to show changes in intra- and inter-molecular hydrogen bonding patterns during a helix-to-coil transition in a peptide (JACS 129, 3168 (2007) 72 cits.).
- My group were able to show that proteins have underdamped delocalised terahertz-frequency modes and, crucially, that these modes are coupled to protein-ligand binding (Nat. Commun. 5, 3999 (2014) 98 cits.). Recent work from the group on solvated DNA demonstrated the presence of delocalised phonons associated with transcription processes fundamentally altering our understanding of biochemical reactions (Nat. Commun., 7, 11799 (2016) 24 cits.).
Contributions to research – Ultraslow
Three years ago, I decided to develop a new research direction involving the ultraslow (milliseconds to hours) dynamics associated with phase transitions in liquids using microscopy and spectroscopy.
- We were the first to use confocal fluorescence lifetime imaging to determine the order parameter of a polyamorphic liquid–liquid transition (JPCLett 6, 38 (2015) 17 cits.).
- Using a battery of micro-spectroscopy techniques, we were able to demonstrate that n-butanol undergoes a transition to an unusual metastable rippled-lamellar phase that frustrates crystallisation with wide implications to the understanding of supercooling and glass formation (Sci. Rep. 7, 42439 (2017), 5 cits.).
- In a recent publication (Nat. Chem. 10, 506 (2018), 3 cits.), we showed that laser-induced nucleation can be understood in terms of the harnessing of concentration fluctuations near a liquid–liquid critical point using optical tweezing.
(Google Scholar citation data Dec. 2018)
resume (pdf, 140kB)
KW's other interests include orienteering and mountain/hill running.