Solvent effect on the spectral properties of dipolar laser dyes: Evaluation of ground and excited state dipole moments

Nagachandra, Kakkabevinahalli Hadagalli; Mannekutla, J.R.; Amarayya, Shivkumar Math; Inamdar, Sanjeev R.

doi:10.5155/eurjchem.3.2.163-171.538

Cited by 14 publications

(3 citation statements)

References 47 publications

(53 reference statements)

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“…Furthermore, the bathochromic shift observed in both absorption and fluorescence spectra (see Table 1 and the Supporting Information) with increasing solvent polarity (compare spectra for solvents that do not donate hydrogen bonds, such as MeCN and DMSO, or compare spectra for different protic solvents, such as MeOH and aqueous buffer) suggests that the fluorescence involves the π→π* transition. Such a solvent effect on the spectral properties of sulforhodamines has been recently reported for the commercial sulforhodamine B and meaningfully interpreted through the evaluation of ground‐ and excited‐state dipole moments of this dye 24. As revealed by fluorescence emission profiles shown in Figure 1 (and those available in the Supporting Information), all these unsymmetrical sulforhodamines exhibit an intense emission peak with a maximum in the range 567–638 nm.…”

Section: Methodssupporting

confidence: 67%

Straightforward Access to Water‐Soluble Unsymmetrical Sulfoxanthene Dyes: Application to the Preparation of Far‐Red Fluorescent Dyes with Large Stokes’ Shifts

Chevalier

Renard

Romieu

2014

Chemistry A European J

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An efficient synthesis of water-soluble unsymmetrical sulforhodamine/sulforhodol fluorophores containing a single julolidine fragment is presented. Owing to their valuable spectral properties in aqueous buffers, these dyes, especially those bearing a free aniline or phenol moiety, are valuable components of fluorogenic probes for a variety of biosensing applications. A further extension of this synthetic methodology to unusual phenols, namely 7-N,N-dialkylamino-4-hydroxy coumarins has enabled us to provide a new family water-soluble dyes of large Stokes' shift with far-red spectral features.

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Section: Methodssupporting

confidence: 67%

Straightforward Access to Water‐Soluble Unsymmetrical Sulfoxanthene Dyes: Application to the Preparation of Far‐Red Fluorescent Dyes with Large Stokes’ Shifts

Chevalier

Renard

Romieu

2014

Chemistry A European J

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“…The variable α represents the solvent hydrogen-bond donor (HBD) acidity and is considered as the solvent's ability to donate a proton in a solvent-to-solute hydrogen bond. The variable β represents solvent hydrogen-bond acceptor (HBA) basicity and is considered as the solvent's ability to accept a proton in a solute-to-solvent hydrogen bond [48,49]. The correlation coefficients, MCCs, are greater than 0.5 in absorption and emission spectra (except for compound IV in absorption spectra), revealing the applicability of Kamlet- Taft Tables 13 and 14.…”

Section: Kamlet and Taft Methodsmentioning

confidence: 99%

Solvatochromic absorption and fluorescence studies of adenine, thymine and uracil thio-derived acyclonucleosides

et al. 2015

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Adenine, thymine and uracil thio-derived acyclonucleosides were synthesized and characterized by UV-Vis, FT-IR, 1 H and 13 C NMR spectroscopic techniques. The photophysical properties of the derivatives were evaluated in solvents with diverse polarities and at various pH values. The solvent dependent absorbance and emission spectral shifts were analysed using physical parameters of the selected solvents. The regression and correlation coefficients were calculated using multiple regression techniques. The fitting coefficients gave an estimate of the contribution of each interaction to the total spectral shift in various solutions. Multiple linear regression studies, Kamlet-Taft equation and stokes shift correlation with orientation polarizability provide valuable information concerning spectroscopic characteristics of the studied molecules.

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“…To provide the inks with luminescent properties, two different dyes were employed: (i) fluorescein 27 (F27), a luminescent dye having an emission centered at 520 nm (green light) [48,49]; and (ii) Rhodamine B, which strongly absorbs in the green and emits light in the orange-red region of the spectrum, centered at 585 nm [50]. F27 and Rhodamine B were purchased from Lambda Physic under the references Lambdachrome LC 5530 and LC6100, respectively.…”

Section: Methodsmentioning

confidence: 99%

Optical Planar Waveguide Sensor with Integrated Digitally-Printed Light Coupling-in and Readout Elements

Alamán

López-Valdeolivas

Alicante

et al. 2019

Sensors

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Optical planar waveguide sensors, able to detect and process information from the environment in a fast, cost-effective, and remote fashion, are of great interest currently in different application areas including security, metrology, automotive, aerospace, consumer electronics, energy, environment, or health. Integration of networks of these systems together with other optical elements, such as light sources, readout, or detection systems, in a planar waveguide geometry is greatly demanded towards more compact, portable, and versatile sensing platforms. Herein, we report an optical temperature sensor with a planar waveguide architecture integrating inkjet-printed luminescent light coupling-in and readout elements with matched emission and excitation. The first luminescent element, when illuminated with light in its absorption band, emits light that is partially coupled into the propagation modes of the planar waveguide. Remote excitation of this element can be performed without the need for special alignment of the light source. A thermoresponsive liquid crystal-based film regulates the amount of light coupled out from the planar waveguide at the sensing location. The second luminescent element partly absorbs the waveguided light that reaches its location and emits at longer wavelengths, serving as a temperature readout element through luminescence intensity measurements. Overall, the ability of inkjet technology to digitally print luminescent elements demonstrates great potential for the integration and miniaturization of light coupling-in and readout elements in optical planar waveguide sensing platforms.

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Solvent effect on the spectral properties of dipolar laser dyes: Evaluation of ground and excited state dipole moments

Cited by 14 publications

References 47 publications

Straightforward Access to Water‐Soluble Unsymmetrical Sulfoxanthene Dyes: Application to the Preparation of Far‐Red Fluorescent Dyes with Large Stokes’ Shifts

Straightforward Access to Water‐Soluble Unsymmetrical Sulfoxanthene Dyes: Application to the Preparation of Far‐Red Fluorescent Dyes with Large Stokes’ Shifts

Solvatochromic absorption and fluorescence studies of adenine, thymine and uracil thio-derived acyclonucleosides

Optical Planar Waveguide Sensor with Integrated Digitally-Printed Light Coupling-in and Readout Elements

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