Framework Structures and Properties

There are two important further consequences of the low temperature route to framework formation. First, the entropic penalty associated with 

5500 each more than double that of porous carbon, and gravimetric pore volumes of 1.69 and 1.9 cm respectively. 

A further distinguishing feature of MOFs over other classes of porous materials is the extreme diversity of their surface chemistry, which can range from aromatic to highly ionic depending on the chemical nature of the building units used. This notably includes the achievement of multiple pore environments within individual materials. An important consequence of this versatility is that the surface chemistry can be tuned for highly specific molecular recognition and catalytic processes (see Sections 1.2.2, 1.2.3 and 1.2.4). 

In addition to the high degree of control over framework structure that can be achieved prior to and during MOF synthesis, considerable control can be exercised following framework assembly by exploiting the porosity of MOFs. Developments here have seen the emergence of a range of 

The simplest and most common form of post-synthetic modification is the desorption of guest molecules. This process, which in some cases is achieved most optimally at low temperature in multiple low-energy steps e.g. through activation by volatile solvents ° or supercriticial com- 

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