Pyrene-containing conjugated organic microporous polymers for photocatalytic hydrogen evolution from water

Abstract

Pyrene based conjugated microporous polymers (CMPs) as photocatalysts with promising H2 production efficiencies and very high stability.

Microporous Carbon and Carbon/Metal Composite Materials Derived from Bio-Benzoxazine-Linked Precursor for CO2 Capture and Energy Storage Applications

“…As reported previously, BZ monomers containing free phenolic OH groups can act as efficient catalysts that lower the exothermic curing temperature of the oxazine ring, relative to that of traditional BZ resins [ 54 , 55 ]. Notably, the polymerization temperature of AP-BZ was very low when compared with those of the traditional BZ monomers TPE-BZ and TPEP-BZ [ 52 ], due the acidic character of the phenolic OH group in AP-BZ accelerating the polymerization of the oxazine ring, consistent with previous studies [ 26 ]. Interestingly, after thermal curing polymerization of AP-BZ at 110 and 150 °C, the DSC profiles featured the endothermic peak of the AP-BZ monomer at 186 °C, indicating the stability of the crystalline properties of AP-BZ at these two temperatures.…”

“…Triphenylphosphine (PPh 3 ), methanol (MeOH), ethanol (EtOH), tetrahydrofuran (THF), N , N -dimethylformamide (DMF), triethylamine (Et 3 N, 99.5%), sodium hydroxide (NaOH, 97%), Co(NO 3 ) 2 .6H 2 O (99%), and copper iodide (CuI, 99.5%) were purchased from Alfa Aesar (Haverhill, MA, USA). 1,3,6,8-Tetrabromopyrene (Py-Br 4 ) and P-T were prepared using previously reported procedures [ 52 , 53 ].…”

“…Thus, extensive research efforts will be needed to develop novel materials possessing high specific surface areas that can increase the energy density of supercapacitors while maintaining their power density and cycling stability. In this regard, many porous organic polymers (POPs) featuring suitable pore size distributions—including covalent triazine frameworks (CTFs) [ 39 ], covalent organic frameworks (COFs) [ 40 , 41 , 42 ], hypercrosslinked porous polymers (HCPs) [ 43 , 44 ], conjugated microporous polymers (CMPs) [ 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 ], metal–organic framework [ 48 , 49 , 50 ], and ferrocene-based conjugated microporous polymers [ 51 ]—have been developed to improve the performance of supercapacitors. Supercapacitors can store energy through faradaic (pseudocapacitance) and non-faradaic [electric double-layer capacitance (EDLC)] processes [ 43 , 44 , 45 , 46 , 47 ].…”

Advances in porous organic polymers: syntheses, structures, and diverse applications

“…1 Porous materials are applied in many technological and scientific fields, with a huge number of new advanced porous materials having been developed during the last two decades. [2][3][4][5][6][7][8][9][10][11][12][13][14] Based on the IUPAC classification, porous materials can be divided, based on their pore diameters, into microporous (<2 nm), mesoporous (>2 nm and <50 nm), and macroporous (>50 nm) materials. [15][16][17][18][19][20][21][22] Many various porous materials have been constructed from metal-organic frameworks (MOFs) and porous organic polymers (POPs).…”

Ultrastable Conjugated Microporous Polymers Containing Benzobisthiadiazole and Pyrene Building Blocks for Energy Storage Applications

“…CMPs are porous compounds that are constructed from a covalent connection of π-conjugated building units that extended along with the skeleton, providing them 3D microporosity networks and especially high surface area at times [ 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 ]. They can be easily synthesized by using numerous C–C coupling reactions such as Yamamoto, Sonogashira, and Suzuki coupling, and also oxidative polymerization [ 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 ] which are characterized by a high degree of polymerization and crosslinking densities, as well as facilities the incorporation of different moieties [ 45 , 46 , 47 , 48 , 49 , 50 ]. These coupling methods allow CMPs to highly possess CMPs to differentiate from other conventional polymers, with rapid ion/diffusion kinetics that originates from their individual porous properties [ 51 , 52 , 53 , 54 , 55 ].…”