Metal-organic framework glasses with permanent accessible porosity.

To date, only several microporous, and even fewer nanoporous, glasses have been produced, always via post synthesis acid treatment of phase separated dense materials, e.g. Vycor glass. In contrast, high internal surface areas are readily achieved in crystalline materials, such as metal-organic frameworks (MOFs). It has recently been discovered that a new family of melt quenched glasses can be produced from MOFs, though they have thus far lacked the accessible and intrinsic porosity of their crystalline precursors. Here, we report the first glasses that are permanently and reversibly porous toward incoming gases, without post-synthetic treatment. We characterize the structure of these glasses using a range of experimental techniques, and demonstrate pores in the range of 4 - 8 Å. The discovery of MOF glasses with permanent accessible porosity reveals a new category of porous glass materials that are elevated beyond conventional inorganic and organic porous glasses by their diversity and tunability

Modulation of porosity in a solid material enabled by bulk photoisomerization of an overcrowded alkene

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This Study is Intentionally Left Blank - A systematic literature review of blank pages in academic publishing

<p>Common in all areas of publishing, the phrase “This Page is Intentionally Left Blank” has been found in peer-reviewed academic articles costing $30 to access. To the best of our knowledge, this paper represents the first known review of Intentionally Blank Pages (IBPs). We provide an analysis of the IBPs available in the literature and develop a means of quantifying the amount of blankness on such pages, using a new metric, the “Blankness Defect Rate” (BDR). We posit some possible explanations for this phenomenon, including “editor’s block”, a creative impairment similar to the well-known “writer’s block”. Finally, we offer some alternatives to the traditional IBP paradigm and identify avenues for future research.</p> <p>This is V. 3</p