Two 3D Zn(II)/Co(II)-CPs as fluorescent sensors for turn-on and red-shift sensing of tryptophan and norfloxacin

Journal of Molecular Structure, Journal Year: 2024, Volume and Issue: 1305, P. 137821 - 137821

Published: Feb. 16, 2024

Language: Английский

---

Two Water-Stable Zn(II) Coordination Polymers as Luminescent Sensors for Detection of Uric Acid in Serum, MnO₄^–, and Cr(VI) Oxo-Anions in Tap Water

Crystal Growth & Design, Journal Year: 2024, Volume and Issue: 24(12), P. 5335 - 5348

Published: May 31, 2024

Two novel coordination polymers (CPs), [Zn2(μ-OH)2(μ-1,5-NDS-κ2O:O′)(μ-Mbimb-κ2N:N′)]n (1) and {[Zn(CH3COO-κ1O)(μ-bbimb-κ2N:N′)1.5](1,5-NDS)0.5}n (2), were synthesized by hydrothermal reaction of Zn(Ac)2·2H2O with 1,5-naphthalenedisulfonate (1,5-NDS2–), 1,4-bis(2-methyl-1H-imidazole-1-yl)butane (Mbimb), or 1,4-bis(1H-benzimidazol-1-yl)butane (bbimb). In the crystal structure 1, Zn(II) centers are connected μ-OH– anions into an infinite –[Zn(OH)]n– chain, which is further linked Mbimb 1,5-NDS2– to form a 3D dia network. 2, bbimb ligands 2D (6,3) brick wall layer Ac– as dangling arms threaded space adjacent layers, resulting in → polythreading structure. Luminescent studies reveal that both CPs have excellent luminescence stability can selectively detect uric acid (UA), MnO4–, Cr(VI) oxo-anions aqueous solutions high quenching efficiency. The limits detection toward UA, CrO42–, Cr2O72– 0.46, 4.33, 5.50, 1.60 μM for CP 1 5.63, 2.84, 7.60, 2.90 respectively. Moreover, two also serve sensors UA serum MnO4– tap water. luminescent films prepared visual naked eye.

Language: Английский

---

Flexible Hexacarboxylate-Based Cobalt Metal–Organic Framework for the Turn-On/Off Detection of Cr³⁺, Al³⁺, Fe³⁺, and Phenylglyoxylic Acid

Crystal Growth & Design, Journal Year: 2024, Volume and Issue: 24(5), P. 2064 - 2074

Published: Feb. 14, 2024

Two novel cobalt(II)-based metal–organic frameworks (MOFs), namely, {[Co3(TTHA)(bibp)2(H2O)]}n (1) and {[Co2(H2TTHA)(bidpe)2]}n (2) (H6TTHA = 1,3,5-triazine-2,4,6-triamine hexaacetic acid, bibp 4,4′-bis(imidazolyl)biphenyl, bidpe 4,4-bis(imidazoly)diphenyl ether), were hydrothermally prepared based on the mixed ligands strategy fully characterized. Due to rich coordination modes of carboxylic acid ligand, 1 possesses a three-dimensional (3D) structure with two secondary building units ([Co3N3(CO2)4(CO)4] [Co2N2(CO2)4]), whereas 2 exhibits tangled one-dimensional (1D) chain further forms 3D assembled by weak interactions. Interestingly, can serve as an unusual turn-on sensor for detection trivalent metal ions (Al3+, Cr3+, Fe3+) in aqueous solution low limit, shows high-sensitivity fluorescence turn-off behavior toward polystyrene styrene biomarker phenylglyoxylic (PGA). Significantly, effectively sense PGA complicated biological environments. The mechanism study indicated that absorbance-caused enhancement is responsible phenomena induced ions, while occurrence structural collapse leads effect PGA.

Language: Английский

---

Efficient Luminescence Detection of Phenylglyoxylic Acid over Two Novel Zinc-Based MOFs Constructed by Aromatic Tetracarboxylic Acids

Crystal Growth & Design, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 13, 2025

Phenylglyoxylic acid (PGA), the metabolite of styrene after its invasion into human body, must be monitored conveniently and accurately. Herein, two zinc-based metal–organic frameworks {[Zn(H2L)bimb]}n (Zn-1) {[Zn2(H2L)2bipd]}n (Zn-2) [H4L = 1,2,4,5-tetrakis(4-carboxyphenyl)-3,6-dimethyl-benzene, bimb 1,1-(1,4-butanediyl)bis(imidazole), bipd 3,5-bis(1-imidazole)pyridine] had been obtained by solvothermal method could used for selective detection PGA with an extremely low limit. Single-crystal X-ray diffraction analyses revealed that Zn-1 exhibits a 2D topological framework point symbol (66), whereas Zn-2 shows (324.436.56) topology. Fluorescence proved obvious quenching effects on PGA, body. Impressively, not only gave short response times (less than 5 s) but also exhibited relatively limit detections in water simulated urine (1.44, 0.50 1.63, 1.14 μM, respectively). Meanwhile, high stability, excellent anti-interference ability, recyclability, making them promising sensors practical PGA. Moreover, density functional theory calculation showed photoinduced electron transfer mechanism, resulting fluorescence quenching; meanwhile, photocompetitive absorption processes ligands can affect emission Zn-2.

