Zwitterionic Graphene Quantum Dots to Stabilize Pickering Emulsions for Controlled-Release Applications. Academic Article

abstract

• Graphene quantum dots (GQDs) are a subset of the nanocarbon material family, which promise a wide spectrum of applications. Herein, we describe amphiphilic graphene quantum dots with zwitterionic features (ZGQDs), which are able to stabilize the oil/water interface. ZGQDs were fabricated by modifying GQDs with tertiary amine groups and alkyl groups. Moreover, the blocking and unblocking behavior of ZGQDs at the oil/water interface could be tuned by adjusting pH values in the aqueous phase. It would provide a flexible and adjustable method to manipulate interfacial properties of ZGQDs, which enabled a switchable molecular diffusion through a fluid-fluid interface. ZGQDs have shown well-controlled interfacial behavior under different pH conditions, indicating great potential for applications in controlled molecular diffusion based on nanoparticles demonstrated in this work.

authors

• Wang, Qingsheng

published proceedings

• ACS Appl Mater Interfaces

altmetric score

• 43

author list (cited authors)

• Ma, R., Zeng, M., Huang, D., & Wang, Q.

citation count

• 4

complete list of authors

• Ma, Rong||Zeng, Minxiang||Huang, Dali||Wang, Qingsheng

publication date

• February 2022

publisher

• American Chemical Society (ACS)  Publisher

published in

• ACS Applied Materials & Interfaces  Journal

keywords

• Controlled-release
• Graphene Quantum Dots
• Ph-responsive
• Pickering Emulsifier
• Zwitterionic

PubMed Central ID

• 35080854

Digital Object Identifier (DOI)

• 10.1021/acsami.1c23226

start page

• 7486

end page

• 7492

volume

• 14

issue

• 5

URL

• http://dx.doi.org/10.1021/acsami.1c23226