Several factors influence the fluorescence of nanomaterials:
1. Size: As mentioned, the size of the nanoparticles directly affects the wavelength of the emitted light due to quantum confinement effects.
2. Shape: The shape of the nanoparticles can also influence their optical properties. For example, nanorods and nanowires have different fluorescence characteristics compared to spherical nanoparticles.
3. Surface Chemistry: The surface of the nanoparticles can be modified with various ligands, which can affect their fluorescence. Surface defects and the presence of certain functional groups can quench or enhance fluorescence.
4. Environment: The surrounding medium, such as solvents, pH, and temperature, can also impact the fluorescence properties of nanomaterials.
