The sea surface is characterized by an organic enriched microlayer. When exposed to solar radiation, it has been demonstrated that the surface is a source of volatile organic compounds (VOC) as well as highly functionalized VOCs. Therefore, photo-induced chemical processes occurring at the air-sea interface may lead to the formation of low molecular weight organic compounds able to condense, leading to SOA formation and growth. In order to bring further comprehension, experimental studies have been performed in a 2m3 Teflon multiphase atmospheric simulation chamber in which a glass container is inserted. Formation of particles has been initiated through the VUV irradiation (centred at 365 nm) of a liquid mixture of humic acid (photosensitizer) and nonanoic acid (surfactant). Under our experimental conditions, particle number concentration (D50 > 2.5 nm) increased after 10 min of irradiation up to 5000 cm-3. Particle size distribution was measured 4 hours after starting irradiation. Ozone was finally added in the dark and particle formation was observed, sustaining the presence of SOA precursors among the VOCs formed during irradiation, confirmed by PTR-ToF-MS and GC/MS analysis. In addition, orbitrap LC/MS analysis has shown clearly the presence of unsaturated aldehydes (C5-C8) in liquid content. Particle formation linked to the properties of gas and liquid phases will be presented. Atmospheric implication of photosensitized reactions as a source of SOA loading in the marine boundary layer will be discussed.