Photophysical properties of meso-substituted octaethylporphines and their zinc complexes

1991 ◽  
Vol 87 (18) ◽  
pp. 2933 ◽  
Author(s):  
Guo-Zhang Wu ◽  
Wei-Xing Gan ◽  
Hiu-Kwong Leung
Keyword(s):  
Photophysical Properties ◽  
Zinc Complexes

scholarly journals Photophysical tuning of the aggregation-induced emission of a series of para-substituted aryl bis(imino)acenaphthene zinc complexes

2015 ◽  
Vol 44 (26) ◽  
pp. 11984-11996 ◽  
Author(s):  
Daniel A. Evans ◽  
Lucia Myongwon Lee ◽  
Ignacio Vargas-Baca ◽  
Alan H. Cowley
Keyword(s):  
Photophysical Properties ◽  
Zinc Complexes ◽  
Aggregation Induced Emission

Bis(imino)acenaphthene (BIAN) zinc complexes with para-substituted aryl groups have been synthesized and investigated from the standpoint of their photophysical properties.

Synthesis, structure and photophysical properties of 2-benzhydryl-4-methyl-6-(aryliminomethyl)phenol ligands and the zinc complexes thereof

2012 ◽  
Vol 392 ◽  
pp. 292-299 ◽  
Author(s):  
Zihong Zhou ◽  
Wen Li ◽  
Xiaohua Hou ◽  
Langqiu Chen ◽  
Xiang Hao ◽  
...  
Keyword(s):  
Photophysical Properties ◽  
Zinc Complexes

Influence of para substituents in controlling photophysical behavior and different non-covalent weak interactions in zinc complexes of a phenol based “end-off” compartmental ligand

2015 ◽  
Vol 44 (46) ◽  
pp. 20032-20044 ◽  
Author(s):  
Prateeti Chakraborty ◽  
Jaydeep Adhikary ◽  
Sugata Samanta ◽  
Ishani Majumder ◽  
Chiara Massera ◽  
...  
Keyword(s):  
Weak Interactions ◽  
Photophysical Properties ◽  
Zinc Complexes ◽  
Photophysical Behavior

The role of para substituents of three dinuclear zinc(ii) complexes on the structure, photophysical properties and their different weak interactions is investigated.

Azaphthalocyanines with extended conjugation through heteroaryl and aryl substituents: Photochemical and photophysical properties

2007 ◽  
Vol 11 (02) ◽  
pp. 130-138 ◽  
Author(s):  
Eva H. Mørkved ◽  
Nils Kr. Afseth ◽  
Petr Zimcik
Keyword(s):  
Singlet Oxygen ◽  
Absorption Spectra ◽  
Photophysical Properties ◽  
Point Of View ◽  
Zinc Complexes ◽  
Quantum Yields ◽  
Sterical Hindrance ◽  
20 Nm ◽  
Mg Complexes

Magnesium and zinc complexes of azaphthalocyanines (AzaPc) with eight peripheral aromatic (phenyl) or heteroaromatic (pyridyl, thienyl, furyl) substituents are studied from the point of view of their singlet oxygen (ΦΔ) and fluorescence (Φ F ) quantum yields, and UV-vis absorption spectra. Zn complexes have higher ΦΔ than Mg complexes by a factor of two, whereas the Mg complexes have higher Φ F than Zn complexes, also by a factor of two. Thienyl AzaPc have the highest ΦΔ among all studied substances (0.635 for Zn complex) followed by phenyl and pyridyl derivatives. The order of Φ F values is then reversed - the highest values were reached for pyridyl and phenyl derivatives followed by thienyl AzaPc. Both furyl AzaPc were unstable towards light and decomposed giving very low ΦΔ and Φ F . The Q-bands of the furyl and thienyl AzaPc were red-shifted for approx. 20 nm compared to phenyl and pyridyl derivatives indicating lower sterical hindrance between five-membered rings and thus allowing better conjugation of π-systems. Pyridyl-, thienyl- and furyl-substituted pyrazino[2,3-b]pyrazine-2,3-dicarbonitriles were also prepared but decomposed during attempted cyclotetramerizations.

