P. W. Ayers (Hamilton, Canada)
R. Boto (Paris, France)
M. Cases (Girona, Spain)
J. Contreras Garcia (Paris, France)
E. O. Gomes (Castelló de la Plana, Spain)
T. Debroise (Paris, France)
L. Ellezam (Paris, France)
P. W. Fowler (Exeter and Sheffield, UK)
G. Frenking (Marburg, Germany; International Solvay Chair in Chemistry 2019)
V. García (Santiago, Chile)
C. Gardenas (Santiago, Chile)
E. Hessou (Abomey-Calavi, Benin)
O. E. Kisende (Kinshasa, Congo)
S. Lapointe (Coventry, UK)
T. N. Le (HoChiMinh-City, Vietnam)
F. Mendez (Mexico City, Mexico)
A. Michalak (Cracow, Poland)
C. Morell (Lyon, France)