Ion-Imprinted Polymer-on-a-Sensor for Copper Detection

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Gerdan Z., SAYLAN İNCİ Y., Ugur M., DENİZLİ A.

BIOSENSORS-BASEL, vol.12, no.2, 2022 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 12 Issue: 2
  • Publication Date: 2022
  • Doi Number: 10.3390/bios12020091
  • Journal Name: BIOSENSORS-BASEL
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Agricultural & Environmental Science Database, Applied Science & Technology Source, EMBASE, INSPEC, MEDLINE, Directory of Open Access Journals
  • Keywords: copper detection, ion detection, ion-imprinted polymer, plasmonic sensor, COLORIMETRIC DETECTION, SELECTIVE DETECTION, CADMIUM, OXIDE, DOTS
  • Hacettepe University Affiliated: Yes


The accumulation of metal ions in the body is caused by human activities and industrial uses. Among these metal ions, copper is the third most abundant ion found in the human body and is indispensable for health because it works as a catalyst in the iron absorption processes. However, high doses of copper ions have been reported to generate various diseases. Different types of sensors are used to detect metal ions for several applications. To design selective and specific recognition sites on the sensor surfaces, molecular imprinting is one of the most used alteration methods to detect targets by mimicking natural recognition molecules. In this study, an ion-imprinted polymer-integrated plasmonic sensor was prepared to selectively detect copper (Cu(II)) ions in real-time. Following different characterization experiments, the Cu(II)-imprinted plasmonic sensor was employed for kinetic, selectivity, and reusability studies. According to the results, it was observed that this sensor can measure with 96% accuracy in the Cu(II) concentration range of 0.04-5 mu M in buffer solution. The limit of detection and limit of quantification values were computed as 0.027 mu M and 0.089 mu M. The results also showed that this plasmonic sensor works successfully not only in a buffer solution but also in complex media such as plasma and urine.