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- Title
Colorimetric Chemosensor for Chloramphenicol Based on Colloidal Magnetically Assembled Molecularly Imprinted Photonic Crystals.
- Authors
You, Ai ‐ mei; Ni, Xin ‐ jiong; Cao, Yu ‐ hua; Cao, Guang ‐ qun
- Abstract
A novel colorimetric chemosensor with good sensitivity, specificity, and self-reporting capability for chloramphenicol ( CAP) has been successfully constructed based on colloidal, magnetically assembled photonic crystals coupled with molecular imprinting. The colloidal, magnetically assembled, molecularly imprinted photonic crystals ( CMA- MIPCs) were prepared by assembling CAP in magnetic, molecularly imprinted nanohydrogels ( MMIHs) in a magnetic field. The magnetic assembly of photonic crystals and the sensing processes could be completed simultaneously when MMIHs were dispersed in CAP solutions and in a magnetic field, and the response time was less than 1 min. The CAP concentration could be visually determined from the color change of the CMA- MIPCs sensor. The diffraction color blue-shifted from luminous yellow of the blank to purple in a 1.0 mg/mL CAP solution, with a determination limit of 1.0 × 10−3 mg/mL. It could provide a new strategy for qualitative or semiquantitative detection of CAP.
- Subjects
PHOTONIC crystals; COLORIMETRIC analysis; CHEMORECEPTORS; CHLORAMPHENICOL; MOLECULAR imprinting; MOLECULAR self-assembly
- Publication
Journal of the Chinese Chemical Society, 2017, Vol 64, Issue 10, p1235
- ISSN
0009-4536
- Publication type
Article
- DOI
10.1002/jccs.201700126