title: Rational Design of Molecular Fluorophores for Biological Imaging in the NIR-II Window.
abstract: A new design for second near-infrared window (NIR-II) molecular fluorophores based on a shielding unit-donor-acceptor-donor-shielding unit (S-D-A-D-S) structure is reported. With 3,4-ethylenedioxy thiophene as the donor and fluorene as the shielding unit, the best performance fluorophores IR-FE and IR-FEP exhibit an emission quantum yield of 31% in toluene and 2.0% in water, respectively, representing the brightest organic dyes in NIR-II region reported so far.
authors.affiliation: Department of Materials Science and Engineering, South University of Science and Technology of China, Shenzhen, 518055, China.|Research Center for Advanced Materials and Biotechnology, Research Institute of Tsinghua University in Shenzhen, Shenzhen, 518057, China.
authors.forename: Qinglai
authors.initials: Q
authors.lastname: Yang
authors.affiliation: Department of Chemistry, Stanford University, Stanford, CA, 94305, USA.
authors.forename: Zhuoran
authors.initials: Z
authors.lastname: Ma
authors.affiliation: Department of Materials Science and Engineering, South University of Science and Technology of China, Shenzhen, 518055, China.
authors.forename: Huasen
authors.initials: H
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai, 200062, China.
authors.forename: Bin
authors.initials: B
authors.lastname: Zhou
authors.affiliation: Department of Chemistry, Stanford University, Stanford, CA, 94305, USA.
authors.forename: Shoujun
authors.initials: S
authors.lastname: Zhu
authors.affiliation: Department of Chemistry, Stanford University, Stanford, CA, 94305, USA.
authors.forename: Yeteng
authors.initials: Y
authors.lastname: Zhong
authors.affiliation: Department of Physics, School of Sciences and Tianjin Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin, 300350, China.
authors.forename: Junying
authors.initials: J
authors.lastname: Wang
authors.affiliation: Department of Materials Science and Engineering, South University of Science and Technology of China, Shenzhen, 518055, China.|Department of Chemistry, Stanford University, Stanford, CA, 94305, USA.
authors.forename: Hao
authors.initials: H
authors.lastname: Wan
authors.affiliation: Department of Chemistry, Stanford University, Stanford, CA, 94305, USA.
authors.forename: Alexander
authors.initials: A
authors.lastname: Antaris
authors.affiliation: Department of Materials Science and Engineering, South University of Science and Technology of China, Shenzhen, 518055, China.
authors.forename: Rui
authors.initials: R
authors.lastname: Ma
authors.affiliation: Department of Materials Science and Engineering, South University of Science and Technology of China, Shenzhen, 518055, China.
authors.forename: Xiao
authors.initials: X
authors.lastname: Zhang
authors.affiliation: Department of Materials Science and Engineering, South University of Science and Technology of China, Shenzhen, 518055, China.
authors.forename: Jingyi
authors.initials: J
authors.lastname: Yang
authors.affiliation: Department of Physics, School of Sciences and Tianjin Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin, 300350, China.
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai, 200062, China.
authors.forename: Haitao
authors.initials: H
authors.lastname: Sun
authors.affiliation: Research Center for Advanced Materials and Biotechnology, Research Institute of Tsinghua University in Shenzhen, Shenzhen, 518057, China.
authors.forename: Weiqiang
authors.initials: W
authors.lastname: Liu
authors.affiliation: Department of Materials Science and Engineering, South University of Science and Technology of China, Shenzhen, 518055, China.
authors.forename: Yongye
authors.initials: Y
authors.lastname: Liang
authors.affiliation: Department of Chemistry, Stanford University, Stanford, CA, 94305, USA.
authors.forename: Hongjie
authors.initials: H
authors.lastname: Dai
mesh_terms: D005456:Fluorescent Dyes / Q000737:chemistry*; D014867:Water
chemical_list: D005456:Fluorescent Dyes; D014867:Water
keywords: 3,4-ethylenedioxy thiophene; biological imaging; fluorine; molecular fluorophores; second near-infrared window