Tunable construction of biphenyl-based porous polymeric nanostructures and their synergistically enhanced performance in pollutant adsorption and energy storage

Varyambath, Anuraj; Song, Wenjie; Singh, Sanjay; Kim, Ji Su; Kim, Il

doi:10.1016/j.micromeso.2020.110800

Cited by 15 publications

(17 citation statements)

References 71 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the other hand, the cross-linking of simple biphenyl by varying the formaldehyde dimethyl acetal cross-linker has been demonstrated for developing tunable porous materials with different morphologies and supercapacities for the removal of cresol . In addition, Yuan et al reported tailoring pore size distribution of hypercross-linked polymers using a reactive solvent like benzene during the cross-linking of 4,4′-bis(chloromethyl)-1,1′-biphenyl (BCB) .…”

Section: Resultsmentioning

confidence: 99%

“…43 On the other hand, the cross-linking of simple biphenyl by varying the formaldehyde dimethyl acetal cross-linker has been demonstrated for developing tunable porous materials with different morphologies and supercapacities for the removal of cresol. 44 In addition, Yuan et al reported tailoring pore size distribution of hypercross-linked polymers using a reactive solvent like benzene during the cross-linking of 4,4′-bis-(chloromethyl)-1,1′-biphenyl (BCB). 45 Besides, self-cross-linking of BCB resulted in a variety of polymers with potential applications such as iodine capture, 46 CO 2 fixation, 47 membrane separations, additive manufacturing, 48 high-performance supercapacitors, 49,50 and delivery.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Tuning the Surface Area and Pore Size of Pyrene–Biphenyl-Coupled Hypercross-linked Polymers to Capture Toxic Organic Pollutants

Eluri

Sairam

Halpara

et al. 2022

ACS Appl. Polym. Mater.

View full text Add to dashboard Cite

Hypercross-linked polymers with suitable binding sites and porosities are promising materials for environmental remediation and removal of pollutants Herein, three porous organic hypercross-linked polymers (HCP-1, HCP-2, and HCP-3) are tailored by varying the molar ratio of pyrene (PY) and biphenyl precursors via a one-pot Friedel−Crafts alkylation reaction between pyrene (PY) and bis(1,4-dichloromethyl)biphenyl (BCB) using ferric chloride as a Lewis acid catalyst. HCP-1, HCP-2, and HCP-3 displayed surface areas of 296, 264, and 698 m 2 /g, respectively, with multiple micro-and mesopores in the polymeric network. Due to the variation in the surface area, the presence of abundant pores, and strong π−π interacting abilities, the obtained HCPs displayed excellent removal capacities toward pollutants of different natures like polyaromatic hydrocarbons [naphthalene (NAP)], persistent organic pollutants [dichlorodiphenyldichloroethylene (DDE)], pharmaceutical pollutants [carbamazepine (CAR)], and plasticizer micropollutants [bisphenol-A (BPA)]. Interestingly, HCP-3 showed a faster removal rate toward NAP (99% within 10 min) and DDE (95% within 10 min) at 25 °C. Though HCP-3 showed faster removal capacities toward NAP and DDE, HCP-1 and HCP-2 displayed the maximum uptake capacities for NAP as 455 mg/g and 527 mg/g, respectively, due to the presence of abundant complement π−π stacking led by PY and BCB units in the polymeric network. In contrast, HCP-3 showed better removal capacities toward CAR (130 mg/g) and BPA (99 mg/g) than other HCPs. It is worth mentioning that HCPs displayed very good NAP and DDE removal capacities over a wide pH range due to the pH-insensitive nature of pollutants and HCPs.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Tuning the Surface Area and Pore Size of Pyrene–Biphenyl-Coupled Hypercross-linked Polymers to Capture Toxic Organic Pollutants

Eluri

Sairam

Halpara

et al. 2022

ACS Appl. Polym. Mater.

