{'fraction_non_alphanumeric': 0.024324324324324326, 'fraction_numerical': 0.0009009009009009009, 'mean_word_length': 6.261437908496732, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Shedding Light on Photosensitized Reactions within Marine-Relevant Organic Thin Films

Photochemical processes drive much of the daytime gas-phase chemistry in the atmosphere. Within condensed phases, such as aerosol particles and thin films enriched in organics, much less is understood about these processes. An investigation aimed at better understanding photosensitized reactions that can occur within marine-relevant condensed-phase systems is described herein. In particular, photosensitized reactions have been investigated between a fatty acid model system and different photosensitizers within thin organic films representative of molecular species found in the sea surface microlayer and sea spray aerosols. Photosensitized reactions of thin films containing nonanoic acid and three different photosensitizers, including 4-benzoylbenzoic acid, humic acid, and marine-derived dissolved organic matter, were probed using a suite of analytical techniques, including vibrational spectroscopy, excitation–emission matrix spectroscopy, and ultra-high-resolution mass spectrometry. Considerable differenc...