Colorimetric sensing of melamine using colloidal magnetically assembled molecularly imprinted photonic crystals

RSC Advances ◽  
2016 ◽  
Vol 6 (87) ◽  
pp. 83663-83667 ◽  
Author(s):  
Aimei You ◽  
Yuhua Cao ◽  
Guangqun Cao
Keyword(s):  
Photonic Crystals ◽  
Colorimetric Sensing ◽  
Molecularly Imprinted ◽  
Optical Signals ◽  
Magnetic Assembly

A colorimetric colloidal MIPC sensor was constructed by the magnetic assembly of MMIP colloids, it could directly transmit the stimuli from the adsorption of MEL into visually perceptible optical signals.

scholarly journals Colorimetric Sensing of Amoxicillin Facilitated by Molecularly Imprinted Polymers

Polymers ◽  
2021 ◽  
Vol 13 (13) ◽  
pp. 2221
Author(s):  
Joseph W Lowdon ◽  
Hanne Diliën ◽  
Bart van Grinsven ◽  
Kasper Eersels ◽  
Thomas J. Cleij
Keyword(s):  
Binding Capacity ◽  
Colorimetric Detection ◽  
Bulk Polymerization ◽  
Colorimetric Sensing ◽  
Initial Development ◽  
Molecularly Imprinted ◽  
Synthetic Receptor ◽  
Displacement Assay ◽  
Size And Morphology ◽  
Task Sets

The scope of the presented research orientates itself towards the development of a Molecularly Imprinted Polymer (MIP)-based dye displacement assay for the colorimetric detection of the antibiotic amoxicillin in aqueous medium. With this in mind, the initial development of an MIP capable of such a task sets focus on monolithic bulk polymerization to assess monomer/crosslinker combinations that have potential towards the binding of amoxicillin. The best performing composition (based on specificity and binding capacity) is utilized in the synthesis of MIP particles by emulsion polymerization, yielding particles that prove to be more homogenous in size and morphology compared to that of the crushed monolithic MIP, which is an essential trait when it comes to the accuracy of the resulting assay. The specificity and selectivity of the emulsion MIP proceeds to be highlighted, demonstrating a higher affinity towards amoxicillin compared to other compounds of the aminopenicillin class (ampicillin and cloxacillin). Conversion of the polymeric receptor is then undertaken, identifying a suitable dye for the displacement assay by means of binding experiments with malachite green, crystal violet, and mordant orange. Once identified, the optimal dye is then loaded onto the synthetic receptor, and the displaceability of the dye deduced by means of a dose response experiment. Alongside the sensitivity, the selectivity of the assay is scrutinized against cloxacillin and ampicillin. Yielding a dye displacement assay that can be used (semi-)quantitatively in a rapid manner.

Magnetic Assembly and Field-Tuning of Ellipsoidal-Nanoparticle-Based Colloidal Photonic Crystals

2015 ◽  
Vol 54 (24) ◽  
pp. 7077-7081 ◽  
Author(s):  
Mingsheng Wang ◽  
Le He ◽  
Wenjing Xu ◽  
Xin Wang ◽  
Yadong Yin
Keyword(s):  
Photonic Crystals ◽  
Colloidal Photonic Crystals ◽  
Magnetic Assembly

Molecularly imprinted photonic crystals for the direct label-free distinguishing of l-proline and d-proline

2013 ◽  
Vol 15 (40) ◽  
pp. 17250 ◽  
Author(s):  
Yongli Zhang ◽  
Zeng Pan ◽  
Yanxia Yuan ◽  
Zhiming Sun ◽  
Junkui Ma ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Label Free ◽  
Molecularly Imprinted ◽  
Direct Label

Fine tuning of optical signals in nanoporous anodic alumina photonic crystals by apodized sinusoidal pulse anodisation

Nanoscale ◽  
2016 ◽  
Vol 8 (43) ◽  
pp. 18360-18375 ◽  
Author(s):  
Abel Santos ◽  
Cheryl Suwen Law ◽  
Dominique Wong Chin Lei ◽  
Taj Pereira ◽  
Dusan Losic
Keyword(s):  
Photonic Crystals ◽  
Anodic Alumina ◽  
Fine Tuning ◽  
Optical Signals ◽  
Nanoporous Anodic Alumina

Aptamer-functionalized P(NIPAM-AA) hydrogel fabricated one-dimensional photonic crystals (1DPCs) for colorimetric sensing

RSC Advances ◽  
2016 ◽  
Vol 6 (43) ◽  
pp. 36827-36833 ◽  
Author(s):  
Hongyun Xuan ◽  
Jiaoyu Ren ◽  
Yanxi Zhu ◽  
Bo Zhao ◽  
Liqin Ge
Keyword(s):  
Photonic Crystals ◽  
Spin Coating ◽  
Visual Detection ◽  
Mercury Ions ◽  
Colorimetric Sensing ◽  
Coating Technology ◽  
One Dimensional

A robust means for the visual detection of highly toxic mercury ions (Hg2+) is developed with aptamer-functionalized one-dimensional photonic crystals (1DPCs) produced by spin-coating technology.

Magnetic Assembly and Field-Tuning of Ellipsoidal-Nanoparticle-Based Colloidal Photonic Crystals

2015 ◽  
Vol 127 (24) ◽  
pp. 7183-7187 ◽  
Author(s):  
Mingsheng Wang ◽  
Le He ◽  
Wenjing Xu ◽  
Xin Wang ◽  
Yadong Yin
Keyword(s):  
Photonic Crystals ◽  
Colloidal Photonic Crystals ◽  
Magnetic Assembly

scholarly journals Recent Advances in Sensing Applications of Molecularly Imprinted Photonic Crystals

2021 ◽  
Vol 9 ◽  
Author(s):  
Jing Fan ◽  
Lili Qiu ◽  
Yu Qiao ◽  
Min Xue ◽  
Xiao Dong ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
High Sensitivity ◽  
Molecularly Imprinted ◽  
Naked Eye ◽  
Sensing Applications ◽  
Recent Advances ◽  
Molecular Imprinting Technology ◽  
Sensitivity And Selectivity ◽  
Target Molecules ◽  
Naked Eye Detection

Photonic crystals (PhCs) with a brightly colored structure are novel materials and are widely used in chemical and biological sensing. Combining PhCs with molecular imprinting technology (MIT), the molecularly imprinted PhC (MIPC) sensors are fabricated, which can specifically recognize the target molecules. Aside from high sensitivity and selectivity, the MIPC sensors could recognize the naked eye detection because of its optical properties. In this review, an overview of recent advances in sensing applications of MIPC sensors including the responsive mechanisms, application in environmental monitoring, and the application to human health were illustrated. The MIPC sensors all responded to the analytes specifically and also showed high sensitivity in real samples, which provided a method to realize the rapid, convenient, naked eye, and real-time detection. Furthermore, the current limitations and potential future directions of MIPC sensors were also discussed.

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