Luminescence of rhodamine B doped in silica films by evaporation-induced self-assembly

Lanfang Yao; Fengqin Lu; Chunxiao Yue; Fujiang Xie; Feifei Guan

doi:10.1117/12.792186

11 March 2008 Luminescence of rhodamine B doped in silica films by evaporation-induced self-assembly

Lanfang Yao, Fengqin Lu, Chunxiao Yue, Fujiang Xie, Feifei Guan

Proceedings Volume 6984, Sixth International Conference on Thin Film Physics and Applications; 69840A (2008) https://doi.org/10.1117/12.792186
Event: Sixth International Conference on Thin Film Physics and Applications, 2007, Shanghai, China

Abstract

Rhodamine B was embedded in a matrix of mesoporous silica films by the sol-gel method. A precursor sol containing tetraethoxysilane, ethanol, surfactant cetyltrimethylammonium bromide (CTAB), water, rhodamine B and acid catalyst was prepared by sol-gel. Depositing the precursor sol on a substrate wherein evaporation of solvent and water causes the formation of mesostructured films on the substrate surface by evaporation-induced self- assembly process. The nanocomposites films were obtained by embedded rhodamine B in the pores of mesoporous silica films. The mesoporous film was characterized by XRD and TEM, UV-VIS-NIR. The luminescence was measured and a red shift in the peak of the luminescence spectra compared with rhodamine B in the film and rhodamine B in water was observed, which may be interpreted as reflecting a decrease in the dipole moment of the exited molecule. The results show the luminescence action of rhodamine B in nanopores approach to single molecule's. This relates to the restriction of nanopores to organic molecules. The degree of aggregation decreases for the mesoporous silica films may be regarded as a hydroxylic, relatively polar environment, less polar than water although controversy still exists on the role of water in causing aggregation.

Citation Download Citation

Lanfang Yao, Fengqin Lu, Chunxiao Yue, Fujiang Xie, and Feifei Guan "Luminescence of rhodamine B doped in silica films by evaporation-induced self-assembly", Proc. SPIE 6984, Sixth International Conference on Thin Film Physics and Applications, 69840A (11 March 2008); https://doi.org/10.1117/12.792186

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available