Highly Selective Ratiometric Emission Color Change by Zinc-Assisted Self-Assembly Processes
作者:Takuya Ogawa、Junpei Yuasa、Tsuyoshi Kawai
DOI:10.1002/anie.201001676
日期:——
Color sense: 2‐(Anthracen‐9‐ylethynyl)‐1‐methylbenzimidazole (BzIm‐An) shows a ratiometriccolorchange in emission from blue to light yellow to green with increasing Zn2+ concentration. The dimeric 3:1 complex [(BzIm‐An)3Zn2+}2] formed at low Zn2+ concentration is converted into the 2:1 complex [(BzIm‐An)2Zn2+] at high concentrations of Zn2+.
Remarkable rate acceleration of [4 + 2] cyclodimerization of an ethynylanthracene derivative on the product crystal surfaces
作者:Junpei Yuasa、Takuya Ogawa、Tsuyoshi Kawai
DOI:10.1039/c002103b
日期:——
Slow evaporation of a chloroform-n-hexane solution of 2-(anthracene-9-ylethynyl)-1-methylbenzimidazole (BzIm-An) yields cyclodimer (BzIm-An)(2) as crystals; the cyclodimerization is then dramatically accelerated on the product crystal faces.