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Search for "solvatochromism" in Full Text gives 35 result(s) in Beilstein Journal of Organic Chemistry.

Interactions between photoacidic 3-hydroxynaphtho[1,2-b]quinolizinium and cucurbit[7]uril: Influence on acidity in the ground and excited state

  • Jonas Becher,
  • Daria V. Berdnikova,
  • Darinka Dzubiel,
  • Heiko Ihmels and
  • Phil M. Pithan

Beilstein J. Org. Chem. 2017, 13, 203–212, doi:10.3762/bjoc.13.23

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  • ]. Notably, the chromophore of the oxyanion-substituted quinolizinium derivative 2cB resembles the well-established solvatochromic pyridinium-N-phenolate betaine dyes that are employed as polarity probes [53]. Correspondingly, the derivative 2cB shows a similar positive solvatochromism, i.e., a blue shift of
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Published 01 Feb 2017

Synthesis and fluorosolvatochromism of 3-arylnaphtho[1,2-b]quinolizinium derivatives

  • Phil M. Pithan,
  • David Decker,
  • Manlio Sutero Sardo,
  • Giampietro Viola and
  • Heiko Ihmels

Beilstein J. Org. Chem. 2016, 12, 854–862, doi:10.3762/bjoc.12.84

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  • states. Keywords: fluorescence; heterocycles; quinolizinium; solvatochromism; Introduction Dyes that change their absorption and emission properties, especially their color, in different media are considered as helpful optical probes, because they may be applied for the characterization and
  • consistent picture of the solvatochromism of this class of compounds turned out to be rather difficult. Specifically, different cationic biaryl derivatives (Figure 6) show significantly varying trends regarding the influence of the solvent on the steady-state emission. For example, it was reported that the
  • interplay in the ground and excited state, specifically the resulting delocalization of the charge. Unfortunately, detailed investigations of the steady-state solvatochromism of this class of compounds are rather scarce, so far, as most photophysical studies of 9-aryl-9-methylacridinium or 4-aryl-N
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Published 02 May 2016

Indenopyrans – synthesis and photoluminescence properties

  • Andreea Petronela Diac,
  • Ana-Maria Ţepeş,
  • Albert Soran,
  • Ion Grosu,
  • Anamaria Terec,
  • Jean Roncali and
  • Elena Bogdan

Beilstein J. Org. Chem. 2016, 12, 825–834, doi:10.3762/bjoc.12.81

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  • groups have been found to exhibit good solvatochromism properties and high quantum yields in the solid state why they are considered as important precursors for the fabrication of fluorescent materials [20]. Owing to their exciting photophysical properties many dicyanomethylene pyran-containing
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Published 27 Apr 2016

Star-shaped tetrathiafulvalene oligomers towards the construction of conducting supramolecular assembly

  • Masahiko Iyoda and
  • Masashi Hasegawa

Beilstein J. Org. Chem. 2015, 11, 1596–1613, doi:10.3762/bjoc.11.175

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  • slightly larger nanophase separation in 31. It is worth noting that the self-aggregation of TTF-annulenes results in the appearance of solvatochromism and thermochromism [68]. As shown in Figure 10, 30 exhibits a supramolecular thermochromism in toluene, and the color at −10 °C is reddish purple, whereas
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Published 10 Sep 2015

Synthesis and optical properties of pyrrolidinyl peptide nucleic acid carrying a clicked Nile red label

  • Nattawut Yotapan,
  • Chayan Charoenpakdee,
  • Pawinee Wathanathavorn,
  • Boonsong Ditmangklo,
  • Hans-Achim Wagenknecht and
  • Tirayut Vilaivan

Beilstein J. Org. Chem. 2014, 10, 2166–2174, doi:10.3762/bjoc.10.224

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  • insertion are suggestive of different interactions between the Nile red label and the duplexes. Keywords: click chemistry; deoxyribonucleic acid; DNA bulge; fluorescence; nucleic acids; solvatochromism; Introduction Fluorescent labels are important tools for investigating the structure and dynamics of
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Published 11 Sep 2014

Synthesis and spectroscopic properties of 4-amino-1,8-naphthalimide derivatives involving the carboxylic group: a new molecular probe for ZnO nanoparticles with unusual fluorescence features

