scholarly journals Blue highly fluorescent boron difluoride complexes based on phthalazine–pyridine

2016 ◽  
Vol 40 (7) ◽  
pp. 6070-6076 ◽  
Author(s):  
Thi Minh Ha Vuong ◽  
Jennifer Weimmerskirch-Aubatin ◽  
Jean-François Lohier ◽  
Nathalie Bar ◽  
Sophie Boudin ◽  
...  
Keyword(s):  
Quantum Yields ◽  
Synthesis And Characterization ◽  
Boron Complexes ◽  
Boron Difluoride

Synthesis and characterization of three blue fluorescent phthalazine–pyridine boron complexes with quantum yields up to 79%.

Synthesis and Characterization of Boron Complexes of Imidazo[1,5-a]pyridylalkyl Alcohols

2013 ◽  
Vol 42 (8) ◽  
pp. 828-830 ◽  
Author(s):  
Toshiaki Murai ◽  
Eri Nagaya ◽  
Keitaro Miyahara ◽  
Fumitoshi Shibahara ◽  
Toshifumi Maruyama
Keyword(s):  
Synthesis And Characterization ◽  
Boron Complexes

New peripherally substituted lutetium mono and bis phthalocyanines: Synthesis and comparative photophysical and photochemical properties

2019 ◽  
Vol 23 (11n12) ◽  
pp. 1542-1550
Author(s):  
Nagihan Kocaağa ◽  
Öznur Dülger Kutlu ◽  
Ali Erdoğmuş
Keyword(s):  
Mass Spectrometry ◽  
Photodynamic Therapy ◽  
Singlet Oxygen ◽  
Photophysical Properties ◽  
Quantum Yields ◽  
Synthesis And Characterization ◽  
Type Ii ◽  
H Nmr ◽  
Photochemical Properties

In this study, the synthesis and characterization of mono-(phthalocyaninato) lutetium(III) (1-Cl and 1-F) [Lu[Formula: see text](AcO)(Pc)] (Pc [Formula: see text] phthalocyaninato, AcO [Formula: see text] acetate) and bis-(phthalocyaninato) lutetium(III) (2-Cl and 2-Br) [Lu[Formula: see text]Pc[Formula: see text]] bearing halogenated (F, Cl and Br) phenoxy–phenoxy groups are described and verified by IR, [Formula: see text]H-NMR, UV-vis and mass spectrometry. Photochemical and photophysical properties of 1-F, 1-Cl 2-Cl and 2-Br in DMSO are also presented. A comparison between photophysical and photochemical parameters of mono and bis derivatives showed that mono phthalocyanines are better photosensitizers than bis phthalocyanines. Photophysical and photochemical properties of phthalocyanines are very useful for photodynamic therapy applications. Singlet oxygen quantum yields [Formula: see text] give an indication of the potential of the complexes as photosensitizers in photodynamic therapy applications. The chloro, fluoro, bromo-phenoxy–phenoxy substituted mono-(phthalocyaninato) lutetium(III) complexes (1-Cl and 1-F) gave good singlet oxygen quantum yields (from 0.86 to 0.80) in DMSO. Thus, these complexes show potential as Type II photosensitizers for PDT of cancer.

Synthesis and characterization of novel 7-oxy-3-ethyl-6-hexyl-4-methylcoumarin substituted metallo phthalocyanines and investigation of their photophysical and photochemical properties

2019 ◽  
Vol 48 (34) ◽  
pp. 13046-13056 ◽  
Author(s):  
Mücahit Özdemir ◽  
Begümhan Karapınar ◽  
Bahattin Yalçın ◽  
Ümit Salan ◽  
Mahmut Durmuş ◽  
...  
Keyword(s):  
Singlet Oxygen ◽  
Quantum Yields ◽  
Synthesis And Characterization ◽  
Photochemical Properties ◽  
Lipophilic Groups

Coumarin functionalized metallo phthalocyanines shows increased singlet oxygen quantum yields when included lipophilic groups.

Synthesis and Characterization of the Monomeric Platinum(II) Complexes with 2,2’-Bipyridine Back-Bone Ligand

2012 ◽  
Vol 554-556 ◽  
pp. 811-815
Author(s):  
Min Chul Chung ◽  
Woong Kyu Jo ◽  
Seak Hwan Son ◽  
Chee Hun Kwak ◽  
Ji Hoon Lee ◽  
...  
Keyword(s):  
Platinum Complexes ◽  
Quantum Yields ◽  
Synthesis And Characterization ◽  
Blue Region ◽  
Very High

