In visits on back-to-back days, the two will test their appeal among workers in a key swing state. The post Biden, Trump square off for Michigan’s working-class voters appeared first on Boston.com…Read More
Schematic illustration of multilevel post-synthetic modification. a Effects of reduction reaction, Menshutkin reaction and multilevel post-synthetic modification on the bond change and charge state. b The synthesis of N+-COF, NH-COF and N+-NH-COF from the base COF (CoTAPP-PATA-COF). Credit: Nature Communications (2023). DOI: 10.1038/s41467-023-39544-9 Covalent organic frameworks (COFs), possessing ordered pores and high-precision functionalization, are regarded