Abstract
Mesoscale colloids composed of polyoctahedral silsesquioxanes (POSS) are promising candidates for the self-assembly of hierarchical structures as a continuum of size and morphology can be readily synthesized. However, there are substantial challenges in creating customized colloids that exhibit specific structural features, programmable binding, and stimuli responsiveness. Here, we explore a novel route to gain structural and directable control of these colloids by pairing them with thermoresponsive, polymeric micelles. These polymeric micelles cannot only swell the interstices of oligomeric colloidal droplets with the accuracy provided by the well-defined polymer micellization transition, but also act as absorbable colloidal depletants—a new class of depletants unrecognized by researchers until now—that can direct orientation and position. This dual functionality relies solely on the parameters of temperature and concentration, allowing for simplistic methods of control. Additionally, by selectively tuning other entropic forces at play, new opportunities to direct the transport of molecules for applications in physical and life sciences emerge.
Library of Congress Subject Headings
Colloids; Micelles; Soft condensed matter; Self-assembly (Chemistry); Emulsions
Publication Date
4-17-2025
Document Type
Dissertation
Student Type
Graduate
Degree Name
Biomedical and Chemical Engineering (Ph.D)
Department, Program, or Center
Biomedical Engineering
College
Kate Gleason College of Engineering
Advisor
Jairo Diaz Amaya
Advisor/Committee Member
Steven Weinstein
Advisor/Committee Member
Patricia Taboada-Serrano
Recommended Citation
Niper, Timothy F., "Colloidal Control via Micellar Solutions" (2025). Thesis. Rochester Institute of Technology. Accessed from
https://repository.rit.edu/theses/12083
Campus
RIT – Main Campus
Plan Codes
BMECHE-PHD
Comments
This dissertation has been embargoed. The full-text will be available on or around 4/30/2026.