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DTSTAMP:20260105T102826
DTSTART;TZID=America/Detroit:20260212T160000
DTEND;TZID=America/Detroit:20260212T171500
SUMMARY:Workshop / Seminar:Visualizing photoinduced electron transfer in molecular photocatalysts using ultrafast x-ray spectroscopy
DESCRIPTION:Photocatalytic dyads that combine chromophore and catalytic centers are commonly employed motifs for homogeneous light-induced multi-electron transfer catalysis. The efficiency and dynamics of directional charge separation within these molecular systems are critical excited state properties that underpin the photochemical activity of the dyads. The excited state dynamics of such systems are often investigated using optical spectroscopy methods\, which afford the high temporal resolution to capture the ultrafast dynamics of charge migration\, but are not explicitly site selective. Alternatively\, element-specific ultrafast x-ray spectroscopy offers a unique opportunity to track the redistribution of charge across the specific molecular motifs within the dyad. We are applying a combination of metal and ligand atom x-ray absorption spectroscopies to resolve the degree of intramolecular excited state charge separation in tetrapyridophenazine (tpphz)-bridged photocatalytic dyads. This work reveals electron accumulation as the primary mechanistic role of azaacene containing bridging ligands employed in photocatalytic dyads.
UID:138403-21882907@events.umich.edu
URL:https://events.umich.edu/event/138403
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Chemistry,Physical Chemistry,Science
LOCATION:Chemistry Dow Lab - 1640
CONTACT:
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DTSTAMP:20260130T181648
DTSTART;TZID=America/Detroit:20260212T163000
DTEND;TZID=America/Detroit:20260212T180000
SUMMARY:Lecture / Discussion:Nathan R. Platte\, \"Glad Company: A Songful History of Mary Poppins’s Bert\"
DESCRIPTION:The Department of Musicology hosts a talk by guest scholar Nathan R. Platte\, Professor of Musicology\, University of Iowa. Free and open to the public.\n\nIn Pamela Travers’s *Mary Poppins* novels\, Bert is a minor character. In Disney’s 1964 film musical\, he is a major one: a friend\, mentor\, father figure\, and jack-of-all trades who sings half of the film’s songs. This presentation accounts for the difference between books and film by showing how Bert’s character became a recurring solution to problems arising in the film’s development. Increasingly\, Bert’s songs came to hold the more slippery threads of Travers’s novels\, including matters of social standing\, affection\, and spiritual wonder. Drawing together story treatments\, conference notes\, scripts\, and song drafts\, this talk frames Bert as a reconciling presence\, whose onscreen assistance of others echoes his role in assuaging disagreement between novelist Travers and the film’s songwriters\, Richard and Robert Sherman.\n\nRefreshments to follow.
UID:144277-21895110@events.umich.edu
URL:https://events.umich.edu/event/144277
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Free,Lecture,Media,North Campus,Research,Scholarship,Talk
LOCATION:Earl V. Moore Building - Watkins Lecture Hall
CONTACT:
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