Zhou, SY; Guan, JY; Li, ZQ; Zhang, QF; Zheng, JF; Li, SH; Zhang, SB in [Zhou, Shengyang; Guan, Jiayu; Li, Ziqin; Zhang, Qifeng; Zheng, Jifu; Li, Shenghai; Zhang, Suobo] Chinese Acad Sci, Changchun Inst Appl Chem, Key Lab Ecomat, Changchun 130022, Peoples R China; [Zhou, Shengyang; Guan, Jiayu; Li, Ziqin; Li, Shenghai; Zhang, Suobo] Univ Sci & Technol China, Hefei 230026, Peoples R China published Synthesis of Fluorinated Poly(phenyl-alkane)s of Intrinsic Microporosity by Regioselective Aldehyde (A(2)) + Aromatics (B-2) Friedel-Crafts Polycondensation in 2021.0, Cited 45.0. Formula: C7H5NO3. The Name is 3-Nitrobenzaldehyde. Through research, I have a further understanding and discovery of 99-61-6.
The design of functionalized porous materials is an important research direction in material science, especially for fluorine-containing materials with enhanced thermal/oxidative stability, lower dielectric constants, and better gas-selective permeation. In this work, a series of poly(phenyl-alkane)s of intrinsic microporosity (PIM-xR) were synthesized by the methanesulfonic acid-catalyzed Friedel-Crafts hydroxyalkylation polycondensation of contorted and rigid multibenzene and benzaldehyde derivatives. The PIM-xR exhibited good thermal stability, excellent solution processability, and high Brunauer-Emmett-Teller (BET) surface areas (400-1200 m(2) g(-1)). The physicochemical properties and applications of PIM-xR could be tuned by the type, quantity, distribution, and postmodification of substituents on the benzaldehyde derivatives. Unlike other contorted and rigid multibenzene derivatives, only electron-rich spirobiindane derivatives directly produced soluble, linear, high-molecular-weight polymers without cross-linking because spirobiindane possesses three t-butyl-like structural units that provide large steric hindrance at potential reactive sites. Subsequently, a series of fluorinated PIMs (PIM-xF) with different fluorine contents and distributions were explored, and the relationship between the microporosity of PIM-xR and degrees of rotational freedom of the polymer chains was analyzed using these PIM-xF. Flexible and transparent PIM-xF membranes were easily obtained by solution processing and exhibited high gas permeabilities and moderate permeability selectivity. In particular, the CO2/N-2 separation performance of the PIM-5F membrane exceeded the 2008 Robeson’s upper bound (P-CO2 = 3240 barrer and alpha((CO2/N2)) = 27.9). This work provides a facile method for the precise design and preparation of fluorinated or other functionalized porous materials for environmental and energy applications.
About 3-Nitrobenzaldehyde, If you have any questions, you can contact Zhou, SY; Guan, JY; Li, ZQ; Zhang, QF; Zheng, JF; Li, SH; Zhang, SB or concate me.. Formula: C7H5NO3
Reference:
Thiomorpholine – Wikipedia,
,Thiomorpholine | C4H9NS – PubChem