Enhanced luminescence of silver nanoclusters in mesoporous film

Chemical Growth and Photochromism of Silver Nanoparticles into a Mesoporous Titania Template

“…Mesoporous materials are characterized by a high specific surface area and controlled pore diameter. − Mesoporous titania films are prepared by using structure-directing block copolymers and the evaporation-induced self-assembly strategy. , Such films, which have very high specific surface area and a controlled porosity in the range 5−15 nm, are often considered as a way to adjust electronic, optical, or catalytic properties. − Mesoporous titania has already been used to grow metallic nanoparticles within their porosity, classically by reduction of an ionic precursor inside the pores by UV radiation, − through an electrochemical process, , a thermal route, , or very recently, by using the formaldehyde process . Besides the enhanced catalytic properties and the antimicrobial activity, new physical properties are expected from the interaction between Ag and TiO 2 , for instance, for single molecule spectroscopy and biological objects visualization. − …”

Optical and photoluminescent properties of Ag/Al2O3 nanocomposite films obtained by pulsed laser deposition

“…Silver nanoparticles (NP), clusters and composite nanostructures based on them demonstrate local surface plasmon resonance (LSPR) [1][2][3], luminescence in the visible spectral range [2][3][4][5][6][7][8], photochromism [2], which opens wide possibilities to study distinctive optical properties of nanoparticles as compared to those in bulk objects as well as to use them in various applications from biosensors to informatics and storage devices. Excitation of LSPR results in creation of strong local fields around the nanoparticles, which causes enhancement of Raman scattering, luminescence, optical non-linearity, etc.…”

“…Developed also were the ways to prepare metaldielectric composites, the so-called nanocermets, by ion implantation, sol-gel technologies, magnetron sputtering of targets, etc. Prepared were glasses with Ag NP [3,9], also formed were Ag NP in TiO 2 matrix [2,7,8]. There are only single works where the method of pulsed laser deposition (PLD) was used to prepare thin nanocomposite films containing Ag nanocrystals embedded into Al 2 O 3 matrix [12,13].…”

Formation mechanism of robust silver nanoparticle film with superhydrophobicity

“…3 A large number of studies have been devoted to the preparation of noble metal nanoparticles in order to utilize surface-plasmon-derived electric-field enhancements for the amplification of optical signals, such as fluorescence, Raman scattering, and second-harmonic generation. [4][5][6][7][8] In addition, the preparation of thin films composed of noble metal nanoparticles is one of hot interests in recent years. 9 In numerous applications water repellent surfaces are highly desirable.…”