Reconstructing the Solvation Time Correlation Function from the Time-Dependent Fluorescence Stokes Shift.

Harju, Timo; Huizer, A. Herbert; Varma, Cyril A. G. O.; Songstad, Jon

doi:10.3891/acta.chem.scand.49-0829

Cited by 11 publications

(16 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The solvation dynamics of the phthalimides have been investigated earlier by many workers, 16,19,26,29,30 because phthalimides are the basic dyes in solvation dynamic studies. Especially 4-aminophthalimide has interested many researchers.…”

Section: Resultsmentioning

confidence: 99%

“…Especially 4-aminophthalimide has interested many researchers. 16,19,29,30 Also, 3-AP, 29 3-amino-N-methylphthalimide ͑3-ANMP͒, 26 and 4-ANMP 26 have been studied before. In our research we have studied the solvation dynamics of 4-amino-N-methyl-phthalimide, which has not been properly studied yet, 26 especially at low temperatures.…”

Section: Resultsmentioning

confidence: 99%

“…A more detailed description of this method may be found elsewhere, 19 where the method has been used in solvation dynamics studies of 4-AP. Shortly, the method of Harju et al 19 is based on a pseudo-two-state model, where the solvation process is considered as a transition from the initial state of solvation to a final state of solvation.…”

Section: A the Solvation Dynamics And C(t) Measurementsmentioning

confidence: 99%

“…There have been at least three different approaches to study solvation dynamics: theoretical studies 1-7 computer simulations, 3,6,[8][9][10][11][12][13] and experimental studies. 10,[14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30] Many theories, which have been developed to solvation dynamics, can be tested through a comparison of computer simulations and experimental measurements. Because theoretical treatment of dynamics in dense polar liquids is a very complicated problem, simplifying approximations are commonly used and idealized model systems are being studied.…”

Section: Introductionmentioning

confidence: 99%

“…This time-dependent Stokes shift and up-conversion technique may be used to evaluate the socalled shift correlation function that is related to the average solvation kinetics. 24 Solvents like alcohols, 10,16,19,20,23,24,26,[28][29][30]33 glycols, 29 glycerol, 29 nitriles, 16,17,[23][24][25]27,33 acetates, 21,24,31 triglyme, 25 nitrobenzene, 33 dimethylsulfoxide ͑DMSO͒, 10,16,23,25,33 amides, 16,23 propylene carbonate, 16,[22][23][24][25] tetrahydrofuran, 16 acetone, 16,23 butylcloride, 20 toluene, 29 water, 23 and micelles 18 have been reported in solvation kinetics studies. As internal fluorescence probes phthalimides: 4-AP, 16,19,29,30...…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Solvation dynamics study of 4-amino-N-methyl-phthalimide in n-alcohol solutions

Laitinen

Salonen

Harju

1996

The Journal of Chemical Physics

View full text Add to dashboard Cite

We have studied the solvation dynamics of 4-amino-N-methyl-phthalimide ͑4-ANMP͒ in n-butanol and n-decanol solutions. Solvation time correlation functions were evaluated from wavelength-dependent fluorescence lifetime distributions at two temperatures for the two solvents. Solvation dynamics of 4-ANMP was strongly temperature dependent in n-butanol, which is a more polar and less viscous solvent than n-decanol. A smaller effect was observed in n-decanol solution. We also measured the rotational correlation times of 4-ANMP in the same solutions and resolved two components indicative of a nonspherical structure of the molecule. The solvation times with relation to the dielectric relaxation times L and D for linear alcohols are discussed.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: A the Solvation Dynamics And C(t) Measurementsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Solvation dynamics study of 4-amino-N-methyl-phthalimide in n-alcohol solutions

Laitinen

Salonen

Harju

1996

The Journal of Chemical Physics

View full text Add to dashboard Cite

show abstract

Design of Weak‐Donor Alkyl‐Functionalized Push–Pull Pyrene Dyes Exhibiting Enhanced Fluorescence Quantum Yields and Unique On/Off Switching Properties

Niko

Sasaki

Kawauchi

et al. 2014

Chemistry An Asian Journal

View full text Add to dashboard Cite

We designed, synthesized, and evaluated environmentally responsive solvatochromic fluorescent dyes by incorporating weak push-pull moieties. The quantum yields of the push (alkyl)-pull (formyl) pyrene dyes were dramatically enhanced by the introduction of alkyl groups into formylpyrene (1-formylpyrene: Φ(F) =0.10; 3,6,8-tri-n-butyl-1-formylpyrene: Φ(F) =0.90; in MeOH). The new dyes exhibited unique sensitivity to solvent polarity and hydrogen-bond donor ability, and specific fluorescence turn-on/off properties (e.g., 3,6,8-tri-n-butyl-1-formylpyrene: Φ(F) =0.004, 0.80, 0.37, and 0.90 in hexane, chloroform, DMSO, and MeOH, respectively). Here, the alkyl groups act as weak donors to suppress intersystem crossing by destabilizing the HOMOs of 1-formylpyrene while maintaining weak intramolecular charge-transfer properties. By using alkyl groups as weak donors, environmentally responsive, and in particular, pH-responsive fluorescent materials may be developed in the future.

show abstract

Solvatochromic Pyrene Analogues of Prodan Exhibiting Extremely High Fluorescence Quantum Yields in Apolar and Polar Solvents

Niko

Kawauchi

Konishi

2013

Chemistry A European J

145

View full text Add to dashboard Cite

True colors: Novel pyrene analogues of Prodan exhibit outstanding photophysical properties with remarkably high fluorescence quantum yield (QY) in solvents ranging from apolar hexane to polar methanol (see figure). This is accompanied by strong solvatochromism and large Stokes shifts. These properties have not been previously achieved in enormous solvatochromic dyes, but are quite useful for emitting materials and imaging tools.

show abstract

Reconstructing the Solvation Time Correlation Function from the Time-Dependent Fluorescence Stokes Shift.

Cited by 11 publications

References 0 publications

Solvation dynamics study of 4-amino-N-methyl-phthalimide in n-alcohol solutions

Solvation dynamics study of 4-amino-N-methyl-phthalimide in n-alcohol solutions

Design of Weak‐Donor Alkyl‐Functionalized Push–Pull Pyrene Dyes Exhibiting Enhanced Fluorescence Quantum Yields and Unique On/Off Switching Properties

Solvatochromic Pyrene Analogues of Prodan Exhibiting Extremely High Fluorescence Quantum Yields in Apolar and Polar Solvents

Contact Info

Product

Resources

About