Synthesis and Photophysical Properties of a Novel Water-Soluble, Calixarene-Containing Polymer

1996 ◽  
Vol 29 (2) ◽  
pp. 617-624 ◽  
Author(s):  
D. M. Gravett ◽  
J. E. Guillet
2019 ◽  
Vol 29 (5) ◽  
pp. 1143-1152 ◽  
Author(s):  
Seda Çetindere ◽  
Elif Okutan ◽  
Süreyya Oğuz Tümay ◽  
Serkan Yeşilot ◽  
Adem Kılıç

2001 ◽  
Vol 350 (3-4) ◽  
pp. 198-205 ◽  
Author(s):  
Sarah Foley ◽  
Susanna Bosi ◽  
Christain Larroque ◽  
Maurizio Prato ◽  
Jean-Marc Janot ◽  
...  

2019 ◽  
Vol 4 (20) ◽  
pp. 6377-6381 ◽  
Author(s):  
Alexey P. Krinochkin ◽  
Dmitry S. Kopchuk ◽  
Grigory A. Kim ◽  
Il'ya N. Ganebnykh ◽  
Igor S. Kovalev ◽  
...  

RSC Advances ◽  
2018 ◽  
Vol 8 (31) ◽  
pp. 17224-17236 ◽  
Author(s):  
Anastasia I. Solomatina ◽  
Shih-Hao Su ◽  
Maria M. Lukina ◽  
Varvara V. Dudenkova ◽  
Vladislav I. Shcheslavskiy ◽  
...  

Novel water-soluble iridium complexes with sulfonated diphosphine allow in vitro and in vivo lifetime hypoxia imaging.


2021 ◽  
Author(s):  
Svetlana S. Ivanova ◽  
Denis S Salnikov ◽  
Gleb Knorr ◽  
Olesja Ledovich ◽  
Valery Sliznev ◽  
...  

Novel water-soluble dihydroxophosphorus(V) complexes of sulphophenyl substituted porphyrazine (6), corrolazine (7) and its pyrazine fused derivative (8) have been prepared and their spectral, acid-base and photophysical properties in aqueous solutions...


1997 ◽  
Vol 41 (3) ◽  
pp. 227-232 ◽  
Author(s):  
Daniel A. Fernández ◽  
Josefina Awruch ◽  
Lelia E. Dicelio

2014 ◽  
Vol 12 (3) ◽  
pp. 403-415 ◽  
Author(s):  
Mopelola Idowu ◽  
Yasin Arslanoğlu ◽  
Tebello Nyokong

AbstractPeripherally and non-peripherally tetrasubstituted-[(N-methyl-2-pyridylthio)]phthalocyaninato magnesium (II) (5 and 6) and chloro aluminium (III) (7 and 8) tetraiodide have been synthesized and characterized. The photophysical properties of the complexes in dimethyl sulfoxide (DMSO) and aqueous medium in the presence and absence of cremophore EL have been studied. These complexes show high solubility in aqueous medium though they were aggregated. The triplet state quantum yields (FT) and the triplet lifetimes (tT) were found to be higher in DMSO with ΦT ranging from 0.32 to 0.51, while tT ranged from 282 to 622 ms in DMSO, compared to aqueous medium (pH 7.4 buffer) where ΦT ranged from 0.15 to 0.19 and tT from 26 to 35 ms. Addition of cremophore EL in aqueous solution resulted in partial disaggregation and increased photoactivity. The fluorescence lifetimes of the complexes showed strong dependence on their immediate environment. The ionic magnesium(II) and aluminium(III) phthalocyanines strongly bind to bovine serum albumin (BSA).


2006 ◽  
Vol 10 (01) ◽  
pp. 33-42 ◽  
Author(s):  
Myriam E. Rodriguez ◽  
Daniel A. Fernández ◽  
Josefina Awruch ◽  
Silvia E. Braslavsky ◽  
Lelia E. Dicelio

The photophysical properties of tetrakis(1,1-dimethyl-2-trimethylammonium)ethylphthalocyaninato zinc(II) tetraiodide (I) – a water-soluble cationic phthalocyanine – are presented in the presence of human serum albumin (HSA) and in micelles of sodium dodecylsulfate ( SDS ) and hexadecyltrimethylammonium chloride ( CTAC ). Spectrophotometric measurements showed that the surfactants SDS and CTAC induce monomerization of I, although the latter less efficiently than the former. This effect is less pronounced in the presence of HSA. The strength of this effect is evaluated through dimerization constants, which are Kd = (5 ± 1) × 105 m−1 in SDS , (1.5 ± 0.5) × 106 M −1 in CTAC , and (1.8 ± 0.9) × 106 M −1 in HSA. Fluorescence experiments confirm that aggregation of I drops as the concentration of surfactant is raised. Triplet quantum yields also decreased upon aggregation and were Φ T = 0.59, 0.16, and < 0.01 in SDS , CTAC , and HSA, respectively. These results indicate that the affinity of I for the environment is not just due to ionic interactions; hydrophobic interactions play an equally important role.


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