In PHOTO-EMULSION, we are strong believers that Visible Teaching should become more widespread. In Visible Teaching, we freely share our day-to-day experiences, experiments, and innovations with the wider community and there is a vibrant culture in answering one another’s questions [1]. This is in line with the spirit and values disseminated by the H2020 programme. As contribution to Visible Teaching, we video-recorded all the keynote lectures given during our first and 2nd consortium meetings (Oct 2018 and Oct 2019). Our goal is at the end of the project to create a portfolio of high level, online and free video courses on “emulsion polymerizations, photopolymerization and photochemistry”, which are core subjects of our scientific project. The courses are deposited on youtube server but unlisted [2]. In addition, all requested authorizations were obtained for the use of published figures shown in the videos.

We believe that this concept of “visible teaching” is an excellent message of open sharing of knowledge for our ESRs, but also for all learners in the world. We thank the 4 lecturers for their intellectual contributions, enjoy the courses.

1 Reisner, B. A.; Williams, B. S. Visible Teaching: Moving from a Solitary Practice to a Community Endeavor. J. Chem. Educ. 2010, 87, 252-253. DOI: 10.1201/ed800104t

2 Unlisted means that our video will not come up in search results. Only those who know the link can view it, and you can share the link with anyone, even those who do not have a YouTube account/username. This means that this video could still be seen by anyone, but only if they guess the link!

1/ Basic of Molecular Photochemistry (André M. Braun, Quantapplic)

Course synopsis: electronic excitation, electronically excited states, photophysical processes and examples of applications, photochemical processes, classification and examples of applications in preparative photochemistry.

Lecturer biography: André M. Braun retired in 2006 from his chair at the Department of Chemical and Process Engineering of the University of Karlsruhe (now Karlsruhe Institute of Technology), Germany. He received his chemistry diploma in 1964 and his Ph.D. in 1966 from the University of Basel, Switzerland. From 1967 to 1969, he was a postdoctoral fellow at the California Institute of Technology and at Yale University. From 1969 to 1977, he worked as a research chemist at the Central Research Department of J.R. Geigy AG, later Ciba-Geigy AG in Basel. In 1977, he joined the Institute of Physical Chemistry of the Ecole Polytechnique Fédérale de Lausanne (EPFL), Switzerland. After his habilitation in 1978, he led as a privatdocent a research group focused on industrial applications of photochemistry until 1992, when he was called to head the Hewlett-Packard sponsored “Lehrstuhl für Umweltmesstechnik” at the University of Karlsruhe. His research interests include mechanistic and preparative photochemistry, design and scaling of photochemical reactors for industrial applications, and photophysics and photochemistry applied to environmental analysis and pollutant degradation.

2/ Basics of Photochemical Engineering (André M. Braun, Quantapplic)

Course synopsis: Selection of reactor geometry, selection of radiation source, rate of absorbed photons, Incident photon flux density, exampes of application (photochlorinations, etc.)

Lecturer biography: see on the left side

3/ Thiol-ene Chemistry: from basics to applications and future trends (Robert Liska, University of Vienna, Austria)

Course synopsis: Typical UV-curable Formulations, Thiol-Ene Chemistry, Base or Nucleophilic catalyzed Thiol Ene Reaction, Radical mediated Thiol Ene Click Reaction, Thiol-Yne Click Chemistry, Storage Stability of Thiol Ene, useful examples of thiol-ene polymerization

Lecturer biography: Robert Liska was born in 1969 in Vienna, Austria. He received his M.Sc. degree in 1995 and Ph.D. degree in 1998 from the Vienna University of Technology. In 2006, he got his habilitation in the field of macromolecular chemistry at the Institute of Applied Synthetic Chemistry. He is the leader of the research group ”Polymer Chemistry and Technology” and his current research interests are in the field of photoinitiation, photopolymerization, 3D-printing, and biomedical polymers. He has co-authored 10 book chapters and published more than 140 papers in peer reviewed journals. Up to now more than 30 patent families have been filed. Since 2012 he is also the head of the Christian Doppler laboratory for digital and restorative dentistry and member of the Austrian Cluster for Tissue Regeneration. Since 2016 he is full professor for “Organic Technology” at the Institute of Applied Synthetic Chemistry of the TU Wien.

4/ Photoinitiators (Jacques Lalevée, Institut de Science des Matériaux de Mulhouse, France)

Course synopsis: commercially available photoinitiators, main photoinitiating systems, polymerization in aerated conditions, low intensity, near-UV, and visible light photoinitiators, better initiating efficiency, improving cure depth.

