Synthesis of fluorescent carboxylic acid ligands for construction of monolayers on nanostructures

Abstract Two new long-chain carboxylic acids (1, 2) bearing strong fluorescent group pyrene as ligands for Self-Assembled Monolayers (SAMs) have been synthesized. The multistep targeted synthesis is accomplished by use of Pyren-1-yl methylamine hydrochloride and employing simplified synthetic protocols. Compound 2 contains a chiral center purposely introduced along the atom chain in order to make it suitable for chiro-optical studies of the resulting SAMs

Synthesis of fluorescent long-chain thiols/disulfides as building-blocks for self-assembled monolayers preparation

Abstract New symmetrical disulfides together with the corresponding thiols bearing fluorescent end-groups have been synthesized as building-blocks for self-assembled monolayers (SAMs). The synthesis has been accomplished starting from aromatic nitrogen heterocycles in three steps. The conversion of the tosylated intermediate into the final disulfide is accomplished by use of sodium hydrogen sulfide (NaSH). Both products (thiols and disulfides) were isolated and characterized

Erratum to: "Synthesis of fluorescent carboxylic acid ligands for construction of monolayers on nanostructures"

© Versita Sp. z o.o. Received 25 July 2012; Accepted 30 July 2012 The original version of the article was published in Cent. Eur. J. Chem. 10(5) (2012) pp. 1640-1646. Unfortunately, the original version of this article contains a mistake in the affiliation section. Dr Sushilkumar A. Jadhav's first affiliation is Department of Material Science and Chemical Engineering, Politecnico di Torino, 10129 Torino, Italy Cent. Eur. J. Chem. • 10(6) • 2012 • 1980 DOI: 10.2478/s11532-012-0112-

Self-assembled monolayers (SAMs) of carboxylic acids: an overview

AbstractThe field of self-assembled monolayers (SAMs) of organic compounds on different substrates is of importance because it provides a suitable and efficient method of surface modification. The formation of robust, stable monolayers from carboxylic acids on two and three dimensional surfaces of different substrates have been reported. Carboxylic acids are promising class of organic compounds for monolayer formations where traditional alkanethiols or alkoxysilanes show limitations

Effect of Multimodal Pore Channels on Cargo Release from Mesoporous Silica Nanoparticles

Mesoporous silica nanoparticles (MSNs) with multimodal pore channels were fully characterized by TEM, nitrogen adsorption-desorption, and DLS analyses. MSNs with average diameter of 200 nm with dual pore channel zones with pore diameters of 1.3–2.6 and 4 nm were tested for their use in drug delivery application. Important role of the multimodal pore systems present on MSNs on the quantitative release of model drug ibuprofen was investigated. The results obtained revealed that the release profile for ibuprofen clearly shows distinct zones which can be attributed to the respective porous channel zones present on the particles. The fluctuations in the concentration of ibuprofen during the prolonged release from MSNs were caused by the multimodal pore channel systems