1223037-70-4Relevant articles and documents
1, 3-Indanedione functionalized fluorene luminophores: Negative solvatochromism, nanostructure-morphology determined AIE and mechanoresponsive luminescence turn-on
Zhang, Fang,Zhang, Rong,Liang, Xiaozhong,Guo, Kunpeng,Han, Zhaoxiang,Lu, Xiaoqing,Xie, Jingjuan,Li, Jie,Li, Da,Tian, Xia
, p. 225 - 232 (2018)
Luminous efficiency in polar environment and aggregated state, as well as high-contrast luminescence on/off switching under external stimuli are significant issues to be addressed in developing functional fluorescent materials. Combining the advantages of solvatochromic effect in intramolecular charge transfer (ICT) compounds with their nanostructured morphological effects, we herein report a series of A–π–D–π–A fluorene derivatives, which simultaneously exhibit negative solvatochromism, aggregation-induced emission (AIE) and mechanoresponsive luminescence (MRL) turn-on. These molecules contain the same fluorene donor (D) and 1,3-indandione acceptor (A) but differ in alkyl substituents in the 9-position of the fluorene segment, including 9,9-dibutyl (b-DIPF), 9,9-dioctyl (o-DIPF) and 9,9-didodecyl (d-DIPF). The emission colors of these compounds were changed from blue to orange-red, and the fluorescence quantum yields increased upon increasing the solvent polarity from nonpolar hexane to polar dimethyl sulfoxide. Due to the formed random nanostructured aggregates, the compounds exhibited AIE characteristics in THF/H2O mixtures. Oppositely, their emission quenched 0D particles which were afforded by quick evaporation of their dichloromethane solvents under vacuum displayed remarkable mechanoresponsive luminescence turn-on behavior. Our results suggest that rationally design ICT molecules and control their nanostructures would be promising way for realizing multifunctional fluorescent materials.
Synthesis of fluorene-based di-BODIPY dyes containing different aromatic linkers and their properties
Zhao, Hongbin,Liao, Junxu,Peng, Min,Wang, Yucai,Zhou, Weinan,Li, Bohong,Shen, Songping,Xie, Zechuan
, p. 7145 - 7149 (2015)
Three novel fluorene-based symmetric di-BODIPY dyes (BDPa-c) featuring a fluorene motif as the central core, BODIPY as the terminal groups, and several types of aromatic groups, including phenyl, thiophene, and furan, as linkers were synthesized. The optical and electrochemical properties of these BODIPY dyes were investigated, and DFT theoretical calculations were performed. All these dyes show absorption bands in the region of 300-650 nm with high extinction coefficients. Furan-linked dye BDPc exhibit a more coplanar molecular structure, which increases the efficient π-conjugation length and causes intensive intramolecular charge transfer (ICT), resulting in broadened and red-shifted absorption bands. The luminescence of these dyes is located in near-infrared regions with large Stokes shifts (1013-4862 cm-1). The HOMO/LUMO energy levels, as investigated by CV are approximately 5.5 eV and 3.6 eV, respectively.
Tetrathiafulvalene Vinylogue-Fluorene Co-oligomers: Synthesis, Properties, and Supramoleclar Interactions with Carbon Nanotubes
Khadem, Mohammadreza,Zhao, Yuming
, p. 7419 - 7429 (2015)
A series of bis(dithiafulvenyl)-end-capped fluorene derivatives was prepared and subjected to a one-pot iodine-promoted oxidative polymerization to yield π-conjugated co-oligomers containing tetrathiafulvalene vinylogue and fluorene repeat units. The resu
A-pi-D-pi-A type small molecule solar cell receptor material based on thiophene indenone and fluorene and preparation method of A-pi-D-pi-A type small molecule solar cell receptor material
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Paragraph 0055-0056; 0059-0060, (2020/03/06)
The invention discloses an A-pi-D-pi-A type small molecule solar cell receptor material based on thiophene indenone and fluorene and a preparation method of the A-pi-D-pi-A type small molecule solar cell receptor material. According to the receptor material, fluorine is adopted as a central core structure, groups such as thiophene, furan and benzene are adopted as pi bridges, and aldehyde groups at both ends are subjected to a condensation reaction with active sites of an electrondrawing group thiophene indanone to obtain symmetric target molecules at normal temperature and normal pressure. The A-pi-D-pi-A type small molecule solar cell receptor material based on thiophene indenone and fluorine is simple in synthesis method, easy in reaction condition control, high in yield, good in universal applicability and possible in efficient synthesis, can be widely applied to fields such as energy, life, analysis, material science, and the like, and is particularly suitable for being used as organic small molecule solar cell receptor materials, and the like.
