A Hard Templating Approach to Functional Mesoporous Poly(norborn-2-ene)-Based Monolithic Supports,Macromolecular Chemistry and Physics

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A Hard Templating Approach to Functional Mesoporous Poly(norborn-2-ene)-Based Monolithic Supports
Macromolecular Chemistry and Physics ( IF 2.5 ) Pub Date : 2021-09-15 , DOI: 10.1002/macp.202100247
Hande Acikalin ₁ , Felix Ziegler ₁ , Dongren Wang ₁ , Michael R. Buchmeiser _{1,

2}

Affiliation

A hard-templating method is presented for the synthesis of functional ring-opening metathesis polymerization (ROMP) derived, poly(norborn-2-ene)-based monolithic supports prepared under solvent-induced phase separation conditions using the first-generation Grubbs initiator RuCl₂(PCy₃)₂(CHPh) (1, Cy = cyclohexyl). Norborn-2-ene (NBE), 1,4,4a,5,8,8a-hexahydro-1,4,5,8-exo,endo-dimethanonaphthalene (DMN-H6) and trimethylolpropane-tris-(5-norbornene-2-yl-carboxylate (TMPTNC) are used as monomers and crosslinkers, respectively. 2-Propanol and toluene are used as macro- and microporogen. Silica (SiO₂) nanowires (SNWs) surface-modified with NBE are used as hard templates. exo,endo-Norborn-5-ene-2-ylmethanol (NBE-CH₂OH) is used as functional comonomer. The tailored porogenic system together with the surface-functionalized SNWs allows for a full dispersion of the SNWs in the polymerization mixture and their incorporation into the monolithic structure during the phase separation process. This way, ROMP-derived monoliths with pore dimensions of 10–15 nm, specific surface areas up to 3.7 m² g⁻¹, and pore porosities up to 33% are obtained after removal of the SNWs by chemical etching at room temperature.

中文翻译：

功能性介孔聚（降冰片-2-烯）基整体载体的硬模板方法

提出了一种硬模板方法，用于合成功能性开环复分解聚合 (ROMP) 衍生的、基于聚（降冰片-2-烯）的整体载体，该载体使用第一代格拉布斯引发剂 RuCl 在溶剂诱导相分离条件下制备₂ (PCy ₃ ) ₂ (CHPh) ( 1 , Cy = 环己基)。Norborn-2-ene (NBE), 1,4,4a , 5,8,8a -hexahydro-1,4,5,8- exo , endo -dimethanonaphthalene (DMN-H6) 和 trimethylolpropane-tris-(5-norbornene羧酸-2-基酯（TMPTNC）分别用作单体和交联剂。2-丙醇和甲苯用作大孔和微孔剂。二氧化硅（SiO ₂) 使用 NBE 表面改性的纳米线 (SNW) 作为硬模板。exo，endo -Norborn-5-ene-2-ylmethanol (NBE-CH ₂ OH) 用作功能共聚单体。定制的致孔系统与表面功能化的 SNW 一起允许 SNW 在聚合混合物中完全分散，并在相分离过程中将它们并入整体结构中。通过这种方式，在室温下通过化学蚀刻去除 SNW 后，获得了孔隙尺寸为 10-15 nm、比表面积高达 3.7 m ² g ^-1和孔隙率高达 33% 的ROMP 衍生的整料。

更新日期：2021-10-22

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