Rapid Screening of a Receptor with Molecular Memory
摘要:
[graphics]Atropisomeric receptor 1 can change conformation and maintain the new conformation when heated and cooled in the presence of a guest molecule. This molecular memory can be used as a rapid method of screening potential guests. Heating atropisomeric diacid 1 with various hydrogen-bonding guests leads to a shift in the syn/anti ratio that could be easily monitored as it is stable at room temperature even in the absence of the guest molecules.
Solvent-induced reversible solid-state colour change of an intramolecular charge-transfer complex
作者:Ping Li、Josef M. Maier、Jungwun Hwang、Mark D. Smith、Jeanette A. Krause、Brian T. Mullis、Sharon M. S. Strickland、Ken D. Shimizu
DOI:10.1039/c5cc06140g
日期:——
A dynamic intramolecularcharge-transfer (CT) complex was designed that displayed reversible colour changes in the solid-state when treated with different organic solvents. The origins of the dichromatism were shown to...
A High-Barrier Molecular Balance for Studying Face-to-Face Arene-Arene Interactions in the Solid State and in Solution
作者:Yong S. Chong、William R. Carroll、William G. Burns、Mark D. Smith、Ken D. Shimizu
DOI:10.1002/chem.200900479
日期:2009.9.14
by X‐ray crystallography. These studies were facilitated by the kinetic stability of the syn and antiisomers at room temperature due to the high isomerization barrier (ΔG=27.0 kcal mol−1). Thus, the antiisomer could be selectively isolated and crystallized in its folded conformation. The X‐ray structures confirmed that the antiisomers formed two strong intramolecular arene–arene interactions with
Guest control of a hydrogen bond-catalysed molecular rotor
作者:Gregory T. Rushton、Erik C. Vik、William G. Burns、Roger D. Rasberry、Ken D. Shimizu
DOI:10.1039/c7cc07672j
日期:——
Demonstrated is the control of a molecular rotor using hydrogenbonding guests. With a properly positioned phenol substituent, the N-arylimide rotors can form an intramolecularhydrogenbond that catalyses the rotational isomerization process. The addition of guests disrupts the hydrogenbond and raises the rotational barrier slowing rotation by two orders of magnitude.