دانلود کتاب انتشار ناشی از تجمع – کاربردهای سنجش زیستی، تصویربرداری زیستی و زیست پزشکی-بخش 2

As human living standard improves, healthcare and medicine have drawn increasing attention from both scientists and ordinary people, which promote the rapid development of advanced diagnostic and therapeutic techniques. Fluorescence, with the advantages of real-time imaging, high sensitivity, superb spatial and temporal resolution, and simple operation, has been employed for the development of novel diagnostic and therapeutic techniques. Most conventional fluorescent materials suffer from the aggregation-caused quenching (ACQ) effect, with bright emission in their dilute solutions, but weak or completely quenched fluorescence at high concentrations or in the aggregated state. To avoid ACQ from taking effect, conventional fluorescent materials are mostly utilized at low concentrations, which introduce the problems of easy photobleaching, low imaging contrast, and unsatisfying therapeutic performance, and greatly hamper their widespread application in the biomedical field.