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Тонкие химические технологии

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СТРУКТУРНАЯ ДИНАМИКА СВОБОДНЫХ МОЛЕКУЛ И КОНДЕНСИРОВАННОГО СОСТОЯНИЯ ВЕЩЕСТВА. Часть II. ПЕРЕХОДНЫЕ СТРУКТУРЫ В ХИМИЧЕСКИХ РЕАКЦИЯХ

https://doi.org/10.32362/2410-6593-2017-12-4-5-35

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Аннотация

Базовые знания человечества до сих пор относятся к описанию электронов и атомов в веществе, находящемся в состоянии равновесия, или близком к равновесию и медленно изменяющемуся во времени. В то же время известно, что химические реакции носят динамический характер, а элементарный акт химической реакции происходит в фемтосекундном временном интервале. Дифракция электронов с высоким временным и пространственным разрешением открыла возможность прямого наблюдения процессов, происходящих в переходном состоянии вещества (молекулярный фильм). Здесь необходимо обеспечить временное разрешение порядка 100 фс, что соответствует переходу системы через энергетический барьер поверхности потенциальной энергии, который описывает химическую реакцию - процесс разрушения и образования новых связей взаимодействующих реагентов. Таким образом, может быть раскрыта возможность исследования когерентной ядерной динамики молекулярных систем и конденсированного состояния вещества, включая его экстремальные состояния. За последние два десятилетия было возможно наблюдать движение ядер в молекулах во временном интервале, соответствующем периоду их колебаний. Наблюдаемые когерентные изменения в ядерной системе в такие временные интервалы определяют фундаментальный переход от стандартной кинетики химических реакций к динамике фазовой траектории отдельной молекулы, томографии молекулярного квантового состояния.

Об авторах

А. А. Ищенко
Московский технологический университет (Институт тонких химических технологий им. М.В. Ломоносова)
Россия

доктор химических наук, профессор, заведующий кафедрой аналитической химии им. И.П. Алимарина

119571, Россия, Москва, пр-т Вернадского, д. 86



Ю. И. Тарасов
Московский технологический университет (Институт тонких химических технологий им. М.В. Ломоносова)
Россия

доктор физико-математических наук, профессор, заведующий кафедрой физики и технической механики

119571, Россия, Москва, пр-т Вернадского, д. 86



Л. Шефер
Университет штата Арканзас
Россия

профессор, Факультет химии и биохимии,

Фэйтвилл, 72701, Арканзас, США



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Для цитирования:


Ищенко А.А., Тарасов Ю.И., Шефер Л. СТРУКТУРНАЯ ДИНАМИКА СВОБОДНЫХ МОЛЕКУЛ И КОНДЕНСИРОВАННОГО СОСТОЯНИЯ ВЕЩЕСТВА. Часть II. ПЕРЕХОДНЫЕ СТРУКТУРЫ В ХИМИЧЕСКИХ РЕАКЦИЯХ. Тонкие химические технологии. 2017;12(4):5-35. https://doi.org/10.32362/2410-6593-2017-12-4-5-35

For citation:


Ischenko A.A., Tarasov Y.I., Schäfer L. STRUCTURAL DYNAMICS OF FREE MOLECULES AND CONDENSED STATE OF MATTER. Part II. TRANSIENT STRUCTURES IN CHEMICAL REACTIONS. Fine Chemical Technologies. 2017;12(4):5-35. https://doi.org/10.32362/2410-6593-2017-12-4-5-35

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