title: Fabrication and humidity sensing performance studies of a fluorescent film based on a cholesteryl derivative of perylene bisimide.
abstract: A fluorescent film based on a cholesteryl derivative of perylene bisimide (PTCDI-co-CholDEA) was fabricated via utilization of an electrostatic spinning technique on a glass plate surface. SEM studies revealed that the film was characterized by fibrous network structure. It is the structure and the chemical composition that make the fluorescence emission of the film sensitive to the variation of local environmental humidity. The sensitivity of the sensing is 0.1497 (×10(4)a.u. of the intensity)/1% RH, of which RH is the abbreviation of relative humidity. The maximum quenching efficiency of the film is 55.4% when humidity reaches 97% RH. Furthermore, the sensing process is fully reversible, and presence of other commonly found liquids shows little effect to the monitoring process.
authors.affiliation: Xi'an High Technique Institute, Xi'an 710025, China.
authors.forename: Shujuan
authors.initials: S
authors.lastname: Zhang
authors.affiliation: Xi'an High Technique Institute, Xi'an 710025, China.
authors.forename: Feng
authors.initials: F
authors.lastname: Zhou
authors.affiliation: Key Lab of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710062, China.
authors.forename: Haonan
authors.initials: H
authors.lastname: Peng
authors.affiliation: Key Lab of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710062, China.
authors.forename: Taihong
authors.initials: T
authors.lastname: Liu
authors.affiliation: Key Lab of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710062, China.
authors.forename: Liping
authors.initials: L
authors.lastname: Ding
authors.affiliation: Key Lab of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710062, China.
authors.forename: Yu
authors.initials: Y
authors.lastname: Fang
keywords: Electro-spinning; Fluorescent film; Humidity; Perylene bisimide