Microporous Cyanate Resins: Synthesis, Porous Structure, and Correlations with Gas and Vapor Adsorptions
摘要:
Three silicon and nitrogen-centered cyanate monomers tetrakis(4-cyanatophenyl)silane, tetrakis(4-cyanato-biphenyl)silane, and tris(4-cyanatobiphenyl)amine were designed and synthesized, which were then polymerized via thermal cyclotrimerization reaction to create highly porous cyanate resin networks with systematically varied nodes and linking struts. The chemical structures of monomers and polymers were confirmed by H-1 NMR, FTIR, solid-state C-13 CP/MAS NMR spectra, and elemental analysis. The products are amorphous with 5% weight-loss temperatures over 428 degrees C. The results based on N-2 and CO2 adsorption isotherms show that the pores in these polymers mainly locate in the microporous region, and the BET surface areas are up to 960 m(2) g(-1), which is the highest value for the porous cyanate resin reported to date. The nitrogen- and oxygen-rich characteristics of cyanate resins lead to the networks strong affinity for CO2 and thereby high CO2 adsorption capacity of 11.1 wt % at 273 K and 1.0 bar. The adsorption behaviors of H-2, CO2, benzene, n-hexane, and water vapors were investigated by correlating with the chemical composition and porosity parameters of the networks as well as the physicochemical nature of adsorbates.
Self-assembled flexible metallo-supramolecular film based on Fe(II) ion and triphenylamine-subsituted alkyl terpyridine towards electrochromic application
The present invention provides various compounds, compositions, methods, and processes for forming a cross-linked conductive polymeric layer in an electronic device.
本发明提供了各种化合物、组合物、方法和过程,用于在电子设备中形成交联导电聚合层。
Vibration‐Regulated Multi‐State Long‐Lived Emission from Star‐Shaped Molecules
作者:Yiran Li、Glib V. Baryshnikov、Farhan Siddique、Peng Wei、Hongwei Wu、Tao Yi
DOI:10.1002/anie.202213051
日期:2022.11.25
Multi-state long-lived emission has been obtained by regulating the molecular motions of star-shaped molecules. Reverse intersystem crossing assisted by the T2 state of the star-shaped molecules leads to thermally activated delayed fluorescence in solution and the solid state. Suppressing the molecular motions of the dye in a polymer leads to ultralong room-temperature phosphorescence.
通过调节星形分子的分子运动,获得了多态长寿命发射。由星形分子的 T 2状态辅助的反向系统间穿越导致溶液和固态中的热激活延迟荧光。抑制聚合物中染料的分子运动会导致超长室温磷光。
COMPOSITION FOR USE IN ORGANIC DEVICE, POLYMER FILM, AND ORGANIC ELECTROLUMINESCENT ELEMENT
申请人:Mitsubishi Chemical Corporation
公开号:EP3173456A1
公开(公告)日:2017-05-31
The present invention relates to a composition for use in an organic device, comprising at least two cross-linking compounds, wherein
each of the at least two cross-linking compounds is a polymer that has a hole-transporting site and constitutional repeating units, the at least two polymers having different average numbers of cross-linking groups per constitutional repeating unit and/or different numbers of cross-linking groups in portions other than the constitutional repeating units, and
wherein the cross-linking compounds are compounds having a partial structure of the following formula [109]:
The present invention further pertains to an organic electroluminescent element that comprises an anode and a cathode on a substrate and at least one organic layer disposed between the anode and the cathode, wherein at least one organic layer is a layer that is produced by forming a film of the composition for use in an organic device above.
The present invention provides various compounds, compositions, methods, and processes for forming a cross-linked conductive polymeric layer in an electronic device.