Triazine-based conjugated microporous polymers constructing triphenylamine and its derivatives with nitrogen as core for iodine adsorption and fluorescence sensing I2

Geng, Tong-Mou; Zhang, Weiyong; Zhu, Zongming; Kai, Xiaoming

doi:10.1016/j.micromeso.2018.07.004

Cited by 74 publications

(32 citation statements)

References 62 publications

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“…9b). The quenching coefficient (K sv ) for iodine was estimated to be 2.9 × 10 3 L mol −1 (S5), which is comparable with those reported for many POPs for fluorescence sensing of iodine 12,32,38 . An electron-transfer mechanism could explain the fluorescence quenching of the TALPOP.…”

Section: Resultssupporting

confidence: 77%

“…The high number of basic nitrogen sites on the triazine unit enhances the uptake capacity that originates from the formation of charge-transfer complexes of nitrogen-iodine (donor–acceptor) systems formed during iodine adsorption on the polymers 7 , 12 , 15 , 36 . Geng et al constructed a series of novel triazine-based conjugated microprous polymers (TCMPs) applying the Friedel–Crafts polymerization reactions 12 , 32 , 37 , 38 . The TCMPs showed remarkable iodine uptake and exhibited high detection sensitivity toward nitroaromatic compounds.…”

Section: Introductionmentioning

confidence: 99%

“…More recently, Pan et al developed N-and S-rich covalent organic framework (COFs) possessing high iodine uptake of 276 wt.% 29 . Triazine-based conjugated polymers have also been reported to have respectable iodine uptake, presumably due to their nitrogen-rich nature 4,15,[30][31][32][33][34][35] . The high number of basic nitrogen sites on the triazine unit enhances the uptake capacity that originates from the formation of charge-transfer complexes of nitrogen-iodine (donor-acceptor) systems formed during iodine adsorption on the polymers 7,12,15,36 .…”

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confidence: 99%

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Fluorescent aminal linked porous organic polymer for reversible iodine capture and sensing

Sabri

Al‐Sayah

Sen

et al. 2020

Sci Rep

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A novel triazene-anthracene-based fluorescent aminal linked porous organic polymer (TALPOP) was prepared via metal free-Schiff base polycondensation reaction of 9,10-bis-(4,6-diamino-S-triazin-2-yl)anthracene and 2-furaldehyde. The polymer has exceptional chemical and thermal stabilities and exhibit good porosity with Brunauer–Emmett–Teller surface area of 401 m2g−1. The combination of such porosity along with the highly conjugated heteroatom-rich framework enabled the polymer to exhibit exceptional iodine vapor uptake of up to 314 wt % and reversible iodine adsorption in solution. Because of the inclusion of the anthracene moieties, the TALPOP exhibited excellent detection sensitivity towards iodine via florescence quenching with Ksv value of 2.9 × 103 L mol−1. The cost effective TALPOP along with its high uptake and sensing of iodine, make it an ideal material for environmental remediation.

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Section: Resultssupporting

confidence: 77%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Fluorescent aminal linked porous organic polymer for reversible iodine capture and sensing

Sabri

Al‐Sayah

Sen

et al. 2020

Sci Rep

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“…Among them, inorganic adsorbents, 7,8 such as ion-exchange zeolites 9,12,13 and silver-functionalized silica aerogels, 10,11 usually exhibit high cost, low uptake capacities and instability toward water and moisture. In recent years, metal-organic frameworks (MOFs) [14][15][16][17][18][19][20] and porous organic polymers (POPs), [21][22][23][24][25] which include conjugated microporous polymers (CMPs), 25,26 covalent triazine frameworks (CTFs), 27 charged porous aromatic frameworks (PAFs) 21,28,29 and covalent organic frameworks (COFs), 24,[30][31][32][33][34][35][36][37][38][39][40][41] have attracted a lot of attention for worthwhile iodine capture. POPs have been found to exhibit high potential for iodine capture and storage due to their high surface area, and the high interaction between adsorbents and iodine.…”

Section: Introductionmentioning

confidence: 99%

CN linked covalent organic framework for the efficient adsorption of iodine in vapor and solution

et al. 2021

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“…However, few studies have been conducted on bifunctional POPs with radioactive iodine enrichment and nonradioactive iodine detection. [ 19–21 ]…”

Section: Introductionmentioning

confidence: 99%

Flexible Oxygen‐Bridged Porous Organic Polymers for Adsorping and Fluorescence Sensing Iodine and the Formation of Liquid Complexes of POPs‐(Poly)Iodide Anions

Tong-mou

Liu

et al. 2021

Macro Materials & Eng

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Three flexible oxygen‐bridged porous organic polymers (TPG, HCCPA, and HPG) have been synthesized by nucleophilic substitution polymerization reactions. The three POPs display efficient and reversible adsorption of radioactive I2 in vapor and solution. In iodine vapor at 350 K, the maximum iodine adsorption capacities of TPG, HCCPA, and HPG are 5.29, 4.08, and 1.63 g g−1, respectively. The strong affinities for I2 are mainly due to the charge transfer of the POPs to iodine. Interestingly, with the decrease of iodine adsorption, charge transfer complexes of TPG, HCCPA, and HPG exhibit liquid, semi‐solid, and solid states, respectively. Furthermore, the three POPs have been found to fluorescently detect molecular iodine. The S–V quenching constants of TPG, HCCPA, and HPG are 2.01 × 104, 1.14 × 104, and 1.44 × 103 L mol−1, respectively. Their sensitivities decrease with the decrease of iodine adsorption. Pleasingly, HCCPA can sense molecular iodine by fluorescence in aqueous solution. Most probably, this is the first example of POPs used for fluorescent sensing molecular iodine in aqueous solution. Both TPG and HCCPA act as efficient adsorbents and chemical sensors of iodine.

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Triazine-based conjugated microporous polymers constructing triphenylamine and its derivatives with nitrogen as core for iodine adsorption and fluorescence sensing I2

Cited by 74 publications

References 62 publications

Fluorescent aminal linked porous organic polymer for reversible iodine capture and sensing

Fluorescent aminal linked porous organic polymer for reversible iodine capture and sensing

CN linked covalent organic framework for the efficient adsorption of iodine in vapor and solution

Flexible Oxygen‐Bridged Porous Organic Polymers for Adsorping and Fluorescence Sensing Iodine and the Formation of Liquid Complexes of POPs‐(Poly)Iodide Anions

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