Question
Molecular tectonics relies on framework materials held together by these noncovalent interactions since they can be programmed to give tighter control over pore size. For 10 points each:
[10e] Name these strong dipole-dipole interactions that often involve nitrogen, oxygen, or fluorine.
ANSWER: hydrogen bonds [or hydrogen bonding; or H bonds; accept hydrogen-bonded organic frameworks]
[10m] Despite the hype for gas storage in hydrogen-bonded organic frameworks, they have yet to match the best MOFs (“moffs”) or COFs (“coffs”) in this key attribute. The B·E·T method calculates this physical quantity for an adsorbent.
ANSWER: specific surface area [or SSA; prompt on porosity; prompt on area]
[10h] Predictable design of pore size is obstructed by this effect, the undesired spatial overlap between adjacent framework lattices, since it is more common in noncovalent networks. Tissue engineers deliberately use this effect to strengthen hydrogels.
ANSWER: interpenetration [accept interpenetrating frameworks; accep interpenetrating polymer networks; prompt on penetration or penetrating]
<Chemistry>
Summary
| 2023 ACF Nationals | 04/22/2023 | Y | 24 | 12.08 | 92% | 29% | 0% |
Data
| Chicago C | Minnesota A | 10 | 0 | 0 | 10 |
| North Carolina A | Cornell B | 10 | 0 | 0 | 10 |
| Yale A | Chicago A | 10 | 0 | 0 | 10 |
| Florida B | Houston A | 10 | 0 | 0 | 10 |
| Imperial A | Michigan A | 10 | 10 | 0 | 20 |
| Minnesota B | Johns Hopkins A | 10 | 0 | 0 | 10 |
| UC Berkeley A | MIT A | 10 | 0 | 0 | 10 |
| McGill A | Rutgers A | 10 | 0 | 0 | 10 |
| Ohio State A | WUSTL A | 10 | 10 | 0 | 20 |
| Penn A | Penn State A | 10 | 0 | 0 | 10 |
| Claremont A | South Carolina A | 10 | 0 | 0 | 10 |
| Columbia A | Toronto A | 10 | 0 | 0 | 10 |
| Georgia Tech B | Virginia A | 0 | 0 | 0 | 0 |
| Harvard A | Texas A | 10 | 10 | 0 | 20 |
| Illinois A | Iowa State A | 10 | 0 | 0 | 10 |
| NYU A | Columbia B | 10 | 0 | 0 | 10 |
| Northwestern A | Indiana A | 10 | 0 | 0 | 10 |
| Vanderbilt A | Rutgers B | 10 | 10 | 0 | 20 |
| Stanford A | Florida A | 10 | 10 | 0 | 20 |
| UC Berkeley B | Purdue A | 10 | 0 | 0 | 10 |
| Georgia Tech A | Cornell A | 10 | 10 | 0 | 20 |
| Yale B | WUSTL B | 10 | 0 | 0 | 10 |
| Chicago B | Brown A | 10 | 10 | 0 | 20 |
| Maryland A | Duke A | 0 | 0 | 0 | 0 |