A Fluorescent Zn(II) Coordination Polymer: Sensitive Detection of Cr2O72− in Water and Prevention Activity On the Deep Vein Thrombosis in Orthopedic Nursing
Authors: Dai-Hong Ji
Yu Zhou
Yan Zhang
Li Cui
Yu Liu
Journal: Journal of Fluorescence (2020)
Discipline: CHEMISTRY
Keywords: Cr2O72− detection; Deep vein thrombosis; Fluorescence; Zn(II)-complex.
Affiliations: Department of Orthopaedics, Affiliated Zhongshan Hospital of Dalian University, Dalian, Liaoning, China., Nursing Department, Affiliated Zhongshan Hospital of Dalian University, Dalian, Liaoning, China., Nursing Department, Affiliated Zhongshan Hospital of Dalian University, Dalian, Liaoning, China. .

Abstract:  A novel coordination polymer (CP) based on Zn(II) of [Zn(tptc)0.5(bpy)(H2O)]n (1) was synthesized through utilizing the 2,2'-bipyridine (bpy) chelating N donors and p-terphenyl-2,2'',5'',5'''-tetracarboxylate acid (H4tptc) as the co-ligands. The measurements of the fluorescence were implemented for the complex 1 in solution and solid state, and the result reveals that 1 has a strong fluorescence and it is a sensory material with great development space to determine the trace Cr2O72- (with the detection limit of 36 ppb) in the water solutions via applying the fluorescence quenching effect. As the common disease in the orthopedic nursing, the deep vein thrombosis was the objective in this research. The weigh and length of the thrombus in the animals were measured and analyzed. In addition to this, the inflammatory response in the deep vein thrombosis animal was evaluated by RT-PCR. Molecular docking results indicate that only the carboxyl group could provide polar oxygen atoms for the formed hydrogen bonds to the protein. 

Retracted: No

PubPeer comments:
 This is another  floor-was-AND-a-dessert-topping paper. In this case the dessert is treating DVT, which was induced in rats through  vena cava ligation (presumably involving surgery) and treated through injection of an insoluble substance into unspecified parts of the rats, at an unspecified time after surgery, with an unspecified period of treatment.  The inferior vena cava ligation was made in the animal to induce the DVT animal model, and after that, we injected the compound into rats for the treatment at 1 mg kg, 2 mg kg, 5 mg kg concentration. After this compound treatment, the weight and length of the thrombus in the animal models was measured at least three times. Do the authors mean that they measured **each thrombus** three times, presumably after surgery? One hopes that the measurements stayed the same, unless they sewed the thrombus back into the animal and measured it again later. Perhaps this is a roundabout way of saying that at least three rats were subjected to surgery injections. The **number of rats** is not specified either. , 
  Due to their unique structures and their topological structures, as well as their extensive potential applications in drug delivery, gas separation and storage, sensing as well as catalysis, [coordination polymers] have been developed into a significant class in recent few years [4u20139]. For the purposes of this whole oeuvre of papers,  Coordination polymer includes inorganic ceramics, ZnO coatings, and composting technique. - [4]. Du H, Ma C, Ma W, Wang H (2018) **Microstructure evolution and dielectric properties of Ce-doped SrBi4Ti4O15 ceramics synthesized via glycine-nitrate process**. Process Appl Ceram 12:303u2013312 - [7]. Kuang Y, Zhao J, Gao Y, Lu C, Luo S, Sun Y, Zhang D (2020) **Enhanced hydrogen production from food waste dark fermentation by potassium ferrate pretreatment**. Environ Sci Pollut R 27:18145u201318156 - [9]. Zhang D, Wang MM, Jiang N, Liu Y, Yu XN, Zhang HB (2020) **Electrochemical corrosion behavior of Ni-doped ZnO thin film coated on low carbon steel substrate in 3.5% NaCl solution**. Int J Electrochem Sci 15:4117u20134126 , 
 The authors wrote u2018triumphantly synthesisedu2019 instead of the standard u2018successfully synthesised.u2019 _Hoya camphorifolia_ noticed that this [tortured phrase] is one hallmark of [a prolific coordination-polymer papermill] . ![file] Found with the [_Problematic Paper Screener_] . , 
 We learn from Table 1 that the crystal structure results and parameters were deposited in the CCDC database, with deposition number CCDC 2,009,940. This is news to the CCDC database (which contains no matching file). ,