Chiral Noncovalent Peptide Glasses for Highly Circularly Polarized Luminescence

Abstract

Abstract Peptide‐based noncovalent glasses exhibit natural origins, green synthesis conditions, and self‐healing properties, representing a promising sustainable alternative to conventional glasses. However, developing chiral noncovalent peptide glasses with highly circularly polarized luminescence (CPL) is still a challenging task. Herein, a supramolecular‐coordination synergistic induced strategy is reported for constructing enantiomeric noncovalent peptide glasses from carnosine (Car) enantiomers and metal ions (Zn 2+ , Eu 3+ , Tb 3+ , Gd 3+ ) under ambient conditions. The resulting chiral Car(M) peptide glasses not only exhibit high optical transparency (>90%), large sizes, easily processable shapes, and high ambient self‐healing performances, but also show programmable multicolor emission, chiral amplification, and full‐spectrum CPL encoding. Due to the synergistic metal coordination and hydrogen‐bonded supramolecular interactions, the obtained chiral Car(M) glasses reveal record‐high and tunable CPL with dissymmetry factors (|g lum |) up to 0.29. Leveraging the high transparency and multicolor chiral emission of Car(M) glasses, an anti‐counterfeiting platform is demonstrated including flexible multicolor QR codes, filter‐resolved patterns, polarization‐sensitive Morse codes, and programmable dot‐array encryption. This work fabricates new chiral noncovalent peptide glasses that exhibit rapid self‐healing capabilities and high, tunable CPL performance, thereby pioneering a novel avenue for chiral photonic applications.