Semiconducting polymer dots as fluorescent probes for in vitro biosensing

Area of Science:

• Nanotechnology
• Biomedical Engineering
• Analytical Chemistry

Background:

• Semiconducting polymer dots (Pdots) offer superior optical properties like high brightness and photostability.
• Pdots exhibit good biocompatibility, enabling diverse biological applications.
• Existing reviews focus on in vivo applications, leaving in vitro biosensing underexplored.

Purpose of the Study:

• To systematically review the progress of Pdots in in vitro biosensing applications.
• To highlight the properties and functionalization strategies of Pdots for biosensing.
• To provide perspectives on future research directions in Pdots-based in vitro diagnostics.

Main Methods:

• Literature review of studies employing Pdots for in vitro biosensing.
• Analysis of Pdot properties and functionalization techniques relevant to biosensing.
• Categorization of Pdot applications based on target analytes.

Main Results:

• Pdots have been successfully utilized for detecting DNA, microRNA, proteins, enzymatic activity, and small molecules/ions.
• Functionalization of Pdots allows for specific and sensitive biomolecule detection.
• The review consolidates diverse in vitro biosensing strategies using Pdots.

Conclusions:

• Pdots represent a promising platform for developing sensitive and specific in vitro biosensors.
• Further research can enhance Pdot capabilities for advanced point-of-care diagnostics.
• This review serves as a comprehensive resource for researchers in the field.