Red-emitting boron difluoride complexes with a mega-large Stokes shift and unexpectedly high fluorescence quantum yield

2020 ◽  
Vol 56 (14) ◽  
pp. 2159-2162 ◽  
Author(s):  
Xiaojie Ren ◽  
Fan Zhang ◽  
Hongchen Luo ◽  
Lide Liao ◽  
Xiangzhi Song ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Fluorescence Quantum Yield ◽  
Stokes Shift ◽  
Quantum Yields ◽  
Large Stokes Shift ◽  
Fluorescence Quantum Yields ◽  
Boron Difluoride ◽  
High Fluorescence ◽  
Stokes Shifts ◽  
High Fluorescence Quantum Yield

Introduction of a tetrahydroquinoxaline donor into boron difluoride complexes largely extended their emissions (617–684 nm), highly improved their fluorescence quantum yields (up to 0.68) and greatly increased their Stokes shifts (up to 209 nm).

A bright red-emitting flavonoid for Al3+ detection in live cells without quenching ICT fluorescence

2019 ◽  
Vol 55 (49) ◽  
pp. 7041-7044 ◽  
Author(s):  
Chathura S. Abeywickrama ◽  
Keti A. Bertman ◽  
Yi Pang
Keyword(s):  
Stokes Shift ◽  
Live Cells ◽  
Quantum Yields ◽  
Large Stokes Shift ◽  
Fluorescence Quantum Yields ◽  
High Fluorescence

A bright red-emitting flavonoid derivative was synthesized, which exhibited a large Stokes shift (Δλ > 150 nm) and high fluorescence quantum yields (ϕfl = 0.10–0.35).

scholarly journals A simple sensor based on 1,8-naphthalimide with large Stokes shift for detection of hypochlorous acid in living cells

RSC Advances ◽  
2019 ◽  
Vol 9 (54) ◽  
pp. 31196-31201 ◽  
Author(s):  
Chunpeng Jiao ◽  
Yuanyuan Liu ◽  
Wenjuan Lu ◽  
Pingping Zhang ◽  
Xia Ma ◽  
...  
Keyword(s):  
Detection Limit ◽  
Quantum Yield ◽  
Fluorescence Quantum Yield ◽  
Hypochlorous Acid ◽  
Stokes Shift ◽  
High Sensitivity ◽  
Living Cells ◽  
High Fluorescence ◽  
Excellent Selectivity ◽  
High Fluorescence Quantum Yield

Probe 1 shows excellent selectivity to HOCl among different ions including common ROS, high sensitivity, high fluorescence quantum yield (Φ = 0.93), low detection limit (0.237 μM) and successfully used for the detection of HOCl in cells.

scholarly journals A red fluorescent BODIPY probe for iridium (III) ion and its application in living cells

2019 ◽  
Vol 6 (1) ◽  
pp. 181090 ◽  
Author(s):  
Xingyu Qu ◽  
Yongjun Bian ◽  
Jianqing Li ◽  
Yufeng Pan ◽  
Yang Bai
Keyword(s):  
Aqueous Solution ◽  
Quantum Yield ◽  
Fluorescent Probe ◽  
Fluorescence Quantum Yield ◽  
High Selectivity ◽  
Stokes Shift ◽  
Living Cells ◽  
Optical Performance ◽  
High Fluorescence ◽  
High Fluorescence Quantum Yield

A new red fluorescent probe 1 based on BODIPY skeleton has been successfully synthesized through introduction of 2-(thiophen-2-yl) quinoline moiety at meso - and 3-position, which exhibits excellent optical performance, including high fluorescence quantum yield, large pseudo Stokes' shift as well as high selectivity and sensitivity towards iridium (III) ion in aqueous solution and in living cells.

Facile preparation of solid-state fluorescent carbon dots with high fluorescence quantum yield and application in rapid latent fingerprints detection

2021 ◽  
Author(s):  
Hai-Jiao Wang ◽  
Wan-Yi Hou ◽  
Jing Kang ◽  
Xin-Yu Zhai ◽  
Hongli Chen ◽  
...  
Keyword(s):  
Solid State ◽  
Quantum Yield ◽  
Fluorescence Quantum Yield ◽  
Latent Fingerprints ◽  
Energy Resonance ◽  
Facile Preparation ◽  
High Fluorescence ◽  
Fluorescent Carbon Dots ◽  
High Fluorescence Quantum Yield ◽  
Resonance Transfer

