Impact of solvent vapor annealing on the morphology and photophysics of molecular semiconductor thin films
Article Abstract:
The effect of solvent vapor annealing on the fluorescence characteristics and morphology of titanyl phthalocyanine/perylene phenethylimide thin-film molecular semiconductor bilayers (TiOPc/PPEI) was investigated using atomic force microscopy in combination with near-field scanning optical microscopy, bulk absorption and fluorescence measurements. Experimental results showed that treatment of the vacuum-deposited amorphous PPEI and TiOPc/PPEI films leads to the crystalline transformation of these materials and strongly modifies the contact between the TiOPc and PPEI layers. Extended annealing causes a decrease in charge transfer quenching efficiencies.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
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Molecular dynamics simulations in aqueous solution: application to free energy calculation of oligopeptides
Article Abstract:
A study was conducted to characterize a technique for determining thermodynamic parameters with the Poisson-Boltzmann equation and molecular dynamics computations. The method characterizes the solvent effect on the solute conformation as a potential of mean force. Experimental results indicated the consistency of the method with the explicit water framework. Findings also showed that the electrostatic screening effect plays a critical function in the solvent effect.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
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Solvent-controlled theory analysis of chirped pulse excitation of molecules in solutions
Article Abstract:
A simple and physically clear approach to the interaction of intense chirped pulses with large molecules in solutions is developed: time dependent rate equations for integral populations of electronic molecular states. The time-dependent transition rates differ from those of the solvent-controlled theory not only by the time dependence of the transition rates and the activation energies.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2001
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