Intrinsic Luminescence from Nonaromatic Biomolecules

Area of Science:

• Photochemistry and Photophysics
• Biomolecular Chemistry
• Materials Science

Background:

• Novel emitters, termed nonconventional luminophores, utilize electron-rich moieties instead of traditional chromophores.
• Their luminescence mechanisms, particularly for nonaromatic biomolecules, remain largely unclear.
• The clustering-triggered emission (CTE) mechanism has been proposed for unconventional chromophores.

Purpose of the Study:

• To review unconventional biomolecular luminophores.
• To apply the CTE mechanism to explain their luminescence.
• To provide insights into intrinsic emission of nonaromatic biomolecules and cellular fluorescence.

Main Methods:

• Literature review of nonconventional luminophores and biomolecular emitters.
• Application of the clustering-triggered emission (CTE) mechanism.
• Analysis of intrinsic luminescence in nonaromatic biomolecules.

Main Results:

• Nonconventional luminophores, including biomolecules like cellulose and starch, show unique luminescence properties.
• The CTE mechanism provides a viable explanation for the observed luminescence.
• Understanding these emitters can help decipher intrinsic fluorescence in biological systems.

Conclusions:

• The CTE mechanism is crucial for understanding the luminescence of nonconventional biomolecular emitters.
• This work enhances the comprehension of intrinsic emission in nonaromatic biomolecules.
• Potential applications in deciphering cellular and tissue fluorescence are highlighted.