One-step rapid synthesis of single thymine-templated fluorescent copper nanoclusters for “turn on” detection of Mn2+

2017 ◽  
Vol 9 (17) ◽  
pp. 2590-2595 ◽  
Author(s):  
Bingyan Han ◽  
Rongchao Xiang ◽  
Xufen Hou ◽  
Mingbo Yu ◽  
Tingting Peng ◽  
...  

Single base T was confirmed to be a template to synthesize water-soluble copper nanoclusters for the first time, which was successfully used to detect Mn2+.

2011 ◽  
Vol 11 (5) ◽  
pp. 4039-4045 ◽  
Author(s):  
Nai-Xin Wang ◽  
Yan-Qin Wang ◽  
Xi-Wen He ◽  
Wen-You Li

The Analyst ◽  
2014 ◽  
Vol 139 (12) ◽  
pp. 2990-2993 ◽  
Author(s):  
Wei Wang ◽  
Fei Leng ◽  
Lei Zhan ◽  
Yong Chang ◽  
Xiao Xi Yang ◽  
...  

A one-step synthesis of water soluble and pH-responsive trypsin-stabilized fluorescent CuNCs was reported without using additional protective or reducing agents.


Sensors ◽  
2020 ◽  
Vol 20 (16) ◽  
pp. 4488
Author(s):  
Gregory E. Fernandes ◽  
Ya-Wen Chang ◽  
Akash Sharma ◽  
Sarah Tutt

We report a simple and versatile approach to assemble sensitive and selective fluorescence “turn-on” sensors for cyanide by combining three off-the-shelf materials; namely fluorescent dye, 1-vinyl imidazole polymer, and cupric chloride. The cyanide-sensing species is a non-fluorescent fluorophore-polymer-Cu2+ complex; which forms as a result of the imidazole polymer’s ability to bind both fluorophore and fluorescence quencher (Cu2+). Cyanide removes Cu2+ from these complexes; thereby “turning-on” sensor fluorescence. These sensors are water-soluble and have a detection limit of ~2.5 μM (CN−) in water. Our ternary complex-based sensing approach also enables facile emission tuning; we demonstrate the convenient, synthesis-free preparation of blue and green-emitting sensors using distyrylbiphenyl and fluorescein fluorophores, respectively. Furthermore; these ternary complexes are easily immobilized using agarose to create cyanide-sensing hydrogels; which are then used in a simple; novel microdiffusion apparatus to achieve interference-free cyanide analysis of aqueous media. The present study provides an inexpensive approach for portable; interference-free cyanide detection.


Author(s):  
Ole V. Petersen ◽  
Alexander P. Khomyakov ◽  
Henning Sørensen

NOTE: This article was published in a former series of GEUS Bulletin. Please use the original series name when citing this article, for example: Petersen, O. V., Khomyakov, A. P., & Henning. (2001). Natrophosphate from the Ilímaussaq alkaline complex, South Greenland. Geology of Greenland Survey Bulletin, 190, 139-141. https://doi.org/10.34194/ggub.v190.5184 _______________ The rare mineral natrophosphate has been identified for the first time in the Ilímaussaq alkaline complex in a drill core from the Kvanefjeld area. It occurs sparsely in zoned veinlets with cores of natrophosphate and borders of fibrous trona. The natrophosphate is more or less smoky, transparent and unaltered. The refractive index n = 1.448 ± 0.005 is low compared to that given for the material from the type locality, Khibina alkaline complex, Kola Peninsula; the unit cell parameter a = 27.76 ± 0.05 Å is in excellent agreement with that given for the material from the type locality. The veins occur in hyper-agpaitic naujakasite lujavrite; villiaumite is an associated mineral. Only a few water-soluble minerals have so far been found in the Ilímaussaq alkaline complex compared to the wealth of such minerals in the Khibina and Lovozero alkaline complexes. This is possibly at least partly due to lack of necessary precautions during sampling.


Coatings ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 783
Author(s):  
Ying Duan ◽  
Chen Wang ◽  
Jian Hao ◽  
Yang Jiao ◽  
Yanchao Xu ◽  
...  

In this paper, we propose for the first time the synthesis of α-MoO3 nanorods in a one-step procedure at mild temperatures. By changing the growth parameters, the microstructure and controllable morphology of the resulting products can be customized. The average diameter of the as-prepared nanorods is about 200 nm. The electrochromic and capacitance properties of the synthesized products were studied. The results show that the electrochromic properties of α-MoO3 nanorods at 550 nm have 67% high transmission contrast, good cycle stability and fast response time. The MoO3 nanorods also exhibit a stable supercapacitor performance with 98.5% capacitance retention after 10,000 cycles. Although current density varies sequentially, the nanostructure always exhibits a stable capacitor to maintain 100%. These results indicate the as-prepared MoO3 nanorods may be good candidates for applications in electrochromic devices and supercapacitors.


RSC Advances ◽  
2015 ◽  
Vol 5 (60) ◽  
pp. 48391-48398 ◽  
Author(s):  
Judy Gopal ◽  
Manikandan Muthu ◽  
Se-Chul Chun
Keyword(s):  

One step ultrasonication for direct recovery of water soluble nanocurcumin from turmeric.


2021 ◽  
Vol 12 (5) ◽  
pp. 645-649
Author(s):  
Yu Gu ◽  
Yuqing Qiao ◽  
Yusen Meng ◽  
Ming Yu ◽  
Bowu Zhang ◽  
...  

Herein, we report for the first time the synthesis of polypyrrole copolymers with good solvent-dispersibility under gamma-ray irradiation at room temperature in air.


2019 ◽  
Vol 55 (12) ◽  
pp. 1758-1761 ◽  
Author(s):  
Jun-Bin Li ◽  
Qianqian Wang ◽  
Hong-Wen Liu ◽  
Xia Yin ◽  
Xiao-Xiao Hu ◽  
...  
Keyword(s):  
Turn On ◽  

A turn-on bioluminescent probe (BP-HNO) that is free of autofluorescence for bioimaging nitroxyl in live cells and mice is reported for the first time.


2014 ◽  
Vol 56 ◽  
pp. 58-63 ◽  
Author(s):  
Jian Xu ◽  
Qian Li ◽  
Ying Yue ◽  
Yong Guo ◽  
Shijun Shao

Polymer ◽  
2013 ◽  
Vol 54 (4) ◽  
pp. 1323-1328 ◽  
Author(s):  
Seongwon Seo ◽  
Daigeun Kim ◽  
Geunseok Jang ◽  
Jongho Kim ◽  
Taek Seung Lee

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