Fluorinated poly(arylene ether)s with aliphatic chain appended cardo moiety: Synthesis and gas transport properties

Fluorinated Poly(Arylene Ether)s

“…2: Fluorinated Poly(Arylene Ether)s [115] García et al reported the gas transport properties of a series of PAEs with pendant groups (entries 2GS-10 to 2GS-15) ( Table 2.11) [112]. The hexafluoroisopropylidene group-containing polymer had better permeability than that with sulfone (-SO 2 -) groups.…”

“…A series of fluorinated PAEs with an aliphatic chain appended cardo moiety was reported and the effect of cardo moiety together with a long aliphatic chain in PAEs on gas transport properties was investigated (entries 2GS-47 to 2GS-52) ( Table 2.11) [115]. The order of gas permeability and diffusibility coefficients of the PAEs was 7a < 7b < 7c < 7d < 7e < 7f.…”

“…PV has gained widespread acceptance in the chemical industry as an effective process for separating azeotropic mixtures, for example, separation of [65,90,91,102,111,115]. methanol (MeOH)-methyl tert-butyl ether (MTBE) mixture in which the polymeric membrane is the core of the process [116,117].…”

Pillared Carbon Membranes Derived from Cardo Polymers

“…The introduction of bulky groups in the backbone, such as a cardo moiety ( Figure 1 a), can significantly increase the free volume in the polymer [ 3 , 4 ] and in the resulting CMSM by disrupting the packing of the polymer chains. Several cardo polymers have been reported for CO 2 separations [ 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 ]. A series of cardo polymers containing bis(4-aminophenyl) fluorene, which show high thermal stability and solubility, have been reviewed by Korshak [ 5 ].…”

Synthesis of 2,7-Diaryl Substituted Fluorenes and Fluorenones

“…The challenges of various synthetic methods at present are summarized and a brief outlook on possible solutions is provided. Keywords biaryl; fluorene; fluorenone; luminescent material; metallocene 2,7-二芳基取代芴/芴酮及其衍生物(图 1)具有较好 的热稳定性及易于调控结构和性能等优点 [1][2][3] , 不仅成 功应用于有机发光 [4][5][6][7] 、晶体管 [8][9][10][11] 和太阳能电池 [12][13] 等 有机半导体材料, 还广泛应用于聚集诱导发光 [14][15][16][17] 、化 学传感器 [18][19][20][21] 、离子交换和物质传输 [22][23][24][25] 、茂金属聚烯 烃催化剂 [26][27] 和网格化学 [28][29] 等众多前沿研究领域, 发 展前景广阔.然而, 2,7-二芳基取代芴/芴酮的合成依然面临挑战 (图 2A). 传统合成方法以含有联芳基结构的 2,2'-联苯二 甲酸为底物, 在大于 300 ℃的高温下脱水脱羧得到 2,7-二芳基取代芴酮, 再通过还原反应将其转化为 9-无取代 2,7-二芳基取代芴 [30] , 并通过碱性条件下的取代反应进 一步生成 9-取代 2,7-二芳基取代芴 [31][32][33] .…”