Due to the direct π - π interaction and excessive energy resonance transfer, it is very challenging to prepare CDs with high fluorescence quantum yield (QY) in solid state. In...

scholarly journals Unusually large fluorescence quantum yield for a near-infrared emitting DNA-stabilized silver nanocluster

2020 ◽  
Vol 56 (47) ◽  
pp. 6384-6387
Author(s):  
Vlad A. Neacşu ◽  
Cecilia Cerretani ◽  
Mikkel B. Liisberg ◽  
Steven M. Swasey ◽  
Elisabeth G. Gwinn ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Fluorescence Quantum Yield ◽  
Near Infrared ◽  
Infrared Region ◽  
Silver Nanoclusters ◽  
Silver Nanocluster ◽  
Dna Strands ◽  
Near Infrared Region ◽  
High Fluorescence ◽  
High Fluorescence Quantum Yield

Silver nanoclusters stabilized by 5′-CCCGGAGAAG-3′ DNA strands display an unusually high fluorescence quantum yield in the near-infrared region.

scholarly journals Achieving remarkable and reversible mechanochromism from a bright ionic AIEgen with high specificity for mitochondrial imaging and secondary aggregation emission enhancement for long-term tracking of tumors

2020 ◽  
Vol 4 (3) ◽  
pp. 941-949 ◽  
Author(s):  
Xinzhe Yang ◽  
Qian Wang ◽  
Peiyu Hu ◽  
Chao Xu ◽  
Wenjing Guo ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Cancer Cells ◽  
Fluorescence Quantum Yield ◽  
High Specificity ◽  
Emission Enhancement ◽  
High Fluorescence ◽  
High Fluorescence Quantum Yield

An ionic AIEgen with high fluorescence quantum yield shows remarkable and reversible mechanochromism as well as excellent mitochondrial imaging of cancer cells and long-term tracking of tumors.

Forcing dimethylacridine crooking to improve the efficiency of orange-red thermally activated delayed fluorescent emitters

2020 ◽  
Vol 8 (30) ◽  
pp. 10416-10421
Author(s):  
Feng-Yan Hao ◽  
Yi-Zhong Shi ◽  
Kai Wang ◽  
Xiao-Chun Fan ◽  
Lin Wu ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Steric Hindrance ◽  
Fluorescence Quantum Yield ◽  
Energy Splitting ◽  
Triplet Energy ◽  
Thermally Activated ◽  
High Fluorescence ◽  
Planar Geometries ◽  
High Fluorescence Quantum Yield

By crooking conventional donor segments via suitable steric hindrance, nearly planar geometries, a small singlet–triplet energy splitting and a high fluorescence quantum yield can be realized simultaneously.

Waterproof perovskites: high fluorescence quantum yield and stability from a methylammonium lead bromide/formate mixture in water

2020 ◽  
Vol 8 (17) ◽  
pp. 5873-5881 ◽  
Author(s):  
Yeasin Khan ◽  
Yohan Ahn ◽  
Hyuna Lee ◽  
Jaeki Jeong ◽  
Yun Seop Shin ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Fluorescence Quantum Yield ◽  
Precursor Solution ◽  
Lead Bromide ◽  
High Fluorescence ◽  
High Fluorescence Quantum Yield

We’ve observed intense, water-stable fluorescence from lead formate crystals when they are precipitated from a CH3NH3PbBr3 (MAPbBr3) perovskite precursor solution.

Electronic Structure and Photophysical Characteristics of Substituted 3-(2-Benzthiazolyl)-Coumarins and Coumarinimines

1987 ◽  
Vol 42 (9) ◽  
pp. 987-993
Author(s):  
P. Nikolova ◽  
N. Tyutyulkova ◽  
V. Dryanska
Keyword(s):  
Electronic Structure ◽  
Quantum Yield ◽  
Quantum Chemical ◽  
Fluorescence Quantum Yield ◽  
Spectral Properties ◽  
High Fluorescence ◽  
High Fluorescence Quantum Yield

The spectral properties of a group of 3-(2-benzthiazolyl)-coumarins and coumarinimines, some of them having high fluorescence quantum yield (Qf > 0.7), are described.The quantum -chemical investigations show that the main chromophore of this group of dyes is the 3 -(2-thiazolyl)-2 H -pyran -2-one fragmenti.e . the coumarin (coumarinimine) and the benzthiazolyl fragments are not separate chromophores.

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