固體聚離子液體的有序性表征

1、聚離子液體有序性表征聚離子液體有序性表征聚離子液體有序性具體表征手段目錄聚離子液體 1 3 2聚離子液體自組裝離子液體（IL）：是指由有機(jī)陽(yáng)離子和無(wú)機(jī)陰離子組成的物質(zhì),一般認(rèn)為其熔點(diǎn)低于100。聚離子液體(PIL)即是離子液體的聚合物，與離子液體相比最大的優(yōu)點(diǎn)就是空間可控性。 Mecerreyes D. Polymeric ionic liquids: Broadening the properties and applications of polyelectrolytesJ. Progress in Polymer Science, 2011, 36(12): 1629-1648.1：聚離

2、子液體：聚離子液體聚離子液體的應(yīng)用 Mecerreyes D. Polymeric ionic liquids: Broadening the properties and applications of polyelectrolytesJ. Progress in Polymer Science, 2011, 36(12): 1629-1648.2：聚離子液體自組裝：聚離子液體自組裝聚離子液體通常是一種兩親性高聚物，而后通過(guò)自組裝方法納米結(jié)構(gòu)材料的制造引起了越來(lái)越大的興趣。固定納米結(jié)構(gòu)的聚合物所合成聚離子液體所合成聚離子液體嵌段共聚物自組裝嵌段共聚物自組裝，微相分離成不同相態(tài)結(jié)構(gòu)納米結(jié)構(gòu)的聚

3、微相分離成不同相態(tài)結(jié)構(gòu)納米結(jié)構(gòu)的聚離子液體離子液體聚離子液體兩親性分子自組裝成不同的聚離子液體兩親性分子自組裝成不同的有序液晶相結(jié)構(gòu)有序液晶相結(jié)構(gòu)所以我們有必要通過(guò)合適的表征手段對(duì)兩親性聚離子液體自組裝后的局部有序性行為進(jìn)行研究而且通過(guò)結(jié)構(gòu)有序性的研究可以與聚離子液體的一些性質(zhì)進(jìn)行關(guān)聯(lián)。直接直接 cryo-TEM X-ray diffraction Differential scanning calorimetry Polarized optical microscopy (POM) AFM間接間接6. small angle X-ray scattering (SAXS)3：聚離子液體有序性

4、具體表征手段dispersion polymerization：The polymerization proceeded over 24 h at a monomer concent ration of 50 g/L in aqueous solutions at 70 using the water-soluble nonionic initiator 2,2-azobis2-methyl-N-(2-hdroxyethyl) propionamide (VA86).1.Self-Assembly of Poly(ionic liquid)s: Polymerization, Mesostru

5、cture Formation, and Directional Alignment in One StepJiayin Yuan,Sebastian Soll,Markus Drechsler,Axel H. E. M uller,and Markus Antonietti水溶液中乳液聚合水溶液中乳液聚合分散的聚離子液體分散的聚離子液體納米粒子納米粒子用冷沉淀-TEMXRD洋蔥多層囊泡結(jié)構(gòu)洋蔥多層囊泡結(jié)構(gòu)（接近球形）脂質(zhì)單層囊泡結(jié)構(gòu)（各向異性的剛性形態(tài)）脂質(zhì)單層囊泡結(jié)構(gòu)（各向異性的剛性形態(tài)）演變成各向異性存有六方相態(tài)或者四方相態(tài)結(jié)構(gòu)的納米粒子。正方排列DSCPIL-C12Br是非晶的，對(duì)于C

6、14,C16,C18分別在1, 21, and 35出現(xiàn)結(jié)晶的熔融吸熱峰。5.Influence of Anion Exchange in Self-Assembling of Polymeric IonicLiquid Block CopolymersPedro Maria Carrasco,Alaitz Ruiz de Luzuriaga,Marios Constantinou,Prokopios Georgopanos,SofiaRangou,Apostolos Avgeropoulos,Nikolaos E. Zafeirop oulos,Hans-Jurge Gran de,Germ

7、an Cabanero,David Mecerreyes,and Ignacio Garcia*AFM垂直于表面的柱狀相生成small angle X-ray scattering (SAXS)當(dāng)當(dāng)X射線照射到試樣上時(shí)，如果射線照射到試樣上時(shí)，如果試樣內(nèi)部存在納米尺度的電子密度不均勻區(qū)，則試樣內(nèi)部存在納米尺度的電子密度不均勻區(qū)，則會(huì)在入射光束周圍的小角度范圍內(nèi)（一般會(huì)在入射光束周圍的小角度范圍內(nèi)（一般2 6）出現(xiàn)散射）出現(xiàn)散射X射線射線，這種現(xiàn)象稱，這種現(xiàn)象稱為為X射線小角散射或小角射線小角散射或小角X射線散射（射線散射（Small Angle X-ray Scattering），簡(jiǎn)寫為），簡(jiǎn)

8、寫為SAXS 。其物理實(shí)質(zhì)在于散射體和周圍介質(zhì)的電子云密度的差異。SAXS已成為研究亞微米級(jí)固態(tài)或液態(tài)結(jié)構(gòu)的有力工具常見(jiàn)的溶致液晶種類lyotropic liquid crystal respectively for lamellar, Hexagonal and Cubic phase3:2:1:321qqqdSketch model of lyotropic lamellar liquid crystal200400600800100002000400060008000Intesity (a.u.)# detector channel1/d2/d3/d4/d5/d#0q = 2p/p/d

9、2p 2p * * D D# * * cw / (l/ (l* *a) )#0 = beam centercw = channel width (54 m)l = wave-length = 1.542 Aa = sample-detector distanceD D#D D#D D#lyotropic lamellar liquid crystal普適性規(guī)律普適性規(guī)律2:3:1:321qqqlyotropic Hexagonal liquid crystal0.00.10.20.30.40.50204060I(q)q普適性規(guī)律普適性規(guī)律普適性規(guī)律普適性規(guī)律0.195，0.339，0.394，

10、滿足2D六方柱狀結(jié)構(gòu)六方柱狀結(jié)構(gòu)的減少q= 0.189, 0.328, 0.379q= 0.190 and 0.379 滿足1:2層狀相柱狀相的消失，層狀結(jié)構(gòu)生成4.Formation of a Liquid-Crystalline Interpenetrat ing Poly(ionic liquid)Network HydrogelGregory A. Becht,Marina Sofos,Sonke Seifert,and Millicent A. Firestonepolarized optical micrographSAXS SAXS 2-D pattern 柱狀相紋理特征近晶型2

11、:3:1:321qqq3D Interconnected Ionic Nano-Channels Formed in Polymer Films:Self-Organization and Polymerization of Thermotropic BicontinuousCubic Liquid Crystals滿6:8,對(duì)應(yīng)ia3d立方相行為滿足1：2，對(duì)應(yīng)六方柱狀相結(jié)構(gòu)The Effect of Cation Structure on the Mesophase Architecture of Self-Assembled and Polymerized Imidazolium-Based Ionic LiquidsDolly Batra, Sonke Seifert, Millicent A. Firestone*水含量5%，0.2和0.4低散射矢量寬的衍射峰對(duì)應(yīng)的是弱有序的層狀結(jié)構(gòu)水含量21%q=0.197,0.264, and 0.336，0.392滿足對(duì)應(yīng)pn3m立方結(jié)構(gòu)。含水量33%Q=0.192, 0.274, 0.332, and 0.383 A