Smartphone-Based VOC Sensor Using Colorimetric Polydiacetylenes
- Title
- Smartphone-Based VOC Sensor Using Colorimetric Polydiacetylenes
- Author
- 김종만
- Keywords
- polydiacetylene; conjugated polymer; VOC sensor; solvatochromism; smartphone-based detection
- Issue Date
- 2018-01
- Publisher
- AMER CHEMICAL SOC
- Citation
- ACS APPLIED MATERIALS & INTERFACES, v. 10, no. 5, page. 5014-5021
- Abstract
- Owing to a unique colorimetric (typically blue-to-red) feature upon environmental stimulation, polydiacetylenes (PDAs) have been actively employed in chemosensor systems. We developed a highly accurate and simple volatile organic compound (VOC) sensor system that can be operated using a conventional smartphone. The procedure begins with forming an array of four different PDAs on conventional paper using inkjet printing of four corresponding diacetylenes followed by photopolymerization. A database of color changes (i.e., red and hue values) is then constructed on the basis of different solvatochromic responses of the 4 PDAs to 11 organic solvents. Exposure of the PDA array to an unknown solvent promotes color changes, which are imaged using a smartphone camera and analyzed using the app. A comparison of the color changes to the database promoted by the 11 solvents enables the smartphone app to identify the unknown solvent with 100% accuracy. Additionally, it was demonstrated that the PDA array sensor was sufficiently sensitive to accurately detect the 11 VOC gases.
- URI
- https://pubs.acs.org/doi/10.1021/acsami.7b18121https://repository.hanyang.ac.kr/handle/20.500.11754/117024
- ISSN
- 1944-8244; 1944-8252
- DOI
- 10.1021/acsami.7b18121
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > CHEMICAL ENGINEERING(화학공학과) > Articles
- Files in This Item:
There are no files associated with this item.
- Export
- RIS (EndNote)
- XLS (Excel)
- XML