New luminophors based on the binuclear helicates of d-METALS with BIS(DIPYRRIN)S

Theoretical studies on the electronic structure and spectroscopic properties of transition metals bis(dipyrrinate)s

“…The observed pattern is in good agreement with experimentally observed trends on changing the fluorescence quantum yield (ϕ) of [M 2 L 2 ] helicates [5,29,30]. According to the literature [5,41] To assess the influence of the nature of the solvent on the change of spectral-luminescent properties of the complexes under study, the molecular orbitals of HOMO and LUMO for [Zn 2 (I) 2 ], [Zn 2 (II) 2 ] and [Zn 2 (III) 2 ] molecules were analysed by TD-DFT/B3LYP/Def2-SVP. The PCM using dielectric constants of cyclohexane, acetone, DMF, DMSO and triethylamine was used to evaluate the influence of the solvent.…”

“…Replacement of 3,3'-bis(dipyrrin) on 2,3'-and 2,2'-isomers causes a significant red shift (to ∼31 nm) of S 0 -S 1 band maximum. Comparison of the experimental absorption spectra shown in Figure 5 and in the works [5,40,41], with theoretically calculated data (Table 1), allows to conclude that absorption bands are caused by two electronic transitions of π--π * type (S 0 -S 1 , S 0 -S 2 , S 0 -S 1 ) with high intensity (f ∼ 0.3-3.7). The divergence between the measured and calculated maximum of the long-wavelength bands in the absorption spectra of Table 2.…”

On the Aggregation Behaviour and Spectroscopic Properties of Alkylated and Annelated Boron‐Dipyrromethene (BODIPY) Dyes in Aqueous Solution

“…Their synthetic versatility and outstanding spectroscopic properties, especially their remarkably intense emission which is tunable across a considerably broad spectral range, from the visible to the near infrared (NIR), are the major reasons for this success. Among other popular dyes such as fluoresceins, rhodamines and cyanines, the applications and investigations involving BODIPYs have grown disproportionately high over the last two decades (Figure ) and the literature reporting the synthesis of new BODIPYs and a description of their optical and chemical properties in organic media is abundant . However, rather few efforts have been devoted to the study of their properties in aqueous solutions .…”

“…Among other popular dyes such as fluoresceins, rhodamines and cyanines, the applications and investigations involving BODIPYs have grown disproportionately high over the last two decades (Figure 1) and the literature reporting the synthesis of new BODIPYs and a description of their optical and chemical properties in organic media is abundant. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17] However, rather few efforts have been devoted to the study of their properties in aqueous solutions. [18][19][20][21][22][23][24][25][26][27][28] This is surprising because on one hand the peculiarities of the application of BODIPYs in water are long since documented even by commercial suppliers [29] yet on the other hand many of the aspired applications such as fluorescence labeling or sensing essentially require operation in aqueous solution.…”

Functional Supramolecular Architectures of Dipyrrin Complexes

“…In addition, the BODIPYs are applied to laser dyes, photovoltaics, electrochemical luminescent materials, bio-imaging, and photodynamic therapy (Ortiz et al, 2010 ; Benstead et al, 2011 ; Awuah and You, 2012 ; Boens et al, 2012 ; Kamkaew et al, 2013 ; Bessette and Hanan, 2014 ; Ni and Wu, 2014 ; Singh and Gayathri, 2014 ; Zhao et al, 2015 ; Antina et al, 2016 ). These attractive functions of BODIPY and other dipyrrin complexes encouraged us and other researchers to incorporate the dipyrrin complexes into the frameworks of the supramolecular self-assemblies (Shin et al, 2010 ; Antina et al, 2015 ).…”