Tunable Crystallinity and Charge Transfer in Two‐Dimensional G‐Quadruplex Organic Frameworks
作者:Yi‐Lin Wu、N. Scott Bobbitt、Jenna L. Logsdon、Natalia E. Powers‐Riggs、Jordan N. Nelson、Xiaolong Liu、Timothy C. Wang、Randall Q. Snurr、Joseph T. Hupp、Omar K. Farha、Mark C. Hersam、Michael R. Wasielewski
DOI:10.1002/anie.201800230
日期:2018.4.3
DNA G‐quadruplex structures were recently discovered to provide reliable scaffolding for two‐dimensionalorganicframeworks due to the strong hydrogen‐bonding ability of guanine. Herein, 2,7‐diaryl pyrene building blocks with high HOMO energies and large optical gaps are incorporated into G‐quadruplexorganicframeworks. The adjustable substitution on the aryl groups provides an opportunity to elucidate
Controlling Isomerization Selectivity in Chiral, Photochromic N,C-Chelate Organoboron Systems with Extended π-Conjugation
作者:Soren K. Mellerup、Cally Li、Xiang Wang、Suning Wang
DOI:10.1021/acs.joc.8b01856
日期:2018.10.5
Alkyne-functionalized chelate boron compounds with extended π-conjugation on one of the aryl groups attached to boron display thermally reversible and regioselective isomerization on the more delocalized substituent, forming base-stabilized boriranes with an intense color. Linking two of such boron chromophores through a 1,4-phenylene spacer via ethynyl moieties leads to photochemically inert molecules