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An Integrated Chemiluminescence Microreactor for Ultrastrong and Long-Lasting Light Emission.

ABSTRACT: A porous metal-organic framework [Ba(H₂ L^{LOMe 2-} )·DMF·H₂O]·2DMF (UPC-2) (H₄ L^LOMe = 4',4'''-(2,3,6,7-tetramethoxyanthracene-9,10-diyl)bis([1,1'-biphenyl]-3,5-dicarbo-xylic acid N,N-Dimethylformamide [DMF]), which can act as an excellent chemiluminescence microreactor, is designed and constructed. In the framework of UPC-2, the catalytic Ba cluster and electron-rich anthracene fluorescent centers are fixed and interconnected in an orderly fashion, and this can shorten the energy transfer path and weaken the relaxation of the chemiluminescence process. Meanwhile, the rhombic channels of UPC-2 can provide a proper diffusion ratio of reactants to support a stable and continuous energy supply. The UPC-2 chemiluminescence microreactor exhibits an ultrastrong and long-lasting light emission, which possesses potential application in emergency lights and biological mapping. The concept of the chemiluminescence microreactor and its construction using a metal-organic framework as a platform will promote further research in the design and fabrication of functional MOFs for chemiluminescence applications.

SUBMITTER: Xiao Z

PROVIDER: S-EPMC7403964 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature

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An Integrated Chemiluminescence Microreactor for Ultrastrong and Long-Lasting Light Emission.

Xiao Zhenyu Z Wang Yutong Y Xu Ben B Du Shunfu S Fan Weidong W Cao Dongwei D Deng Ying Y Zhang Liangliang L Wang Lei L Sun Daofeng D

Advanced science (Weinheim, Baden-Wurttemberg, Germany) 20200617 15

A porous metal-organic framework [Ba(H2 LLOMe 2- )·DMF·H2O]·2DMF (UPC-2) (H4 LLOMe = 4',4'''-(2,3,6,7-tetramethoxyanthracene-9,10-diyl)bis([1,1'-biphenyl]-3,5-dicarbo-xylic acid N,N-Dimethylformamide [DMF]), which can act as an excellent chemiluminescence microreactor, is designed and constructed. In the framework of UPC-2, the catalytic Ba cluster and electron-rich anthracene fluorescent centers are fixed and int ...[more]

PMID: 32775151

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Project description:Chemiluminescence assays have shown great advantages compared with other optical techniques. Gold nanoparticles have drawn much attention in chemiluminescence analysis systems as an enzyme-free catalyst. The catalytic activity of gold nanoparticles for chemiluminescence sensing depends on size, shape and the surface charge property, which is hard to characterize in batches. As there is no positive or negative correlation between chemiluminescence signals and sizes of gold nanoparticles, the best way to get optimal gold nanoparticles is to control the reaction conditions via online chemiluminescence sensing systems. Therefore, a new method was developed for online synthesis of gold nanoparticles with a three-dimension hydrodynamic focusing microreactor, directly coupled with a microfluidic chemiluminescence sensing chip, which was coupled to a charge-coupled device camera for direct catalytical characterization of gold nanoparticles. All operations were performed in an automatic way with a program controlled by Matlab. Gold nanoparticles were synthesized through a single-phase reaction using glucose as a reducing agent and stabilizer at room temperature. The property of gold nanoparticles was easily controlled with the three-dimension microreactor during synthesis. The catalyst property of synthesized gold nanoparticles was characterized in a luminol-NaOCl chemiluminescence system. After optimizing parameters of synthesis, the chemiluminescence signal was enhanced to a factor of 171. The gold nanoparticles synthesized under optimal conditions for the luminol-NaOCl system were stable for at least one month. To further investigate the catalytic activity of synthesized gold nanoparticles in various situations, two methods were used to change the property of gold nanoparticles. After adding a certain amount of salt (NaCl), gold nanoparticles aggregated with a changed surface charge property and the catalytic activity was greatly enhanced. Glutathione was used as an example of molecules with thiol groups which interact with gold nanoparticles and reduce the catalytic activity. The chemiluminescence intensity was reduced by 98.9%. Therefore, we could show that using a microreactor for gold nanoparticles synthesis and direct coupling with microfluidic chemiluminescence sensing offers a promising monitoring method to find the best synthesis condition of gold nanoparticles for catalytic activity.

Dataset Information

An Integrated Chemiluminescence Microreactor for Ultrastrong and Long-Lasting Light Emission.

Publications

An Integrated Chemiluminescence Microreactor for Ultrastrong and Long-Lasting Light Emission.

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