Abstract

Alzheimer's disease (AD) is a progressive neurodegenerative disorder and is the main cause of dementia worldwide. As the pathogenesis of AD is quite complicated, there is continuous attention to AD-associated active species, such as amyloid-β plaques, neurofibrillary tangles, metal ions, reactive oxygen/nitrogen/sulphur species, cholinesterase, viscosity, formaldehyde and so on. To this end, a series of small molecular fluorescent probes for these active species have been explored for early diagnosis and even remedy of AD. Herein, we systematacially summarize the versatile fluorescent probes mainly in recent three years, including the relationship between the structure and properties as well as the targeted diagnosis and imaging application of all these fluorescent probes. Moreover, the challenges and perspectives of the AD-related fluorescent probes are briefly explicated. We firmly expect this review may provide guidance for constructing new AD-relevant fluorescent probes and promote the clinical study of AD.

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