scholarly journals Preparation and photophysical properties of quinazoline-based fluorophores

RSC Advances ◽  
2020 ◽  
Vol 10 (51) ◽  
pp. 30297-30303
Author(s):  
Zhichao Wang ◽  
Hanjie Li ◽  
Zhixing Peng ◽  
Zaibin Wang ◽  
Yanguang Wang ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Photophysical Properties ◽  
High Quantum Yield ◽  
High Quantum ◽  
Fluorescent Compounds

A series of new fluorescent compounds were synthesized based on 2-(3,5-bis(trifluoromethyl)phenyl)-quinazoline, with alterable emission, high quantum yield, mechanochromic properties and can be applied as an optoelectronic material for blue OLED.

scholarly journals Synthesis, structure and photophysical properties of a highly luminescent terpyridine-diphenylacetylene hybrid fluorophore and its metal complexes

2015 ◽  
Vol 44 (1) ◽  
pp. 254-267 ◽  
Author(s):  
Biswa Nath Ghosh ◽  
Filip Topić ◽  
Prasit Kumar Sahoo ◽  
Prasenjit Mal ◽  
Jarno Linnera ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Metal Complexes ◽  
Photophysical Properties ◽  
Blue Emission ◽  
High Quantum Yield ◽  
High Quantum ◽  
Bright Blue

A new fluorescent terpyridyl-diphenylacetylene hybrid chromophore is reported. The fluorophore displays bright blue emission with an exceptionally high quantum yield.

scholarly journals Columnar/herringbone dual crystal packing of pyrenylsumanene and its photophysical properties

2014 ◽  
Vol 10 ◽  
pp. 841-847 ◽  
Author(s):  
Binod Babu Shrestha ◽  
Shuhei Higashibayashi ◽  
Hidehiro Sakurai
Keyword(s):  
Quantum Yield ◽  
Single Crystal ◽  
Crystalline Phase ◽  
Crystal Packing ◽  
Photophysical Properties ◽  
High Quantum Yield ◽  
Absorption And Emission ◽  
Π Interactions ◽  
High Quantum ◽  
Π Stacking

A single crystal of pyrenylsumanene was found to exhibit both columnar and herringbone crystal packing. The sumanene moieties form unidirectional columnar structures based on π–π stacking while the pyrene moieties generate herringbone structures due to CH–π interactions. The absorption and emission maxima of pyrenylsumanene were both red-shifted relative to those of sumanene and pyrene, owing to the extension of π-conjugation. Monomer emission with high quantum yield (0.82) was observed for pyrenylsumanene in solution, while excimer-type red-shifted emission was evident in the crystalline phase.

scholarly journals Improved photodecarboxylation properties in zinc photocages constructed using m-nitrophenylacetic acid variants

2021 ◽  
Author(s):  
Austin Shigemoto ◽  
Avik Bhattacharjee ◽  
Erin Hickey ◽  
Hallee Boyd ◽  
Theresa McCormick ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Quantum Yield ◽  
Photophysical Properties ◽  
Quantum Yields ◽  
Biological Applications ◽  
High Quantum Yield ◽  
High Quantum ◽  
Derivatives Of ◽  
Fluoro Derivatives

The methoxy- and fluoro-derivatives of meta-nitrophenylacetic acid (mNPA) chromophores undergo photodecarboxylation with comparable quantum yields to unsubstituted mNPA, but uncage at red-shifted excitation wavelengths. This observation prompted us to investigate DPAdeCageOMe (2-[bis(pyridin-2-ylmethyl)amino]-2-(4-methoxy-3-nitrophenyl)acetic acid) and DPAdeCageF (2-[bis(pyridin-2-ylmethyl)amino]-2-(4-fluoro-3-nitrophenyl)acetic acid) as Zn2+ photocages. DPAdeCageOMe has a high quantum yield and exhibits other photophysical properties comparable to XDPAdeCage ({bis[(2-pyridyl)methyl]amino}(9-oxo-2-xanthenyl) acetic acid), the best perforiming Zn2+ photocage reported to date. Since the synthesis of DPAdeCageOMe is more straightforward than XDPACage, the new photocage will be a highly competitive tool for biological applications.

Superior Stable and High Quantum Yield Phosphor Na2BaSr(PO4)2: Eu2+ for Plant Growth LEDs

2021 ◽  
Author(s):  
Jinmeng Xiang ◽  
Xiaoqi Zhao ◽  
Hao Suo ◽  
Minkun Jin ◽  
Xue Zhou ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Plant Growth ◽  
Light Emitting Diodes ◽  
Light Environment ◽  
High Quantum Yield ◽  
Light Emitting ◽  
Growth Rhythm ◽  
High Quantum ◽  
Violet Light ◽  
Important Means

Controlling the light environment of plant growth using phosphor-converted light-emitting diodes (pc-LEDs) is an important means to regulate the growth rhythm and enhance the yield, in which bluish violet light...

scholarly journals Heavily Eu2O3-doped yttria-aluminoborate glasses for red photoconversion with a high quantum yield: luminescence quenching and statistics of cluster formation

2014 ◽  
Vol 2 (41) ◽  
pp. 8678-8682 ◽  
Author(s):  
Guojun Gao ◽  
Jingxue Wei ◽  
Yang Shen ◽  
Mingying Peng ◽  
Lothar Wondraczek
Keyword(s):  
Quantum Yield ◽  
Doping Concentration ◽  
Statistical Approach ◽  
Cluster Formation ◽  
Luminescence Quenching ◽  
High Quantum Yield ◽  
Photoluminescence Quenching ◽  
High Quantum

We employ a statistical approach to estimate the number of photoluminescence quenching species as a function of doping concentration.

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