Where Precursor Loading Stops Making a Difference: Resolving an Operational Infiltration Limit for Nanoparticle Synthesis Using Dual Quantification of Reverse Micelle Nanoreactors
Year: 2026
Type: article
Abstract: ABSTRACT Achieving precise control over nanoparticle formation remains a fundamental challenge in nanofabrication, particularly for template‐mediated synthesis. Reverse micelle deposition (RMD), using diblock copolymer nanoreactors, enables the synthesis of highly uniform nanoparticles with tunable dimensions. Directly quantifying precursor loading within these nanoreactors remains challenging, as existing techniques are often indirect or chemically specific. Here, we combine PeakForce Quantitative Nanomechanics (QNM) and Quartz Crystal Microbalance with Dissipation monitoring (QCM‐D) to independently examine precursor loading of poly(styrene)‐b‐poly(2‐vinyl pyridine) (PS‐b‐P2VP) reverse micelles. Despite probing different physical responses, both techniques exhibit the same loading‐dependent evolution, reaching a common plateau at a nominal loading ratio of ∼0.6. AFM measurements of etched nanoparticles reveal a corresponding plateau in particle size, indicating that nanoparticle formation exhibits the same loading threshold. Rather than simply demonstrating that these quantities vary with precursor loading, the independent convergence of nanomechanical, mass, and nanoparticle size measurements on the same loading threshold establishes a quantitative framework for identifying operational precursor loading limits in reverse micelle nanoreactors. As it relies on generic physical responses rather than chemically specific detection, this dual‐quantification framework should be broadly transferable across templated nanoparticle synthesis, providing an experimentally accessible strategy for comparing precursor loading behaviors and optimizing synthesis conditions.
Source: Advanced Materials Interfaces
DOI: 10.1002/admi.70682
Institutions: McMaster University, Concordia University
Language: English
Subfield: Organic Chemistry
Field: Chemistry
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,100
Awards: Engineered surfaces for the control of protein and cell interactions and improved biomedical materials, G2855914081, G2867623532, Nanoparticle Arrays for Novel, Organized Perovskites Assisted by Copolymer assembly Kinetics (NANOPACK): Designer nanomaterials for energy applications, G4973958295, G538234673, G7501326401, G7699662415, G832689143
OpenAlex ID: W7221009759