具有碳氟尾链的可聚合双亲分子的合成及其溶致液晶相结构

打开文本图片集

中图分类号： O753+.2 （20 文献标识码：A doi：10.37188/CJLCD.2025-0083 CSTR：32172.14.CJLCD.2025-0083

Synthesis of polymerizable amphiphilic molecules with fluorocarbon tails and investigations of their lyotropic liquid crystal structures

MILongxiao ⋅1，2 ， FENG Xunda1.2*

（1. State Key Laboratory of Aduanced Fiber Materials， College of Materials Science and Engineering， Donghua University，Shanghai 2Ol62O，China; 2. Center for Aduanced Low-Dimension Materials， Donghua University，Shanghai 2Ol62O， China）

Abstract：The formationof lyotropic liquid crystalline（LLC） phases from photocurable amphiphilic small molecules ofers an effective strategy for fabricating polymeric materials with wel-efined nanostructures. Such self-assembly is primarily driven by phase separation between hydrophilic and hydrophobic segments， with hydrophobic interactions playing a crucial role in the formation of ordered structures. However， conventional amphiphiles typically employ hydrocarbon tails，which require relatively long chain lengths to provide suficient hydrophobic driving force，thereby limiting the achievable structural miniaturization （typically >3nm ）. To overcome this limitation，we designed and synthesized a novel polymerizable ionic amphiphile，EAF8-AC，featuring a fluorocarbon tail with high hydrophobicity and low conformational freedom. The LLC behavior of hydrated EAF8-AC at room temperature was systematically investigated. A concentration phase diagram was established，and the self-assembled structures were characterized using polarized optical microscopy （POM） and smal-ngle X-ray scattering （SAXS）. The evolution of mesophase structures was interpreted based on the critical packing parameter（CPP） theory. Compared to conventional hydrocarbon-based amphiphiles，EAF8-AC enables the formation of more compact ordered structures，demonstrating its potential for constructing high-resolution nanomaterials. Key words： lyotropic liquid crystal；fluorocarbon tail；polymerizable amphiphile

1引言

在一些高分辨精度要求的应用场景中，有序纳米材料的精度和排列方式直接影响最终性能[1-2]。（剩余11282字）