Self-assembling, patterning and SPR imaging of a 1,3 alternate bis(dipyridyl)calix[4]arene derivative–Cu<sup>2+</sup>complex immobilized on to Au(111) surfaces
The electrochemically switchable Cu(2+) complex of a 1,3 alternate bis(dipyridyl)calix[4]arene derivative forms self-assembledmonolayers on Au(111) surfaces. The receptor is patterned on the surface by using microcontact printing procedures and the resulting surface is imaged via SPR.
multidentate structure of calix[n]arene derivatives 2 and 3 introduces a control element in the preparation of the goldnanoparticles that allows, in the particular experimental conditions here reported, to obtain very small (≈1 nm) AuNPs. These are the first experimental findings that identify a role of ligand “denticity” in the determination of the nuclearity of nanoparticles.
由单齿,二齿稳定一系列金粒子(AuNPS)的,和三齿硫醇杯[ Ñ ]芳烃配体1 - 3通过使用布鲁斯特-扶邻两相直接合成制备和表征用NMR光谱法,元素分析,透射电子显微镜(TEM)和X射线光电子能谱(XPS)。实验数据表明,杯[ n ]芳烃衍生物2和3的特定多齿结构在金纳米颗粒的制备过程中引入了一种控制元素,该元素可在此处报道的特定实验条件下获得非常小的(≈1nm)AuNPS。这些是第一个鉴定配体“同一性”在确定纳米颗粒核性中的作用的实验发现。
Recognition of quaternary ammonium cations by calix[4]arene derivatives supported on gold nanoparticles
Calix[4]arene derivatives supported on monolayer protected gold clusters show a remarkable enhanced binding efficiency towards quaternary ammonium salts in homogeneous solution of apolar solvents with respect to the corresponding unsupported hosts.
SELF-ASSEMBLED MONOLAYERS ON THE SURFACE OF GOLD COATED MICROCANTILEVERS FOR APPLICATION TO CHEMICAL SENSING AND METHOD OF PREPARATION
申请人:UT-Battelle, LLC
公开号:EP1794580A2
公开(公告)日:2007-06-13
Method For The Preparation Of Very Stable, Self-Assembled Monolayers On The Surface Of Gold Coated Microcantilevers For Application To Chemical Sensing
申请人:Pinnaduwage Lal A.
公开号:US20080206103A1
公开(公告)日:2008-08-28
Methods for the preparation of a stable, self-assembled monolayer on the silicon surface or metallic coating of a microcantilever are disclosed. The methods produce a microcantilever suitable as a chemical sensor. In a microcantilever produced using one version of the method, a metallic coating is disposed on a side of the microcantilever, a bridging atom is bonded to the metallic coating, a first spacer group is bonded to the bridging atom, a second spacer group is bonded to the bridging atom, and a chemical recognition agent is bonded to the first spacer group. In another version of the method, a silicon surface of a microcantilever is hydrogen terminated, and a calixarene chemical recognition agent is carbon linked to the silicon surface using photochemical hydrosilylation. Among other things, the calixarene may be bonded to a crown ether for ion detection or bonded to a area for the recognition of explosives by hydrogen bonding to nitro groups.