Anion directed structural diversity in zinc complexes with conformationally flexible quinazoline ligand: structural, spectral and theoretical studies

2016 ◽  
Vol 45 (30) ◽  
pp. 12053-12068 ◽  
Author(s):  
Nidhi Dwivedi ◽  
Sumit Kumar Panja ◽  
Monika Monika ◽  
Satyen Saha ◽  
Sailaja S. Sunkari
Keyword(s):  
Photophysical Properties ◽  
Supramolecular Assembly ◽  
Structural Diversity ◽  
Zinc Complexes ◽  
Theoretical Studies

In this paper, we report the synthesis, and structure of four new complexes of conformationally flexible 6-chloro-4-phenyl-2-(pyridin-2-yl)quinazoline ligand (L) with Zn(ii). Significance of ring twisting on supramolecular assembly and photophysical properties have also been highlighted.

Syntheses and photophysical properties of natural dehydroabietic acid-based ligands and their zinc complexes

2021 ◽  
Vol 1229 ◽  
pp. 129793
Author(s):  
Xu-Min Cai ◽  
Tianqi Mu ◽  
Yuting Lin ◽  
Xuedan Zhang ◽  
Zhenguo Tang ◽  
...  
Keyword(s):  
Photophysical Properties ◽  
Dehydroabietic Acid ◽  
Zinc Complexes

Synthesis, structures and properties of benzoporphycenes and naphthoporphycenes

2011 ◽  
Vol 15 (09n10) ◽  
pp. 930-942 ◽  
Author(s):  
Daiki Kuzuhara ◽  
Hiroko Yamada ◽  
Shigeki Mori ◽  
Tetsuo Okujima ◽  
Hidemitsu Uno
Keyword(s):  
Photophysical Properties ◽  
Alder Reaction ◽  
Diels Alder ◽  
Zinc Complexes ◽  
Quantum Yields ◽  
Free Base ◽  
Pyridine Ligands ◽  
Diels Alder Reaction ◽  
Structures And Properties ◽  
Box Structure

A series of benzoporphycenes and naphthoporphycenes and their zinc complexes were prepared from bicyclo[2.2.2]octadiene fused porphycenes by a retro-Diels-Alder reaction and their photophysical properties were studied. Free-base tetranaphthoporphycene was not soluble in common organic solvents, but zinc tetranaphthoporphycene was slightly soluble in pyridine and showed B- and Q-bands at 507 and 690 nm, respectively. Dinaphthoporphycene showed broad B- and Q-bands due to its lower symmetry. Tetrabenzo-, dibenzo-, and dinaphthoporphycenes showed fluorescence at 673, 654, and 670 nm with quantum yields of 0.32, 0.42, and 0.31, respectively, although their precursors were non-fluorescent. Zinc complexes of tetrabenzo-, dibenzo-, tetranaphtho-, dinaphthoporphycenes and their bicyclo[2.2.2]octadiene-fused precursors revealed moderate fluorescence with quantum yields of 0.15–0.37. The crystal structures of tetrabenzo- and dibenzoporphycenes showed herringbone structures, while the zinc tetrabenzoporphycene showed a hexagonal box-structure with six pyridine ligands inside.

Triarylmethane dye-conjugated hexanuclear zinc complexes: Photophysical properties and cyanide anion-binding behavior

2015 ◽  
Vol 121 ◽  
pp. 372-378 ◽  
Author(s):  
Saori Takeda ◽  
Hiroka Yamada ◽  
Toshiki Mutai ◽  
Isao Yoshikawa ◽  
Hirohiko Houjou
Keyword(s):  
Photophysical Properties ◽  
Zinc Complexes ◽  
Anion Binding ◽  
Cyanide Anion ◽  
Binding Behavior ◽  
Triarylmethane Dye
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