Photochemical reactions in organized assemblies. 37. Photochemistry and photophysics of surfactant trans-stilbenes in supported multilayers and films at the air-water interface

Mooney, William F.; Brown, P. E.; Russell, Jill; Costa, S. B.; Pedersen, L. G.; Whitten, David G.

doi:10.1021/ja00331a041

Cited by 128 publications

(45 citation statements)

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“…Recently, the combination of amphiphilic and mesogenic properties of thermotropic LCs has been realized, and spreading experiments at the air-water interface were performed [3][4][5][6][7]. In addition, the functionalization of amphiphilic compounds led to the incorporation of rod-shaped mesogenic units in amphiphiles, such as biphenyl [6,8], stilbene [9,10], azobenzene [11][12][13][14], benzylidenaniline [15] or bipyridine [16,17]. In these compounds the rod-shaped units function as chromophores, fluorescence markers or highly polarizable units.…”

Section: Self-organisation Of Amphiphiles and Mesogensmentioning

confidence: 99%

Monolayers of rod-shaped and disc-shaped liquid crystalline compounds at the air-water interface

Albrecht

Cumming

Kreuder

et al. 1986

Colloid & Polymer Sci

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Monolayers of rod-shaped and disc-shaped liquid crystalline compounds at the air-water interface Abstract: Calamitic (rod-shaped) and discotic (disc-shaped) thermotropic liquid crystalline (LC) compounds were spread at the air-water interface, and their ability to form monolayers was studied. The calamitic LCs investigated were found to form monolayers which behave analogously to conventional amphiphiles such as fatty acids. The spreading of the discotic LCs produced monolayers as well, but with a behaviour different from classical amphiphiles. The areas occupied per molecule are too small to allow the contact of all hydrophilic groups with the water surface and the packing of all hydrophobic chains. Various molecular arrangements of the discotics at the water surface to fit the spreading data are discussed. U n i v e r s i t ä t P o t s d a m

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Section: Self-organisation Of Amphiphiles and Mesogensmentioning

confidence: 99%

Monolayers of rod-shaped and disc-shaped liquid crystalline compounds at the air-water interface

Albrecht

Cumming

Kreuder

et al. 1986

Colloid & Polymer Sci

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“…(b) and (c), respectively) are fairly consistent with those for 4 B 4 A (fig. 5 in the work of Mooney et al …”

Section: Resultsmentioning

confidence: 96%

“…The highly complex forces governing the establishment of supramolecular assemblies make the painstaking work of Whitten and coworkers toward elucidating the photophysics behind the aggregation of α,ω‐diphenylpolyenes (DPPs) in surfactant assemblies worth especial praise. These authors examined the UV–Vis spectral properties of multilayered fatty acid derivatives of the DPPs t ‐stilbene, diphenylbutadiene ( DPB ), and diphenylhexatriene ( DPH ), constructed by using the Langmuir–Blodgett technique, and ascribed the spectral properties of the derivatives to “H” aggregates.…”

Section: Introductionmentioning

confidence: 99%

On the dimerization of unsubstituted α,ω-diphenylpolyenes at low concentrations in inert solvents

Catalán

2016

J. Phys. Org. Chem.

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As shown here, unsubstituted diphenylpolyenes such as trans‐stilbene, 1,4‐diphenyl‐1,3‐butadiene, 1,6‐diphenyl‐1,3,5‐hexatriene (DPH), and 1,8‐diphenyl‐1,3,5,7‐octatetraene (DPO) dimerize in appropriate inert solvents such as 2‐methylbutane (2MB) and methylcyclohexane (MeCyh). The UV–Vis absorption spectra for these dimeric associations partially confirm the assignations of Whitten and coworkers based on multilayered sets of polyene derivatives constructed by using the Langmuir–Blodgett technique. As also shown here, DPH and DPO dimeric associates in 2MB are undetectable by UV–Vis absorption spectroscopy, and so are those formed in MeCyh‐rich 2MB/MeCyh mixtures, where they are the prevalent forms of the two diphenylpolyenes. Copyright © 2016 John Wiley & Sons, Ltd.

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“…The photoisomerization in linear polyenes is highly regioselective and is much influenced by substitutent, polarity of the medium [28][29][30][31][32][58][59][60][61][62][63][64][65][66][67][68][69][70][71][72][73] and dipolar nature of the excited state [74][75][76][77][78]. Various mechanistic models have been proposed to understand the photoisomerization process of retinyl and related polyenes.…”

Section: Cistrans-photoisomerization Of Diphenylpolyenesmentioning

confidence: 99%

Donor-Acceptor Conjugated Linear Polyenes: A Study of Excited State Intramolecular Charge Transfer, Photoisomerization and Fluorescence Probe Properties

Hota

Singh

2014

J Fluoresc

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Numerous studies of donor-acceptor conjugated linear polyenes have been carried out with the goal to understand the exact nature of the excited state electronic structure and dynamics. In this article we discuss our endeavours with regard to the excited state intramolecular charge transfer, photoisomerization and fluorescence probe properties of various donor-acceptor substituted compounds of diphenylpolyene [Ar(CH = CH) Ar] series and ethenylindoles.

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Photochemical reactions in organized assemblies. 37. Photochemistry and photophysics of surfactant trans-stilbenes in supported multilayers and films at the air-water interface

Cited by 128 publications

References 0 publications

Monolayers of rod-shaped and disc-shaped liquid crystalline compounds at the air-water interface

Monolayers of rod-shaped and disc-shaped liquid crystalline compounds at the air-water interface

On the dimerization of unsubstituted α,ω-diphenylpolyenes at low concentrations in inert solvents

Donor-Acceptor Conjugated Linear Polyenes: A Study of Excited State Intramolecular Charge Transfer, Photoisomerization and Fluorescence Probe Properties

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