Ultrasmall organosilica nanoparticles with strong solid-state fluorescence for multifunctional applications

Area of Science:

• Materials Science
• Nanotechnology
• Biomedical Engineering

Background:

• Organosilica nanoparticles (ONs) are emerging photoluminescent nanomaterials with good biocompatibility.
• Existing ONs face challenges like complex preparation, poor photostability, and aggregation-induced quenching, limiting their applications.

Purpose of the Study:

• To design and synthesize solid-state fluorescent ONs to mitigate aggregation-induced quenching.
• To demonstrate the utility of these ONs in fingerprint detection, WLEDs, and cellular imaging.

Main Methods:

• A facile one-step hydrothermal method was employed for the synthesis of ultrasmall, orange-emitting ONs.
• The solid-state fluorescent properties of the synthesized ONs were characterized.

Main Results:

• The prepared ONs exhibited successful application in fingerprint detection and WLED fabrication.
• Ultrasmall ONs demonstrated specific lysosome-targeting in various cell lines, including cancer and non-cancerous cells.
• The solid-state nature of the ONs effectively prevented aggregation-induced quenching.

Conclusions:

• The novel solid-state fluorescent ONs are ideal candidates for photoluminescent materials.
• These ONs offer significant potential for diverse biological and photoelectric applications.