Journal
CHEMISTRY OF MATERIALS
Volume 23, Issue 16, Pages 3645-3651Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cm2009829
Keywords
photopolymerization; evanescent wave; molecularly imprinted polymer; synthetic receptor; microstructuring; molecular recognition
Funding
- European Union (Marie Curie Research Training Network NAS-CENT) [MRTN-CT-2006-33873]
- French National Research Agency (ANR) [ANR-08-BLAN-0236-02]
- Regional Council of Picardy (France)
- Agence Nationale de la Recherche (ANR) [ANR-08-BLAN-0236] Funding Source: Agence Nationale de la Recherche (ANR)
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The fabrication of ultrathin selective molecularly imprinted polymer (MIP) microdots using polymerization by evanescent waves (PEW) is demonstrated for the first time. A specific prepolymerization mixture exhibiting suitable photosentivity at 405 nm was developed, containing in particular the visible-light photoinitiator bis(2,4,6-trimethylbenzoyl)-phenylphosphineoxide. PEW allows for nanometric resolution of the MIP dots in the z-scale. Within a few seconds, it is possible to generate molecularly imprinted microdots with sub-100 nm thickness. The amino acid Z-(L)-phenylalanine was used as model imprinting template, and the fluorescent dansyl-phenylalanine was employed as a fluorescently labeled derivative for the recognition tests. The MIP microdots showed specific molecular recognition for (L)-phenylalanine derivatives and were able to discriminate dansyl-(L)-phenylalanine from dansyl-(D)-phenylalanine.
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