BEGIN:VCALENDAR VERSION:2.0 CALSCALE:GREGORIAN PRODID:iCalendar-Ruby BEGIN:VEVENT CATEGORIES:Lectures & Presentations DESCRIPTION:Chemistry Colloquium: Dr. Henri-Pierre Jacquot de Rouville \n\n Dr. Henri-Pierre Jacquot de Rouville will be the guest speaker for the Chem istry & Biochemistry Sept. 11th colloquium: Acridinium Recognition Units in Complex Supramolecular Systems. Dr. Jacquot de Rouville is at the Institut de Chimie de Strasbourg (UMR CNRS 7177)\, Université de Strasbourg\, Stras bourg\, France\n\n \n\nAbstract:\n\nEquilibria involving multiple interacti ng life components gave rise to complex assemblies (double helix of DNA\, G -quadruplex secondary structures). In addition\, living organisms are endow ed with numerous remarkable and complex functions (transmission of informat ion\, chemical transformations\, transport\, regulation) mediated by physic al and chemical stimuli. In consequence\, understanding and mimicking these functions using switchable artificial supramolecular systems is of paramou nt importance and still remains a current challenge.\nWe recently reported bis-acridinium supramolecular receptors able to bind guest molecules (Figur e 1). Surprisingly\, acridinium-based receptors are scarcely exploited in s upramolecular chemistry despite their multi-responsive properties. Indeed\, they respond to chemical and redox signals by reversibly modifying their s hape\, their chemical and optical properties. This class of receptors exhib its i) self-complementary behaviors leading to the formation of entwined di mers\,1a ii) narcissistic self-sorting\,1b iii) -donor/-acceptor host-gue st behaviors and were also studied as selective phase transfer agents in pe rfluorocarbons. In addition\, the multi-switching properties of these recep tors were investigated to alter their recognition events with guests. An in creasing complexity has been achieved by the introduction of acridinium uni ts in mechanically interlocked molecules. The dual-readout of the mechanica l response of a [2]rotaxane structure was thus probed. Finally\, the combin ation of the acridinium unit to another multi-responsive unit\, namely porp hyrin core\, led to complex supramolecular systems exhibiting more than eig ht different states. DTEND:20240911T211000Z DTSTAMP:20240921T074028Z DTSTART:20240911T201000Z LOCATION:Walter Hall\, 145 SEQUENCE:0 SUMMARY:Chemistry Colloquium: Dr. Henri-Pierre Jacquot de Rouville UID:tag:localist.com\,2008:EventInstance_47481721315027 URL:https://calendar.ohio.edu/event/chemistry-colloquium-dr-henri-pierre-ja cquot-de-rouville END:VEVENT END:VCALENDAR