TY  - JOUR
A1  - Göbel, Ronald
A1  - Stoltenberg, Marcus
A1  - Krehl, Stefan
A1  - Biolley, Christine
A1  - Rothe, Regina
A1  - Schmidt, Bernd
A1  - Hesemann, Peter
A1  - Taubert, Andreas
T1  - A Modular Approach towards Mesoporous Silica Monoliths with Organically Modified Pore Walls: Nucleophilic Addition, Olefin Metathesis, and Cycloaddition
JF  - European journal of inorganic chemistry : a journal of ChemPubSoc Europe
N2  - We have synthesized mesoporous silica (monoliths) with defined surface chemistry by means of a number of addition reactions: (i) coupling of an isocyanate to a surface-immobilized thiol, (ii) addition of an epoxide to a surface-immobilized thiol, (iii) cross-metathesis between two olefins, and (iv) Huisgen [2+3] cycloaddition of an alkyne-functionalized silica monolith with an azide. Functionalization of the mesopores was observed, but there are significant differences between individual approaches. Isocyanate and epoxide additions lead to high degrees of functionalization, whereas olefin metathesis and [2+3] cycloaddition are less effective. We further show that the efficiency of the modification is about twice as high in mesoporous silica particles than in macroscopic silica monoliths.
KW  - Mesoporous materials
KW  - Hybrid materials
KW  - Surface chemistry
KW  - Click chemistry
KW  - Nucleophilic addition
Y1  - 2016
U6  - https://doi.org/10.1002/ejic.201500638
SN  - 1434-1948
SN  - 1099-0682
VL  - 6
SP  - 2088
EP  - 2099
PB  - Wiley-VCH
CY  - Weinheim
ER  -