Chiral fluorescent films of gold nanoclusters and photonic cellulose with modulated fluorescence emission

Chiral fluorescent composite films of gold nanoclusters (AuNCs) and photonic cellulose nanocrystals (CNCs) demonstrate modulated fluorescence emission due to the stopband- and band edge-photoemission coupling effect between the photonic CNCs and fluorescent AuNCs, showing promising potentials as fluorescent nanosensors, optical switches and optical memory devices.