Lecturer biography:Prof. Jacques Lalevée received his Ph.D. degree in Materials Chemistry under the supervision of Prof. Jean Pierre Fouassier from Mulhouse in 2002. After approximately one-year of postdoctoral research with Prof. Gerd Kothe (Germany), he joined the “Ecole Nationale Supérieure de Chimie de Mulhouse (ENSCMu)” in September, 2004. He was promoted to full professor in September, 2009. Since 2011, Jacques has been a Professor at the “Institut Universitaire de France (IUF-Paris)”. His current research interests encompass free radical chemistry, the design of new (photo)polymerisation initiating systems and new polymers, as well as mechanistic elucidation in polymer chemistry.

5/ Miniemulsion Polymerization (Héloïse Thérien-Aubin, Max Planck Institute for Polymer Research, Germany)

Course synopsis: definitions, generalities about polymerization in dispersed systems, formation of miniemulsion, ultrasonication, droplet stabilization, Ostawald ripening

Lecturer biography: Héloïse Thérien-Aubin studied chemistry at the Université de Montréal in Canada. She received her Ph.D. studying the diffusion in polymer systems using NMR spectroscopy in the group of Prof. Julian Zhu. Subsequently, she became a postdoctoral fellow in the department of Materials Science and Engineering at Cornell University, developing on antifouling polymer brush coatings with Prof. Christopher K. Ober. Afterward, she joined the group of Prof. Eugenia Kumacheva at the University of Toronto and worked on the self-assembly of nanoparticles, and the preparation of nanostructured materials and functional soft matter. In 2016, she joined the Max Plack Institute  for Polymer Research (MPIP) as a group leader in the department of Prof. Katharina Landfester. Her research interests range from the conformation and dynamic of polymers in confined environments to the preparation of addressable nanocolloids.

Upcoming video presentation…
6/ Photochemistry: Primary Process Parameters (Prof. Dr. André M. Braun, Quantapplic)

Course synopsis: main parameters affecting photochemical processes, fundamentals of spectroscopy; power density of radiation sources; optical path and quantum yield; rate of photochemical reactions; singlet and triplet photochemical reactions.

Lecturer biography: See 1st and 2nd videos

Upcoming video presentation…
7/ Industrial radical photoinitiators, Dr. Ing. Jean-Luc Birbaum (

Course synopsis: most important radical photoinitiators ; light penetration ; through-cure versus surface cure ; bleaching photoinitiators ; LED curing ; photocleavage products ; migration of photoinitiators.

Lecturer biography: Dr. Ing. Jean-Luc Birbaum received his diploma of chemical engineering from the EPFL in 1980 and his PhD in 1985 from the same institution. In 1987, after a postdoctoral stay at the University of Kyoto, Japan, he joined the Additives Research Division of Ciba-Geigy at Marly, Switzerland. He worked there as a synthetic chemist on new UV absorbers for engineering plastics and coatings. In 1994, he moved to the Ciba-Geigy International Research Laboratories in Takarazuka, Japan, to lead a project on radical photoinitiators for photoresists. After returning to Ciba Specialty Chemicals, later Ciba Inc. in Basel in 1998, he worked on cationic and radical photoinitiators for printing inks and coatings, and on dyes for optical information storage. In 2003, he was named Ciba Research Fellow. When Ciba was acquired by BASF SE in 2009, he transferred to BASF Schweiz AG, working as principal scientist on photoinitiators and photosensitive organic materials for electronic applications until his retirement in 2018.

Upcoming video presentation…
8/ Safety issues of industrial photochemistry and adequate responses (Alexander Peschl, Peschl Ultraviolet GmbH, proQuarz GmbH and Peschl UV-Consulting).

Course synopsis: relevant sources of ignition ; electrical functional and structural safety ; risk reduction in photoreactor ; residual hazards ; operator requirements ; qualification of photoreactors.

Lecturer biography: Alexander Peschl is the CEO of Peschl Ultraviolet GmbH, proQuarz GmbH and Peschl UV-Consulting, based in Mainz, Germany. He has more than 20 years of experience with the international pharmaceutical and chemical industry, as well as in the development and sales of process plant equipment for applied photochemistry worldwide. Besides building commercial scale photoreactors, irradiation units, and dedicated quartz glass products, he has worked with major manufacturers of fine chemicals and pharmaceuticals, as a recognized specialist for then scaling-up of photochemical reactions. Peschl is a member of the DIN committee of standardization and works actively at the working group for Glassware and Apparatus.