View full text Add to dashboard Cite

show abstract

“…Also, from Kim et al, their reported the crossing linking agent play a key role on the morphology and porosity design of HCPs. By simply varying monomer to formaldehyde dimethylacetal (FDA) ratio, the diversity HCPs morphologies, such as nanospheres, nanofibers, and flower-shapes could be generated [55]. The high surface area and porous nature make these polymers exhibit outstanding adsorption capacity and pollutant remove ability.…”

Section: Template Free Methodsmentioning

confidence: 99%

Recent Advances in Nanofabrication of the Morphology-Controlled Hypercrosslinked Polymers

Song¹,

Zhang²,

Liu³

et al. 2021

MAHIG

View full text Add to dashboard Cite

Hypercrosslinked Polymers (HCPs) have received considerable attention in the field of catalysis, adsorption, separation, biomedical engineering, and energy storage/conversion, because of their permanent microporous structures and high surface areas. Up to now, various "bottom-up" and "top-down" methods have been reported to synthesize of the HCPs with diverse morphologies, and these morphologies have been demonstrated to play a significant role in various applications. In this review, we summarized the latest research in the design of morphology-controlled HCPs by using three kinds of main methods and we also emphasized on the template free solutions. Furthermore, the future developments and challenges for fabricating of morphology-controlled HCPs are also presented in this review.

show abstract

“…In some studies, changing the catalyst concentration impacted the porous polymer‘s molecular arrangement, resulting in crystalline and amorphous material and also modified the optical properties [19,20] . The above reports reveal that the properties of the CMPs can be readily modulated by adjusting the reaction parameters or the monomer ratios [21–23] . However, there are no reports available on fine‐tuning molecular structures of CMPs via modulation of reaction conditions to our knowledge.…”

Section: Introductionmentioning

confidence: 99%

“…[19,20] The above reports reveal that the properties of the CMPs can be readily modulated by adjusting the reaction parameters or the monomer ratios. [21][22][23] However, there are no reports available on fine-tuning molecular structures of CMPs via modulation of reaction conditions to our knowledge.…”

Section: Introductionmentioning

confidence: 99%

Acid‐Modulated Synthesis of Novel π‐Conjugated Microporous Polymers for Efficient Metal‐Free Photocatalytic Hydrogen Evolution

Bramhaiah

Bhattacharyya

et al. 2022

Chemistry A European J

View full text Add to dashboard Cite

Simple synthetic modifications that tune the molecular structures, thereby the properties of the molecules, are of topical interest. Herein, we report the synthesis of two novel cationic rosaniline-based conjugated microporous polymers (CMPs) from identical monomers via simple acid modulation (Acetic acid and BF 3 • Et 2 O). The condensation reaction of rosaniline with 2,4,6-triformylphloroglucinol in acetic acid renders β-ketoenamine-linked CMP (CMP-A) while changing the acid to BF 3 • Et 2 O, the linkages transform to enol and undergoes BF 2 -complexation, leading to boranil CMP (CMP-B). BF 2 -functionalities in boranil CMP significantly modified the optical and functional properties compared to β-ketoenamine-linked CMP. The cationic-delocalization along with the extended π-delocalization supported by chromophoric BF 2 -groups allow CMP-B to exhibit broad absorption spanning the visible to Near-Infrared region (NIR). The absorption red-edge of CMP-B appears around 1277 nm (optical band gap ~1.58 eV) while CMP-A displays at 981 nm (optical band gap ~1.83 eV). Most interestingly, as a photocatalyst, CMP-B catalyzes hydrogen evolution with a superior rate of 252 μmol g À 1 over CMP-A (100 μmol g À 1 ). It is about 2.5 times higher performance. The transient photocurrent measurements, electrochemical impedance data, and indepth mott-Schottky analysis demonstrate that the BF 2 -group in CMP-B generates photoinduced charge carriers and their migration towards the active sites for photocatalysis. These polymers show significant photocatalytic H 2 generation without any supportive metal co-catalyst. The BF 2 complexed building blocks are a unique class of metal-free photocatalysts for hydrogen evolution through green and costeffective approach.[a] M.

show abstract

Tunable construction of biphenyl-based porous polymeric nanostructures and their synergistically enhanced performance in pollutant adsorption and energy storage

Cited by 15 publications

References 71 publications

Tuning the Surface Area and Pore Size of Pyrene–Biphenyl-Coupled Hypercross-linked Polymers to Capture Toxic Organic Pollutants

Tuning the Surface Area and Pore Size of Pyrene–Biphenyl-Coupled Hypercross-linked Polymers to Capture Toxic Organic Pollutants

Recent Advances in Nanofabrication of the Morphology-Controlled Hypercrosslinked Polymers

Acid‐Modulated Synthesis of Novel π‐Conjugated Microporous Polymers for Efficient Metal‐Free Photocatalytic Hydrogen Evolution

Contact Info

Product

Resources

About