Phosphorescent oxygen sensors based on nanostructured polyolefin substrates.

Autor: Gillanders RN; Biochemistry Department, Cavanagh Pharmacy Building, University College Cork, Cork, Ireland., Arzhakova OV, Hempel A, Dolgova A, Kerry JP, Yarysheva LM, Bakeev NF, Volynskii AL, Papkovsky DB
Jazyk: angličtina
Zdroj: Analytical chemistry [Anal Chem] 2010 Jan 15; Vol. 82 (2), pp. 466-8.
DOI: 10.1021/ac902406w
Abstrakt: New phosphorescent oxygen-sensitive materials based on nanostructured high density polyethylene and polypropylene films are described. The polymer substrates undergo treatment by a solvent crazing process to create a well-developed network of controlled, nanometer-size pores. Indicator dye molecules are then embedded by physical entrapment in such nanostructures which subsequently can be healed. Such sensors demonstrate improved working characteristics and allow simple, cost-efficient production and disposable use. They are well suited for large-scale applications such as nondestructive control of residual oxygen and "smart" packaging.
Databáze: MEDLINE