Language: Английский

---

Stable Co(II)-based coordination polymer as fluorescence sensor for the discriminative sensing of biomarker methylmalonic acid

Talanta, Journal Year: 2023, Volume and Issue: 265, P. 124803 - 124803

Published: June 10, 2023

Language: Английский

---

A novel Co(ii)-based MOF with selective fluorescence as a turn-on sensor for biomarker methylmalonic acid

CrystEngComm, Journal Year: 2023, Volume and Issue: 25(29), P. 4120 - 4125

Published: Jan. 1, 2023

A Co( ii )-based MOF exhibits a highly sensitive and selective detection to biomarker methylmalonic acid with low limit favorable recycling performance.

Language: Английский

---

First Crystallographic Evidence of Polarity-Assisted Pseudohalides Controllable Heteroaldazine-Based Coordination Polymers: A New Tributary in Low Level Recognition of Explosive from Real-Day Matrices

Crystal Growth & Design, Journal Year: 2024, Volume and Issue: 24(13), P. 5781 - 5793

Published: June 14, 2024

Polarity-assisting pseudohalide-controlled self-assembly of coordination polymers (CPs) is immense significance for structural tunability and quite necessary exploration the links between structure properties. Herein, we have synthesized two polarity-assisting CPs, CPCd-1 CPCd-2 ({[(Cd2(L1)3(NCS)4].CHCl3.CH3CN}n {[Cd(L1)2(N(CN)2)2].CH3CN}n) using newly developed heteroaldazine-based ligand, L1 (L1 = 1-(Z-(Z-(quinolin-4-ylmethylene) hydrazono) methyl) naphthalen-2-ol) at room temperature systematically characterized through single-crystal X-ray diffraction (SC-XRD) methodology. Interestingly, strong continuous π···π intermolecular interactions influence both CPs to ensure high luminescence properties in solvent medium solid phase. Further, these luminous been utilized discriminating recognition lethal explosive 2,4,6-trinitrophenol (TNP). Notably, shows a lower detection limit (193 ppb) toward TNP than (the 401 ppb), which also confirmed by theoretical scenario. In addition, sensing mechanism established via PET-ICT-π···π interaction pathways. Both numerous practical applications ascertained as innovative ones environmental domains. This type with quinoline-napthaldehyde moieties scanty literature that can detect entirely from aqueous

Language: Английский

---

Two 3D Co(II) MOFs of 1,5-naphthalenedisulfonate and bis(benzimidazole) ligands for luminescent sensing of Fe3+ and Cr2O72−

Polyhedron, Journal Year: 2023, Volume and Issue: 244, P. 116627 - 116627

Published: Aug. 28, 2023

Language: Английский

---

A dysprosium(iii)-based triple helical-like complex as a turn-on/off fluorescence sensor for Al(iii) and 4,5-dimethyl-2-nitroaniline

Dalton Transactions, Journal Year: 2024, Volume and Issue: 53(12), P. 5544 - 5552

Published: Jan. 1, 2024

A dysprosium( iii )-based triple helical-like complex was design synthesized as a turn-on/off fluorescence sensor for Al( ) and 4,5-dimethyl-2-nitroaniline with high selectivity, sensitivity, anti-interference ability.

Language: Английский

---

Cd(II)-Based Coordination Polymer as a Multiresponsive Fluorescent Sensor for Efficiently Detecting Zn²⁺, Cr₂O₇^2–, and Phenylglyoxylic Acid

Crystal Growth & Design, Journal Year: 2024, Volume and Issue: 24(17), P. 7212 - 7221

Published: Aug. 15, 2024

The concentration of Zn2+ is closely related to the ecological environment and physical health must be monitored conveniently accurately. Herein, a novel coordination polymer, namely, {[Cd2L2(bpy)2]·H2O·0.25DMF}n (CP-1, bpy = 2,2′-bipyridine, H2L 5-(1H-1,2,4-triazole-1-yl)-1,3-phthalic acid) was synthesized under solvothermal conditions can used for selective detection with an extremely low limit. Single-crystal X-ray diffraction analyses revealed that CP-1 exhibits interspersed two-dimensional (2D) layer further constitutes 3D by weak interactions. Fluorescence experiments showed as excellent fluorescent sensor selectively detecting limit 0.073 μM. In addition, also efficient Cr2O72– phenylglyoxylic acid (PGA) limits 0.68 1.59 μM respectively. Moreover, mechanism study turn-on behavior attributed absorbance-induced enhancement (ACE), turn-off PGA "internal filtering effect" (IFE) combined effect photoinduced electron transfer (PET) competitive absorption,

Language: Английский

---