Coupling Reagent for UV/vis Absorbing Azobenzene-Based Quantitative Analysis of the Extent of Functional Group Immobilization on Silica
作者:Ra-Young Choi、Chang-Hee Lee、Chul-Ho Jun
DOI:10.1021/acs.orglett.8b01016
日期:2018.5.18
N-hydroxysuccinimidyl(NHS)-ester group and a UV/vis absorbing azobenzene linker undergoes acid-catalyzed immobilization on silica. Analysis of the UV/vis absorption band associated with the azobenzene group in the adduct enables facile quantitative determination of the extent of loading of the NHS groups. Reaction of NHS-groups on the silica surface with amine groups of GOx and rhodamine can be employed
Pyridinium Salt Forming Rh(III)-Catalyzed Annulation Reaction of Secondary Allylamines with Internal Alkynes and Its Application to Surface Modification of a Mesoporous Material
作者:Ye Ri Han、Su-Hyang Shim、Dong-Su Kim、Chul-Ho Jun
DOI:10.1021/acs.orglett.7b03654
日期:2018.1.5
A Rh(III)-catalyzed C H activation reaction has been developed for the preparation of pyridinium salts from secondary allylamines and internal alkynes. The pyridinium salts formed by this N-annulation reaction have interesting fluorescence properties. This protocol has been applied to the surface modification of mesoporous silica materials to generate functionalized silica that can be used for the detection of nitrobenzene.
Sc(OTf)3-Mediated Silylation of Hydroxy Functional Groups on a Solid Surface: A Catalytic Grafting Method Operating at Room Temperature
作者:Ye-Rim Yeon、Young Jun Park、Ji-Sung Lee、Jung-Woo Park、Sin-Gun Kang、Chul-Ho Jun