1：Experimental Design and Method Selection:

The study involved synthesizing polyisobutylene (PIB) and its block copolymer with styrene (PSt-b-PIB-b-PSt), designing a short-chain PIB functionalized with an amino-group (PIB-NH2) ligand, and performing ligand exchange on CdSe nanoplatelets (NPLs) and PbS quantum dots (QDs) from organic to inorganic ligands (S2- or I-), followed by attachment of PIB-NH

2：The composites were prepared by blending functionalized nanocrystals with polymer solutions and processing into thin films via drop-casting or spin-coating. Sample Selection and Data Sources:

CdSe NPLs and PbS QDs were chosen for their sensitivity to environmental conditions. Samples included S2--capped CdSe NPLs, I--capped PbS QDs, and their composites with PIB, PSt-b-PIB-b-PSt, and poly(lauryl methacrylate) (PLMA) as a reference.

3：List of Experimental Equipment and Materials:

Chemicals such as TiCl4, isobutylene, styrene, solvents (n-hexane, CH2Cl2, MFA, n-octane, toluene, acetone), and polymers (PIB, PSt-b-PIB-b-PSt, PLMA) were used. Equipment included size exclusion chromatography (Agilent 1200), NMR spectrometer (Bruker AC-400), spectrophotometers (Cary 60 and Cary 5000), spectrofluorimeters (Fluoromax-4 and Fluorolog-3), integrating sphere (Quanta-φ), xenon lamp for photostability tests, and centrifugation equipment.

4：Experimental Procedures and Operational Workflow:

Synthesis of polymers and ligands, ligand exchange on nanocrystals, phase transfer, blending with polymer solutions, and film deposition. Photostability tests involved illumination with a 1000 W xenon lamp and monitoring PL changes; chemical stability tests involved immersion in 5 M HCl and visual observation.

5：Data Analysis Methods:

Optical spectroscopy (absorption and PL spectra), PL quantum yield measurements, size exclusion chromatography for polymer characterization, and NMR for ligand characterization. Statistical analysis of PL intensity changes over time.