The reaction of platinum(II) complexes of [Pt(bpy-R)Cl2] (R = H; 2,2’-bipyridine(bpy), R = 2(CH)3; 4,4’-dimethyl-2,2’-biypridine (DM-bpy), R = 4(CH3); 3,3’-5,5’-tertamethyl-2,2’-bipyridiyl (TM-bpy), (1-3) or [Pt(1,10-phen-R’)Cl2] (R’ = H; 1,10-phenanthroline(1,10-phen), R’= 4(CH3); 3,4,7,8-tetramethyl-1,10-phenanthroline(3,4,7,8-tetramethyl-1,10-phen) (4-5) with 1,4-bis(5'-2',2"-bipyridine)benzene(bpy-Ph-bpy) affords the following monomeric platinium(II) complexes: [Pt(bpy)(bpy-Ph-bpy)]2+(1), [Pt(DM-bpy)(bpy-Ph-bpy)](2), and [Pt(TM-bpy)(bpy-ph-bpy)]2+(3), [Pt(1,10-phenanthroline)(bpy-ph-bpy)]2+2+(4), [Pt(3,4,7,82+-tetramethyl-1,10-phen)(bpy-ph-bpy)]2+(5), respectively. These complexes were characterized by NMR, IR, UV/VIS and PL spectroscopy of the complexes were elucidated. The internal quantum yields of these platinum complexes are very high (0.13 ~ 0.99) and they emit light in the blue region (360 ~ 417 nm).

scholarly journals Boron difluoride formazanate copolymers with 9,9-di-n-hexylfluorene prepared by copper-catalyzed alkyne–azide cycloaddition chemistry

2016 ◽  
Vol 7 (21) ◽  
pp. 3589-3598 ◽  
Author(s):  
Stephanie M. Barbon ◽  
Joe B. Gilroy
Keyword(s):  
Light Harvesting ◽  
Synthesis And Characterization ◽  
Model Compounds ◽  
Related Model ◽  
Boron Difluoride

The synthesis and characterization of copolymers with promising light-harvesting properties and closely related model compounds based on boron difluoride formazanate and 9,9-di-n-hexylfluorene units are described.

scholarly journals Near-IR absorption and photocurrent generation using a first-of-its-kind boron difluoride formazanate non-fullerene acceptor

2020 ◽  
Vol 4 (6) ◽  
pp. 1643-1647
Author(s):  
Josh D. B. Koenig ◽  
Mahmoud E. Farahat ◽  
Jasveer S. Dhindsa ◽  
Joe B. Gilroy ◽  
Gregory C. Welch
Keyword(s):  
Synthesis And Characterization ◽  
Ir Absorption ◽  
Perylene Diimides ◽  
Photocurrent Generation ◽  
Near Ir ◽  
Boron Difluoride

We report the synthesis and characterization of the first non-fullerene acceptor containing a boron difluoride formazanate core end-capped with N-annulated perylene diimides.

scholarly journals Synthesis and characterization of conjugated/cross-conjugated benzene-bridged boron difluoride formazanate dimers

RSC Advances ◽  
2015 ◽  
Vol 5 (69) ◽  
pp. 56316-56324 ◽  
Author(s):  
Stephanie M. Barbon ◽  
Jacquelyn T. Price ◽  
Umesh Yogarajah ◽  
Joe B. Gilroy
Keyword(s):  
Electrochemical Properties ◽  
Synthesis And Characterization ◽  
Boron Difluoride

A study designed to probe the effect of electronic conjugation and cross-conjugation on the optical and electrochemical properties of benzene-bridged boron difluoride formazanate dimers is presented.

scholarly journals Synthesis and characterization of some new coordination compounds of boron with mixed azines

2007 ◽  
Vol 72 (4) ◽  
pp. 367-374 ◽  
Author(s):  
Manish Godara ◽  
R. Maheshwari ◽  
S. Varshney ◽  
A.K. Varshney
Keyword(s):  
Antifungal Activity ◽  
1H Nmr ◽  
Coordination Compounds ◽  
Spectral Studies ◽  
Synthesis And Characterization ◽  
Elemental Analyses ◽  
Boron Complexes ◽  
11B Nmr

Some new boron complexes have been synthesized by the reaction of triisopropohxyborane with the mixed azines, prepared by the condensation of salicylaldehyde and hydrazine with aldehydes/ketones in a 1:1:1 mole ratio to give a new series of (OPri)2B(NO) type of complexes. Their structures were confirmed on the basis of elemental analyses, ultraviolet, infrared, 1H-NMR and 11B-NMR spectral studies. The ligands and their boron complexes were also screened for their antifungal activity. Several of these complexes were found to be quite active in this respect. .

scholarly journals Benzothiadiazole oligoene fatty acids: fluorescent dyes with large Stokes shifts

2016 ◽  
Vol 12 ◽  
pp. 2739-2747 ◽  
Author(s):  
Lukas J Patalag ◽  
Daniel B Werz
Keyword(s):  
Fatty Acids ◽  
Chain Length ◽  
Fluorescent Dyes ◽  
Quantum Yields ◽  
Synthesis And Characterization ◽  
Absorption Properties ◽  
Fluorescence Quantum Yields ◽  
Degree Of Unsaturation ◽  
Stokes Shifts

Herein, we report on the synthesis and characterization of novel fluorescent fatty acids with large Stokes shifts. Three examples consisting of the same number of carbon atoms and thus of similar chain length are presented differing in their degree of unsaturation. As major fluorogenic contributor at the terminus benzo[c][1,2,5]thiadiazole was used. Respective syntheses based on Wittig reactions followed by iodine-mediated isomerization are presented. The absorption properties are modulated by the number of conjugated C=C double bonds of the oligoene chain ranging from one to three. Large Stokes shifts of about 4900–5700 cm−1 and fluorescence quantum yields of up to 0.44 were observed.

Sign in / Sign up

Export Citation Format

Share Document