Reversible Morphology Switching of Colloidal Particles

Journal Article · 24 September 2018 · Chemistry of Materials

DOI: https://doi.org/10.1021/acs.chemmater.8b03227 · OSTI ID:1659480

Liu, Mingzhu ^[1]; Zheng, Xiaolong  ^[2]; Dong, Fangyuan ^[2]; Ward, Michael D.  ^[2]; Weck, Marcus  ^[2]

---

1. New York Univ. (NYU), NY (United States). Molecular Design Inst.; NYU
2. New York Univ. (NYU), NY (United States). Molecular Design Inst.

A facile method has been discovered that enables switching of non-cross-linked poly(styrene) (Nx-PS) colloidal particle morphologies, including spherical and anisotropic convex- convex, plano-convex, and concave-convex. The anisotropic morphologies can be achieved readily from spherical Nx-PS particles through control of annealing time at elevated temperatures or surfactant concentration. These anisotropic morphologies can be reversed to spherical at lower temperatures, and reversible morphology switching between any pair of anisotropic morphologies also can be attained. This approach to particle morphology switching establishes a straightforward method for the synthesis of designer anisotropic particles using commercially available spherical particles as starting materials.

• Research Organization: New York Univ. (NYU), NY (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES)
• Grant/Contract Number: SC0007991
• OSTI ID: 1659480
• Journal Information: Chemistry of Materials, Journal Name: Chemistry of Materials Journal Issue: 19 Vol. 30; ISSN 0897-4756
• Publisher: American Chemical Society (ACS)Copyright Statement
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
colloidal synthesis
morphology switch
poly(styrene)
reversibility
swelling behavior