XLIX.—Studies in fluorescence spectra. Part II. Phenol and phenolic ether vapours

Marsh, Joseph K.

doi:10.1039/ct9242500418

Cited by 22 publications

(8 citation statements)

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“…Methyl salicylate (78, MS, Chart 15) was the first reported compound in which ESIPT was observed. 513 Weller studied the absorption and emission spectra of this molecule and attributed the dual emission to an excited-state equilibrium between the initially excited neutral species and the zwitterionic tautomer resulting from the ESIPT reaction. 514 The absence of the redshifted emission band in the methylated derivative, methyl 2methoxybenzoate (79), supported this conclusion.…”

Section: Intramolecular Proton Transfermentioning

confidence: 99%

Ultrafast Elementary Photochemical Processes of Organic Molecules in Liquid Solution

et al. 2016

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Ultrafast photochemical reactions in liquids occur on similar or shorter time scales compared to the equilibration of the optically populated excited state. This equilibration involves the relaxation of intramolecular and/or solvent modes. As a consequence, the reaction dynamics are no longer exponential, cannot be quantified by rate constants, and may depend on the excitation wavelength contrary to slower photochemical processes occurring from equilibrated excited states. Such ultrafast photoinduced reactions do no longer obey the Kasha-Vavilov rule. Nonequilibrium effects are also observed in diffusion-controlled intermolecular processes directly after photoexcitation, and their proper description gives access to the intrinsic reaction dynamics that are normally hidden by diffusion. Here we discuss these topics in relation to ultrafast organic photochemical reactions in homogeneous liquids. Discussed reactions include intra- and intermolecular electron- and proton-transfer processes, as well as photochromic reactions occurring with and without bond breaking or bond formation, namely ring-opening reactions and cis-trans isomerizations, respectively.

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Section: Intramolecular Proton Transfermentioning

confidence: 99%

Ultrafast Elementary Photochemical Processes of Organic Molecules in Liquid Solution

et al. 2016

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“…Both L1 and L2 have two bands in the emission spectrum, (L1 at 405 and 450 nm, L2 at 420 and 470 nm, supporting information Figs S26, S27) and in both cases the bands can be preferentially excited by irradiating at different parts of the spectrum (see Table 1). However, in both cases the lower energy excitation excites the lower energy emission, and each band is red-shifted in L2 by 10-15 nm which indicate similar processes operate in each ligand and these bands are tentatively assigned to mixed n/* transitions associated with the veratrole-, (higher energy) 32 and bipyridine-(lower energy) 33 derived portions of the chromophores. L3 shows an emission band with a slight shoulder at ca.…”

Section: Photophysical Propertiesmentioning

confidence: 99%

Tris(rhenium fac-tricarbonyl) Polypyridine Functionalized Cyclotriguaiacylene Ligands with Rich and Varied Emission

et al. 2016

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“…Excited state intramolecular proton transfer (ESIPT) has been a topic of interest for some time [1,2], even more so now that femtosecond spectroscopic techniques have enabled real-time views of the reaction progress [3][4][5][6][7][8][9][10][11][12][13]. The dramatic enhancement of experimental resolution has been paralleled by a steady increase in computing power, accelerating theoretical study [14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Ab initio multiple spawning dynamics of excited state intramolecular proton transfer: the role of spectroscopically dark states

Coe

Martı́nez

2008

Molecular Physics

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Excited state intramolecular proton transfer (ESIPT) and electronic relaxation in o-hydroxybenzaldehyde (OHBA) are simulated using ab initio multiple spawning (AIMS) dynamics, and the results are compared with those obtained for the closely related molecules malonaldehyde and methyl salicylate. The role of electronic state ordering (more specifically, the placement of spectroscopically dark states) is examined in the context of tautomerisation yield. When a state of n* character lies between the optically accessible state and S 0 , the extent of ESIPT is hindered.

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XLIX.—Studies in fluorescence spectra. Part II. Phenol and phenolic ether vapours

Cited by 22 publications

References 0 publications

Ultrafast Elementary Photochemical Processes of Organic Molecules in Liquid Solution

Ultrafast Elementary Photochemical Processes of Organic Molecules in Liquid Solution

Tris(rhenium fac-tricarbonyl) Polypyridine Functionalized Cyclotriguaiacylene Ligands with Rich and Varied Emission

Ab initio multiple spawning dynamics of excited state intramolecular proton transfer: the role of spectroscopically dark states

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