Mapping In-plane Orientational Order and Correlation Lengths in Molecular Films using Azimuthal-Scanning Vibrational Sum-Frequency Generation Microscopy†

Key Points

• Highly ordered anisotropic packing structures dictate macroscopic properties and behavior.
• Correlation lengths measure the extent of order within molecular films at various orientations.
• Chemical analysis utilizes azimuthal-scanning vibrational sum-frequency generation microscopy for detailed mapping.
• Understanding these molecular structures may enable advancements in material design and interface engineering.