Эффект внутреннего тяжелого атома на генерации синглетного кислорода в присутствии плазмонных наночастиц
DOI:
https://doi.org/10.31489/2025N2/5-12Ключевые слова:
эффект тяжёлого атома, интеркомбинационная конверсия, синглетный кислород, наноплазмоника, фотосенсибилизаторАннотация
Исследован эффект тяжёлого атома на генерацию синглетного кислорода в плазмонном поле наночастиц серебра. В качестве сенсибилизаторов использованы красители родамин 123 и дибромродамин 123 в плёнках поливинилбутираля. Плёнки красителей были нанесены методом спин-коутинга на островковые плёнки серебра, синтезированные на поверхности кварцевых подложек. Полученные результаты показали, что присутствие атома брома в молекуле красителя увеличивает эффективность производства синглетного кислорода. Вычисленные константы Штерна-Фольмера демонстрируют усиление тушения молекулярным кислородом триплетных состояний молекул красителя дибромродамин 123 в присутствии наночастиц Ag.
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