Hexaphenylbenzene based push-pull fluorophores displaying intriguing polarity-dependent fluorescence behavior, AIE(E) characteristics and mega-large Stokes shifts

2022 ◽  
Vol 198 ◽  
pp. 110013
Author(s):  
Guohui Yin ◽  
Yan Li ◽  
Si Li ◽  
Bo Xu ◽  
Qiusheng Yang ◽  
...  
Keyword(s):  
Stokes Shifts

SELF-TRAPPED EXCITONS IN ORTHORHOMBIC SnBr2

2001 ◽  
Vol 15 (28n30) ◽  
pp. 4009-4012 ◽  
Author(s):  
Y. YAMASAKI ◽  
N. OHNO
Keyword(s):  
Time Dependence ◽  
Low Temperatures ◽  
Luminescence Band ◽  
Radiative Decay ◽  
Time Resolved ◽  
Tunneling Recombination ◽  
Exciton Region ◽  
Time Resolved Photoluminescence ◽  
Stokes Shifts ◽  
2.5 Ev Luminescence

Luminescence properties of SnBr 2 have been studied to reveal the photo-excited exciton relaxation process. Two types of luminescence with large Stokes shifts are found at low temperatures; the 2.2-eV luminescence band produced under the photo-excitation in the first exciton region, and the 2.5-eV luminescence band stimulated by photons with energies above the bandgap. The time-resolved photoluminescence measurements have revealed that the 2.2-eV luminescence comprises fast (1.2 μs) and slow (6.4 μs) exponential decay components, whereas the 2.5-eV luminescence shows the time dependence of I(t)∞ t-0.9. These results suggest that the former band is attributed to the radiative decay of self-trapped excitons, and the latter band would originate from tunneling recombination of holes with the STEL as in the case of lead halides.

scholarly journals Frontispiece: Indolizine-Squaraines: NIR Fluorescent Materials with Molecularly Engineered Stokes Shifts

2017 ◽  
Vol 23 (51) ◽  
Author(s):  
Louis E. McNamara ◽  
Tana A. Rill ◽  
Aron J. Huckaba ◽  
Vigneshraja Ganeshraj ◽  
Jacqueline Gayton ◽  
...  
Keyword(s):  
Fluorescent Materials ◽  
Stokes Shifts

Ethynyl-Boron Subphthalocyanines Displaying Efficient Cascade Energy Transfer and Large Stokes Shifts

2008 ◽  
Vol 47 (46) ◽  
pp. 8876-8880 ◽  
Author(s):  
Franck Camerel ◽  
Gilles Ulrich ◽  
Pascal Retailleau ◽  
Raymond Ziessel
Keyword(s):  
Energy Transfer ◽  
Cascade Energy ◽  
Stokes Shifts

scholarly journals New near-infrared rhodamine dyes with large Stokes shifts for sensitive sensing of intracellular pH changes and fluctuations

2018 ◽  
Vol 54 (55) ◽  
pp. 7625-7628 ◽  
Author(s):  
Yibin Zhang ◽  
Shuai Xia ◽  
Mingxi Fang ◽  
Wafa Mazi ◽  
Yanbo Zeng ◽  
...  
Keyword(s):  
Intracellular Ph ◽  
Near Infrared ◽  
Sensitive Detection ◽  
Amine Group ◽  
Ph Changes ◽  
Stokes Shifts ◽  
Rhodamine Dyes

New near-infrared rhodamine dyes with large Stokes shifts were developed and applied for sensitive detection of cellular pH changes and fluctuations by incorporating an additional amine group with fused rings.

Development of Near-Infrared Fluorescent Probes with Large Stokes Shifts for Non-Invasive Imaging of Tumor Hypoxia

Heterocycles ◽  
2020 ◽  
Vol 101 (2) ◽  
pp. 559
Author(s):  
Hideko Nagasawa ◽  
Kensuke Okuda ◽  
Bahaa G. M. Youssif ◽  
Ryosuke Sakai ◽  
Takahiro Ueno ◽  
...  
Keyword(s):  
Fluorescent Probes ◽  
Near Infrared ◽  
Tumor Hypoxia ◽  
Non Invasive ◽  
Stokes Shifts

Chlorination vs. fluorination: a study of halogenated benzo[c][1,2,5]thiadiazole-based organic semiconducting dots for near-infrared cellular imaging

2020 ◽  
Vol 44 (19) ◽  
pp. 7740-7748
Author(s):  
Daize Mo ◽  
Li Lin ◽  
Pengjie Chao ◽  
Hanjian Lai ◽  
Qingwen Zhang ◽  
...  
Keyword(s):  
Near Infrared ◽  
Cellular Imaging ◽  
Quantum Yields ◽  
Fluorescence Quantum Yields ◽  
Stokes Shifts

The chlorinated dots based on chlorinated benzo[c][1,2,5]thiadiazole unit possess higher fluorescence quantum yields, larger Stokes shifts, and better photostability than the fluorinated dots.

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