Theoretical investigation of triazine based a star shape pyrrole monomer

Kiraz, Aslı Öztürk; Kara, İzzet; Ak, Metin; Çetişli, Halil; Kolsuz, Nuri

doi:10.1080/10601325.2017.1250310

Cited by 5 publications

(2 citation statements)

References 24 publications

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“…Moreover, the K d / K HW values of all three pollutants onto CTF-m were much higher than those onto CTF-1 and CTF-2, suggesting that the surface energy sites of CTF-m were most available (“probed”) for pollutant molecules. That could be derived from the modification of the electron properties by the intrinsic defects of CTF-m. Analogous to the conventional “foreign-doping”, the intrinsic defect-induced “self-doping”, which provided a portion of unpaired π electrons locally and effectively improved the ability of the π donor electrons, consequently improving the pollutant adsorption through π–π EDA interaction. , In addition, the nitrogen atoms in the pyrrolic units were less electron-deficient than those in the triazine units, which enhanced their interaction with the hydroxyl groups in PHE, which could be the reason for the higher PHE adsorption capacity onto CTF-m than CTF-1 and CTF-2. More importantly, the introduction of defects caused the adsorption ability of CTF-m to be no longer subject to its specific surface area.…”

Section: Resultsmentioning

confidence: 99%

Defect-Abundant Covalent Triazine Frameworks as Sunlight-Driven Self-Cleaning Adsorbents for Volatile Aromatic Pollutants in Water

Shen

Zhu

et al. 2019

Environ. Sci. Technol.

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Covalent triazine frameworks (CTFs) with high adsorption potential and photocatalytic ability features are expected to be designed as a new class of adsorbents that can regenerate themselves just by harnessing sunlight. To simultaneously improve both the adsorption and photocatalytic regeneration performance, a defect-abundant CTF-m was designed and tuned effectively by varying the lengths of benzene ring chains incorporated into the CTF backbone. It has been demonstrated that two kinds of defects in terms of broken benzene rings and pyrrole nitrogen were newly generated, other than the normal benzene rings and triazine units in the CTF-m skeleton. Benefiting from these defects, the adsorption sites with high energy for adsorbing volatile aromatic pollutants were significantly increased, which are reflected by higher saturated adsorption capacities of CTF-m (3.026 mmol/g for benzene (BEN), 1.490 mmol/g for naphthalene (NAP), and 0.863 mmol/g for phenol (PHE)) compared with those of CTF-1 and CTF-2. Furthermore, these defects narrowed the band structure and facilitated the separation of photogenerated charge carries, thus promoting photocatalytic regeneration. The percentage of CTF-m regenerated was still higher than 90% in the fourth cycle. These experimental results, together with the density functional theory (DFT) studies, soundly corroborated that the defects could optimize the adsorption and regeneration property of CTF-m. The present work highlights the potential of fabrication of defective CTFs as solar-driven self-cleaning adsorbents to remove pollutants from water.

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Section: Resultsmentioning

confidence: 99%

Defect-Abundant Covalent Triazine Frameworks as Sunlight-Driven Self-Cleaning Adsorbents for Volatile Aromatic Pollutants in Water

Shen

Zhu

et al. 2019

Environ. Sci. Technol.

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“…Star-shaped polymers [1][2][3] have drawn considerable interest in research throughout the years owing to their unique architectures and its various properties. Based on the core and functionalization of the peripheral units it is likely to acheieve star-shaped molecules with different geometry and symmetry.…”

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confidence: 99%

Asymmetric Star-Shaped Functionalized Triazine Architecture and Its Electrochromic Device Application

Karatas¹,

Güzel²,

Ak³

2017

J. Electrochem. Soc.

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A new asymmetric functionalized star shaped triazine derivative, namely 2,2'-((6-(quinolin-8-yloxy)-1,3,5-triazine-2,4diyl)bis(oxy))bis(9H carbazole) (TQC) was synthesized from 2-hydroxy carbazole and 8-hydroxyquinoline. The electrically conductive PTQC film was synthesized via electropolymerization on ITO in a 0.1 M lithium perchlorate/acetonitrile (LiClO 4 /ACN) electrolyte-solvent couple. 1 H-NMR, FTIR and elemental analysis were used to analyze the structure of the TQC. Both electrochemical and spectroelectrochemical studies of the polymer were examined. PTQC revealed color changes between transparent and dark green in the reduced and oxidized states, respectively. Dual type polymer electrochromic devices (ECDs) based on PTQC and poly(3,4-ethylenedioxythiophene) (PEDOT) have been constructed. A potential range of 0 to 2.5 V was found to be proper for working the PTQC/PEDOT device between transparent and blue colors. The spectroelectrochemistry, electrochromic switching, open circuit memory and stability of the device were studied. The properties of the electrochromic device have been investigated such as spectroelectrochemistry, electrochromic switching, stability and open circuit memory.

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N,S-heterocyclic carbene containing benzothiazol-2-ylidene-Ru(II) and Pd(II) new complexes functionalized with butyl linked carbazole moiety: Synthesis, characterization and their catalytic efficiency and electropolymerizations

Karakaş

Güzel

et al. 2022

European Polymer Journal

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Theoretical investigation of triazine based a star shape pyrrole monomer

Cited by 5 publications

References 24 publications

Defect-Abundant Covalent Triazine Frameworks as Sunlight-Driven Self-Cleaning Adsorbents for Volatile Aromatic Pollutants in Water

Defect-Abundant Covalent Triazine Frameworks as Sunlight-Driven Self-Cleaning Adsorbents for Volatile Aromatic Pollutants in Water

Asymmetric Star-Shaped Functionalized Triazine Architecture and Its Electrochromic Device Application

N,S-heterocyclic carbene containing benzothiazol-2-ylidene-Ru(II) and Pd(II) new complexes functionalized with butyl linked carbazole moiety: Synthesis, characterization and their catalytic efficiency and electropolymerizations

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