Journal ArticleDOI
Dimerization-Induced Solid-State Excimer Emission Showing Consecutive Thermochromic Luminescence Based on Acridine-Modified o-Carboranes.
TLDR
In this paper, the authors reported the newly synthesized acridine-diehynyl-o-carborane AcE2 and comprehensively compare it to AcE1.Abstract:
Although excimer emission is a useful luminescent phenomenon for fabricating optical sensors and probes, it is difficult to apply excimer emission for film sensors due to critical concentration quenching in the solid state. Therefore, robust molecular designs for solid-state excimer emission are still being explored. One of the key examples is the previously reported acridine-ethynyl-o-carborane AcE1, which showed a bright solid-state excimer emission assisted by characteristic CcageH···N interactions. In this paper, we report the newly synthesized acridine-diehynyl-o-carborane AcE2 and comprehensively compare it to AcE1. Both compounds had the same crystalline packing mode based on dimer formation, resulting in an efficient π-overlapping area and solid-state excimer emission. Variable-temperature photoluminescence (VT-PL) measurements revealed the consecutive thermochromic luminescence of these compounds. Finally, on the basis of the easily accessible spray-coating method, we constructed the thermochromic luminescent sensors on quartz substrates. According to the mechanistic studies, it is demonstrated that the design strategy based on a dimer-induced solid-state excimer should have great potential for applications as a molecular thermometer.read more
Citations
More filters
Journal ArticleDOI
Synthesis of Iminoboryl o-Carboranes by Lewis Base Promoted Aminoborirane-to-Iminoborane Isomerization.
TL;DR: The iminoboryl o-carboranes (Me3Si)-Cb-B-B≡N-R (Cb = B10C2H10, 3a, R = SiMe3; 3b, T = tBuNC) was synthesized by tetrahydrofuran (THF)-promoted isomerization as discussed by the authors .
Journal ArticleDOI
Regulation of solid-state dual-emission properties by switching luminescence processes based on a bis-<i>o</i>-carborane-modified anthracene triad
TL;DR: In this paper , a combination of luminescence processes in dual-emission properties by selecting preparation protocols is designed but also temperature-driven switching of luminariescence processes based on a bis- o -carborane-substituted anthracene triad in crystals.
Journal ArticleDOI
Switching between intramolecular charge transfer and excimer emissions in solids based on aryl-modified ethynyl‒o-carboranes
TL;DR: In this paper , the authors report stimulus-responsive luminochromic materials based on polycyclic aromatic hydrocarbon (PAH), such as anthracene and pyrene, modified with the ethynyl-o-carborane unit.
Journal ArticleDOI
Controlling the Dual-Emission Character of Aryl-Modified o-Carboranes by Intramolecular CH···O Interaction Sites.
TL;DR: In this paper , a dual-emission system was realized in solid-state o-carborane derivatives, in which two luminescent bands simultaneously appear by photo excitation.
Journal ArticleDOI
Conformation-Dependent Electron Donation of Nido-Carborane Substituents and Its Influence on Phosphorescence of Tris(2,2′-bipyridyl)ruthenium(II) Complex
TL;DR: In this article , the synthesis of the nido-carborane-substituted ruthenium complexes and the substituent effects of nidocarboranes on the optical properties were reported.
References
More filters
BookDOI
Molecular fluorescence : principles and applications
TL;DR: In this article, the effects of intermolecular photophysical processes on fluorescence emission are discussed and an analysis of the effect of polarity of fluorescence emissions is presented.
Journal ArticleDOI
Photophysics of preassociated pyrenes in aqueous polymer solutions and in other organized media
Journal ArticleDOI
Multistimuli Two-Color Luminescence Switching via Different Slip-Stacking of Highly Fluorescent Molecular Sheets
Seong-Jun Yoon,Jong Won Chung,Johannes Gierschner,Kil Suk Kim,Moon Gun Choi,Dongho Kim,Soo Young Park +6 more
TL;DR: C cyanostilbene-based highly luminescent molecular sheets which exhibit two-color fluorescence switching in response to pressure, temperature, and solvent vapor are reported, which provides a novel concept of rewritable fluorescent optical recording media.
Journal ArticleDOI
Piezochromic Luminescence Based on the Molecular Aggregation of 9,10-Bis((E)-2-(pyrid-2-yl)vinyl)anthracene†
Yujie Dong,Bin Xu,Jibo Zhang,Xiao Tan,Lijuan Wang,Jinlong Chen,Hongguang Lv,Shanpeng Wen,Bao Li,Ling Ye,Bo Zou,Wenjing Tian +11 more
TL;DR: An effective mechanism of piezochromic luminescence on the basis of the molecular aggregation state of 9,10-bis((E)-2-(pyrid-2-yl)vinyl)anthracene (BP2VA) is reported, which exhibited spectacular luminescent characteristics: grinding and the exertion of external pressure on the powder led to a change in its photoluminescence color from green to red.