Halogenated salicylaldehyde azines: The heavy atom effect on aggregation-induced emission enhancement properties

2014 ◽  
Vol 145 ◽  
pp. 737-740 ◽  
Author(s):  
Xiao-tong Chen ◽  
Ai-jun Tong
Keyword(s):  
Heavy Atom ◽  
Aggregation Induced Emission ◽  
Heavy Atom Effect ◽  
Emission Enhancement ◽  
Atom Effect

Halogenated tetraphenylethene with enhanced aggregation-induced emission: an anomalous anti-heavy-atom effect and self-reversible mechanochromism

2019 ◽  
Vol 55 (99) ◽  
pp. 14938-14941 ◽  
Author(s):  
Pengfei Xu ◽  
Qianqian Qiu ◽  
Xinru Ye ◽  
Mengru Wei ◽  
Wenbin Xi ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Fluorescence Quantum Yield ◽  
Heavy Atom ◽  
Aggregation Induced Emission ◽  
Heavy Atom Effect ◽  
Atom Effect

Halogenated tetraphenylethene derivatives show an anomalous anti-heavy-atom effect where introducing heavy halogens into the typical AIEgen greatly improves the fluorescence quantum yield upon aggregation, and a self-reversible mechanochromism.

The novel isoindigo compound with aggregation-induced emission: Br–Br bonding joint restriction of intramolecular motion and for cell imaging property

Soft Matter ◽  
2021 ◽  
Author(s):  
Zhenyu Zhang ◽  
Yu Sun ◽  
Xu Zhao ◽  
Gaolei Xi ◽  
Xuedong Zhang ◽  
...  
Keyword(s):  
Solid State ◽  
Cell Imaging ◽  
Heavy Atom ◽  
The Novel ◽  
Aggregation Induced Emission ◽  
Heavy Atom Effect ◽  
Joint Restriction ◽  
Intramolecular Motion ◽  
Imaging Property ◽  
Atom Effect

6, 6’ Dibromided tert-butyloxycarbonyl Isoindigo (Br-TBOCII) possess intense fluorescence for solid state under excitation with Aggregation-Induced Emission (AIE) property, contrary to the classic heavy-atom effect. The unique AIE mechanism is...

Heavy Atom Effect on Metallole Nanoaggregates and Their Explosive Sensing Applications

2020 ◽  
Vol 20 (9) ◽  
pp. 5599-5603
Author(s):  
Bomina Shin ◽  
Honglae Sohn
Keyword(s):  
Optical Properties ◽  
Central Atom ◽  
Heavy Atom ◽  
Quantum Yields ◽  
Aggregation Induced Emission ◽  
Sensing Applications ◽  
Emission Enhancement ◽  
Atom Effect ◽  
Absolute Quantum ◽  
Explosive Sensing

Electronic and optical properties of metallole nanoaggregates (M = Ge and Sn) were investigated. Amplified photoluminescence (PL) properties, absolute quantum yields (QY), and critical aggregation concentrations for the metallole nanoaggregates were measured. The an aggregation-induced emission enhancement (AIEE) property decreases as the central atom becomes heavier in the metallole ring. Detection of TNT was achieved by the quenching PL of the metallole nanoaggregates. A linear Stern–Volmer relationship was observed for the detection of TNT.

Achieving high singlet-oxygen generation by applying the heavy-atom effect to thermally activated delayed fluorescent materials

2021 ◽  
Author(s):  
Ya-Fang Xiao ◽  
Jia-Xiong Chen ◽  
Wen-Cheng Chen ◽  
Xiuli Zheng ◽  
Chen Cao ◽  
...  
Keyword(s):  
Singlet Oxygen ◽  
Heavy Atom ◽  
Synergetic Effect ◽  
Heavy Atom Effect ◽  
Oxygen Generation ◽  
Thermally Activated ◽  
Singlet Oxygen Generation ◽  
Fluorescent Materials ◽  
Atom Effect

Applying the heavy-atom effect to TADF photosensitizers achieves ultra-high 1O2 generation (ФΔ = 0.91) by the synergetic effect of small ΔEST and considerable SOC.

Enhancement of Reverse Intersystem Crossing in Charge‐Transfer Molecule through Internal Heavy Atom Effect

2021 ◽  
pp. 2104646
Author(s):  
Hyung Suk Kim ◽  
Ja Yeon Lee ◽  
Seongjun Shin ◽  
Wonkyo Jeong ◽  
Sang Hoon Lee ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Heavy Atom ◽  
Intersystem Crossing ◽  
Heavy Atom Effect ◽  
Atom Effect

scholarly journals Etude par résonance magnétique nucléaire de composés organiques contenant des chalcogènes. II. L'éther de diphényle et ses analogues soufré, sélénié et telluré

1979 ◽  
Vol 57 (22) ◽  
pp. 2967-2970 ◽  
Author(s):  
Gabriel Llabrès ◽  
Marcel Baiwir ◽  
Léon Christiaens ◽  
Jean-Louis Piette
Keyword(s):  
Crystal Structure ◽  
Theoretical Calculations ◽  
Heavy Atom ◽  
Mesomeric Effect ◽  
Heavy Atom Effect ◽  
Inductive Effects ◽  
Structure Determinations ◽  
Résonance Magnétique ◽  
Atom Effect ◽  
Good Agreement

The 1Hmr study of the title compounds has revealed a screw conformation, with defined interconversion processes, in good agreement with crystal structure determinations and theoretical calculations. The mesomeric effect of the heteroatom is smaller than in the anisole series, due to steric inhibitions.The 13Cmr enhances, to some extent, these conclusions. In the case of Te compounds, a heavy atom effect adds to the classical mesomeric and inductive effects to account for the experimental observations.

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