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Pariani G, Bianco A, Castagna R, et al. Kinetics of photochromic conversion at the solid state: quantum yield of dithienylethene-based films. J Phys Chem A. 2011;115(44):12184-93doi: 10.1021/jp207210p.
Pariani, G., Bianco, A., Castagna, R., & Bertarelli, C. (2011). Kinetics of photochromic conversion at the solid state: quantum yield of dithienylethene-based films. The journal of physical chemistry. A, 115(44), 12184-93. https://doi.org/10.1021/jp207210p
Pariani, Giorgio, et al. "Kinetics of photochromic conversion at the solid state: quantum yield of dithienylethene-based films." The journal of physical chemistry. A vol. 115,44 (2011): 12184-93. doi: https://doi.org/10.1021/jp207210p
Pariani G, Bianco A, Castagna R, Bertarelli C. Kinetics of photochromic conversion at the solid state: quantum yield of dithienylethene-based films. J Phys Chem A. 2011 Nov 10;115(44):12184-93. doi: 10.1021/jp207210p. Epub 2011 Oct 14. PMID: 21939221.
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J Phys Chem A. 2011 Nov 10;115(44):12184-93. doi: 10.1021/jp207210p. Epub 2011 Oct 14.

Kinetics of photochromic conversion at the solid state: quantum yield of dithienylethene-based films.

The journal of physical chemistry. A

Giorgio Pariani, Andrea Bianco, Rossella Castagna, Chiara Bertarelli

Affiliations

  1. Dipartimento di Chimica, Materiali e Ingegneria Chimica G. Natta, Politecnico di Milano, Milano, Italy. [email protected]

PMID: 21939221 DOI: 10.1021/jp207210p

Abstract

Quantum yield is one of the most important properties of photochromic systems. Unfortunately, a lack of data at the solid state exists, because measurements are intrinsically not straightforward. A kinetic model describing the conversion of the photoactive species is reported and both analytic and numeric solutions are provided according to relevant cases. The model is then applied to measure the quantum yield of dithienylethene-based polymers; the ring-opening quantum yield is measured for different laser beam profiles (i.e., Gaussian and uniform) and at different wavelengths, showing an increased value with increasing photon energy.

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