The support of NoE FAME and Fundação para a Ciência e Tecnologia (FCT; POCTI/P/CTM/46780/02 and POCI/CTM/59075/04) is gratefully acknowledged. The authors thank A. L. L. Videira for fruitful discussions and a critical revision of the manuscript. The collaboration of H. D. Burrows in the discussion of the thermodynamics of monoamidosil self-assembly, S. S. Nobre in the photoluminescence detection, J. Cybinska in the quantum-yield measurements, and K. Dahmouche and LNLS staff during SAXS measurements is gratefully acknowledged. S. C. N. and N. J. O. S. thank the FCT for grants SFRH/BD/13559/03 and SFRH/BD/10383/02, respectively.
Nanoscopic Photoluminescence Memory as a Fingerprint of Complexity in Self-Assembled Alkyl/Siloxane Hybrids†
Article first published online: 9 JAN 2007
Copyright © 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Volume 19, Issue 3, pages 341–348, February, 2007
How to Cite
Carlos, L. D., de Zea Bermudez, V., Amaral, V. S., Nunes, S. C., Silva, N. J. O., Sá Ferreira, R. A., Rocha, J., Santilli, C. V. and Ostrovskii, D. (2007), Nanoscopic Photoluminescence Memory as a Fingerprint of Complexity in Self-Assembled Alkyl/Siloxane Hybrids. Adv. Mater., 19: 341–348. doi: 10.1002/adma.200601435
- Issue published online: 29 JAN 2007
- Article first published online: 9 JAN 2007
- Manuscript Revised: 9 OCT 2006
- Manuscript Received: 28 JUN 2006
- NoE FAME and Fundação para a Ciência e Tecnologia. Grant Numbers: POCTI/P/CTM/46780/02, POCI/CTM/59075/04
- FCT. Grant Numbers: SFRH/BD/13559/03, SFRH/BD/10383/02
- Hierarchical structures;
- Self assembly;
A thermally activated photoluminescence memory effect, induced by a reversible order–disorder phase transition of the alkyl chains, is reported for highly organized bilayer alkyl/siloxane hybrids (see figure; left at room temperature, right at 120 °C). The emission energy is sensitive to the annihilation/formation of the hydrogen-bonded amide–amide array displaying a unique nanoscopic sensitivity (ca. 150 nm).