Synthesis of amino acid block-copolymer imprinted chiral mesoporous silica and its acoustically-induced optical Kerr effects

Journal Article · Wed Aug 15 04:00:00 EDT 2012 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/J.JSSC.2012.03.058· OSTI ID:22131111

Paik, Pradip ^[1]; Mastai, Yitzhak ^[2]; Kityk, Iwan; Rakus, Piort ^[3]; Gedanken, Aharon ^[2]

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1. Department of Materials Engineering and Nanoscience and Technology, School of Engineering Sciences and Technology, University of Hyderabad, Central University P.O., Gachibowli, Hyderabad 500046, AP (India)
2. Institute for Nanotechnology and Advanced Materials, Department of Chemistry, Bar-Ilan University, 52900 (Israel)
3. Electrical Engineering Department, Czestochowa University Technology, Armii Krajowej 17, Czestochowa (Poland)

Chiral mesoporous SiO{sub 2} (CMS) have been synthesized and studied the Acoustically-Induced Optical Kerr Effects (AIOKE) and the results have been compared with non-chiral mesoporous silica. The CMS with controllable pore sizes (of {approx}3 nm) and high surface areas of ca. 650 m{sup 2}g{sup -1} was synthesized by mimicking the intrinsic chirality of the amino acid block copolymers. The chiral mesoporous materials were characterized through HRTEM, BET, small-angle XRD, {sup 29}Si-NMR and circular dichroism. AIOKE measurements have been performed using an Er:glass 20 ns laser with a 10 Hz frequency repetition. The optimal AIOKE results of the CMS were achieved for 9.7% of the chromophore in the matrices. We found that the AIOKE for the CMS mimicked with chiral block copolymers is quite high compared to the non-chiral SiO{sub 2}. A difference in AIOKE for these two compounds is observed, enabling CMS that can be used for the design of the acoustically-operated quantum electronic devices. - Graphical abstract: Novel chiral mesoporous SiO{sub 2} (CMS) is showing Acoustically-Induced Optical Kerr Effects (AIOKE). Different in AIOKE of two mesoporous materials is observed, enabling CMS can be used for the design of the acoustically-operated quantum electronic devices.Highlights: Black-Right-Pointing-Pointer Chiral mesoporous SiO{sub 2} (CMS) synthesized with amino acid block copolymers. Black-Right-Pointing-Pointer The Acoustically-induced Optical Kerr Effects (AIOKE) of chiral mesoporous SiO{sub 2} studied. Black-Right-Pointing-Pointer AIOKE very high for CMS compared to non chiral SiO{sub 2}. Black-Right-Pointing-Pointer CMS can be used in acoustically-operated quantum electronic devices.

• OSTI ID: 22131111
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Vol. 192; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
AMINO ACIDS
CHEMICAL PREPARATION
CHIRALITY
COPOLYMERS
NANOSTRUCTURES
NUCLEAR MAGNETIC RESONANCE
QUANTUM ELECTRONICS
SILICA
SILICON 29
SILICON OXIDES
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION