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- Title
ABC‐Type, Bola‐Form Giant Surfactants: Synthesis and Self‐Assembly.
- Authors
Yan, Xiaojin; Hou, Bo; Shao, Yu; Xu, Yu‐Chun; Li, Wei‐Yi; Guo, Qing‐Yun; He, Jinlin; Ni, Peihong; Zhang, Wen‐Bin
- Abstract
Due to the fast phase separation kinetics and small feature size, the self‐assembly of giant molecules has attracted lots of attention. However, there is not much study on multicomponent giant surfactants. In this work, through a modular synthetic strategy, different polyhedral oligomeric silsesquioxane (POSS)‐based molecular nanoparticles are installed with diverse functionalities (hydrophobic octavinyl POSS (VPOSS), hydrophilic dihydroxyl‐functionalized POSS (DPOSS), and omniphobic perfluoroalkyl‐chain‐functionalized POSS (FPOSS)) on the ends of one polystyrene (PS) chain to build up a series of triblock bola‐form giant surfactants denoted as XPOSS–PSn–FPOSS (X represents V or D). The target molecules are prepared by a combination of atom transfer radical polymerization (ATRP), esterification, as well as Cu(I)‐catalyzed azide‐alkyne cycloaddition (CuAAC) and thiol–ene "click" reactions. These macromolecules are thoroughly characterized by combined technologies including nuclear magnetic resonance (NMR), size exclusion chromatography (SEC), and matrix‐assisted laser desorption/ionization time‐of‐flight mass spectrometry (MALDI‐TOF MS) analyses. It is revealed by small angle X‐ray scattering (SAXS) and transmission electron microscopy (TEM) that VPOSS–PSn–FPOSS adopts a two‐phase separation scenario where VPOSS and POSS are segregated in one phase. DPOSS–PSn–FPOSS with a third hydrophilic DPOSS shows a three‐phase separation scenario, where highly ordered phase structures are difficult to develop owing to the competition of mutual phase separation processes and may be trapped in kinetically metastable states.
- Subjects
MATRIX-assisted laser desorption-ionization; PHASE separation; TIME-of-flight mass spectrometry; SURFACE active agents; GEL permeation chromatography; SMALL-angle scattering; NUCLEAR magnetic resonance
- Publication
Macromolecular Rapid Communications, 2023, Vol 44, Issue 1, p1
- ISSN
1022-1336
- Publication type
Article
- DOI
10.1002/marc.202200319