title: CsPbBr3Perovskite Quantum Dots-Based Monolithic Electrospun Fiber Membrane as an Ultrastable and Ultrasensitive Fluorescent Sensor in Aqueous Medium.
abstract: Perovskite quantum dots with excellent optical properties and robust durability stand as an appealing and desirable candidate for fluorescence resonance energy transfer (FRET) based fluorescence detection, a powerful technique featuring excellent accuracy and convenience. In this work, a monolithic superhydrophobic polystyrene fiber membrane with CsPbBr3perovskite quantum dots encapsulated within (CPBQDs/PS FM) was prepared via one-step electrospinning. Coupling CPBQDs with PS matrix, this CPBQDs/PS FM composite exhibits high quantum yields (∼91%), narrow half-peak width (∼16 nm), nearly 100% fluorescence retention after being exposed to water for 10 days and 79.80% fluorescence retention after 365 nm UV-light (1 mW/cm2) illumination for 60 h. Thanks to the outstanding optical property of CPBQDs, an ultralow detection limit of 0.01 ppm was obtained for Rhodamine 6G (R6G) detection, with the FRET efficiency calculated to be 18.80% in 1 ppm R6G aqueous solution. Electrospun as well-designed fiber membranes, CPBQDs/PS FM composite also possesses good tailorability and recyclability, showing exciting potential for future implementation into practical applications.
authors.affiliation: Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology , 130 Meilong Road, Shanghai 200237, People's Republic of China.
authors.forename: Yuanwei
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology , 130 Meilong Road, Shanghai 200237, People's Republic of China.
authors.forename: Yihua
authors.initials: Y
authors.lastname: Zhu
authors.affiliation: Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology , 130 Meilong Road, Shanghai 200237, People's Republic of China.
authors.forename: Jianfei
authors.initials: J
authors.lastname: Huang
authors.affiliation: Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology , 130 Meilong Road, Shanghai 200237, People's Republic of China.
authors.forename: Jin
authors.initials: J
authors.lastname: Cai
authors.affiliation: Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology , 130 Meilong Road, Shanghai 200237, People's Republic of China.
authors.forename: Jingrun
authors.initials: J
authors.lastname: Zhu
authors.affiliation: Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology , 130 Meilong Road, Shanghai 200237, People's Republic of China.
authors.forename: Xiaoling
authors.initials: X
authors.lastname: Yang
authors.affiliation: Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology , 130 Meilong Road, Shanghai 200237, People's Republic of China.
authors.forename: Jianhua
authors.initials: J
authors.lastname: Shen
authors.affiliation: Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology , 130 Meilong Road, Shanghai 200237, People's Republic of China.
authors.forename: Hao
authors.initials: H
authors.lastname: Jiang
authors.affiliation: Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology , 130 Meilong Road, Shanghai 200237, People's Republic of China.
authors.forename: Chunzhong
authors.initials: C
authors.lastname: Li