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Dong-Hoon Park, Jaesung Hong, In Sung Park, Chan Woo Lee and Jong-Man Kim A Colorimetric Hydrocarbon Sensor Employing a Swelling-Induced Mechanochromic Polydiacetylene Advanced Functional Materials 24

Article first published online: 28 MAY 2014 | DOI: 10.1002/adfm.201400779

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By taking advantage of a mechanochromic conjugated polydiacetylene (PDA) and the hydrocarbon-induced swelling properties of polydimethylsiloxane (PDMS), a sensor film that enables colorimetric differentiation among saturated aliphatic hydrocarbons (SAHCs) is developed. The unprecedented PDA–PDMS composite sensor undergoes a blue-to-red colorimetric transition that is dependent on the chain length of the hydrocarbon target.

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