Multiple Stimuli-Response Polychromatic Carbon Dots for Advanced Information Encryption and Safety

Area of Science:

• Materials Science
• Optoelectronics
• Information Security

Background:

• Optical information encryption is crucial for data protection and information safety.
• Developing materials with multiple stimuli-response capabilities is key for high-capacity encryption.
• Carbon dots (CDs) are promising due to their tunable emission, stability, and diverse optical properties.

Purpose of the Study:

• To review factors influencing the polychromatic emission and diverse luminous categories of carbon dots.
• To emphasize substrate engineering strategies for optimizing the optical features of carbon dots.
• To explore high-capacity information encryption and safety strategies utilizing the optical properties of carbon dots.

Main Methods:

• Review of carbon core, functional groups, and solvent effects on carbon dot emission.
• Analysis of substrate engineering techniques for enhancing carbon dot optical performance.
• Compilation of strategies for information encryption based on carbon dot fluorescence, afterglow, and upconversion.

Main Results:

• Carbon dots exhibit tunable polychromatic emission and multiple luminous categories (fluorescence, afterglow, upconversion).
• Substrate engineering significantly impacts the optical characteristics and encryption capabilities of carbon dots.
• External stimuli can modulate the optical output of carbon dots for dynamic encryption.

Conclusions:

• Carbon dots are ideal candidates for advanced optical information encryption and safety due to their versatile optical properties.
• Manipulation of carbon dot synthesis and substrate design enables high-capacity, stimuli-responsive information security solutions.
• This review serves as a reference for developing next-generation optical information encryption technologies using carbon dots.