  • Laura Bekere,
  • David Gachet,
  • Vladimir Lokshin,
  • Wladimir Marine and
  • Vladimir Khodorkovsky

Beilstein J. Org. Chem. 2013, 9, 1311–1318, doi:10.3762/bjoc.9.147

Graphical Abstract
  • is twisted out of the molecule plane and does not contribute to either orbital. The degree of charge transfer is not large, which accounts for the relatively moderate solvatochromism. The calculated IP and EA values are 7.13 and 0.78 eV, respectively. Derivative 4 should thus exhibit stronger
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Published 03 Jul 2013

Diarylethene-modified nucleotides for switching optical properties in DNA

  • Sebastian Barrois and
  • Hans-Achim Wagenknecht

Beilstein J. Org. Chem. 2012, 8, 905–914, doi:10.3762/bjoc.8.103

Graphical Abstract
  • chromophores to oligonucleotides offers potentially interesting optical characteristics, among these being solvatochromism and red-shifted exciplex-type fluorescence [38]. Such absorption and fluorescence readouts are potentially suitable for DNA probing [39][40][41]. On the other hand, with respect to
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Published 20 Jun 2012

Predicting the UV–vis spectra of oxazine dyes

  • Scott Fleming,
  • Andrew Mills and
  • Tell Tuttle

Beilstein J. Org. Chem. 2011, 7, 432–441, doi:10.3762/bjoc.7.56

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  • illustrated in Figure 1 for clarity. All the dyes are based on an anthracene skeleton in which one carbon is replaced by a nitrogen atom and another by an additional heteroatom such as N, O, or S in the central ring. Although azine dyes have been found to demonstrate solvatochromism [1][2][3], and many
  • thiazine dyes are metachromatic [4][5], this investigation is limited to the study of oxazine dyes. Oxazine dyes are useful partly because they exhibit solvatochromism, this makes them sensitive to their surrounding environment, and hence they have been utilized in various applications as molecular probes
  • [6][7][8]. In the current investigation we focus on the ten oxazine dyes shown in Figure 2, which are readily soluble in aqueous solution, in order to determine the ability of computational methodology to describe the solvent dependence on the absorption maxima. Solvatochromism in oxazine dyes has
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Published 15 Apr 2011

Donor-acceptor substituted phenylethynyltriphenylenes – excited state intramolecular charge transfer, solvatochromic absorption and fluorescence emission

  • Ritesh Nandy and
  • Sethuraman Sankararaman

Beilstein J. Org. Chem. 2010, 6, 992–1001, doi:10.3762/bjoc.6.112

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  • estimated from the electrochemical and spectral data for these derivatives. The HOMO and LUMO surfaces were obtained from DFT calculations. Keywords: charge transfer; fluorescence; solvatochromism; solvent effect; triphenylene; Introduction Fluorescent molecular probes that emit in the visible region and
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Published 18 Oct 2010

Chromo- and fluorophoric water-soluble polymers and silica particles by nucleophilic substitution reaction of poly(vinyl amine)

  • Katja Hofmann,
  • Ingolf Kahle,
  • Frank Simon and
  • Stefan Spange

Beilstein J. Org. Chem. 2010, 6, No. 79, doi:10.3762/bjoc.6.79

Graphical Abstract
  • , β and π*, respectively. corresponds to a standard process, referenced to a nonpolar medium. a, b and s represent solvent-independent regression coefficients which reflect the relative influence of each of the three parameters. UV–vis spectroscopy The solvatochromism of 1-M and 1-P was investigated
  • ][43]. Solvent-independent correlation coefficients a, b and s of the Kamlet–Taft parameters α, β and π*; solute property of the reference system , correlation coefficient (r), standard deviation (sd), number of solvents (n) and significance (f) for the solvatochromism of 1-M and 1-P. Fluorescence
  • (r), standard deviation (sd), number of solvents (n) and significance (f) for the fluoro-solvatochromism of 1-M and 1-P. Acknowledgements Financial support from the Deutsche Forschungsgemeinschaft, Bonn and the delivery of chemicals from the BASF SE, Ludwigshafen, is gratefully acknowledged. The 2,6
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Published 22 Jul 2010
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