1：Experimental Design and Method Selection:

The study involved the preparation of a two photon absorbing (TPA) material consisting of silver nanoparticles and a triphenylamine-thiol derivative (TBS) through interfacial coordination effect according to the soft-hard-acid-base principle. The interfacial structure and morphology of the hybrid were researched in detail. Linear and nonlinear optical properties of the hybrid were studied.

2：Sample Selection and Data Sources:

The samples included free TBS, pure AgNPs, and Ag-TBS hybrids. The hybrids were prepared by mixing TBS-ethanol solution with AgNPs-cyclohexane.

3：List of Experimental Equipment and Materials:

Scanning electron microscope (SEM, S-4800), transmission electron microscopy (TEM, JEM-2100, 300 kV), Fourier transform infrared spectroscopy (FTIR, IRPrestige-21), ultraviolet-visible (UV–vis) spectrophotometer (TU-1901), fluorescence spectrophotometer (Hitachi F-7000), and a femtosecond laser pulse (680–1080 nm, 80 MHz) for TPA cross-section measurement.

4：Experimental Procedures and Operational Workflow:

The morphology was characterized through SEM and TEM. Linear optical properties were studied using UV–vis spectrophotometer and fluorescence spectrophotometer. TPA cross-section was measured by an open-aperture Z-scan technique.

5：Data Analysis Methods:

The TPA cross-section (δ) was calculated using specific equations provided in the paper.