Three series of D-π-A 2,6-dimethyl-4-pyrone-cored derivatives were designed and synthesized. Evaluation by spectroscopic methods indicated that all the compounds exhibited aggregation-induced emission enhancement (AIEE) effect and solvatochromism. The experimental results revealed that the restriction of intramolecular rotation is the key element for showcasing the AIEE phenomenon. Moreover, all of
Alkoxy-position effects on piezofluorochromism and aggregation-induced emission of 9,10-bis(alkoxystyryl)anthracenes
作者:Wei Liu、Yalong Wang、Mingxiao Sun、Deteng Zhang、Meng Zheng、Wenjun Yang
DOI:10.1039/c3cc42636j
日期:——
Changing the linking positions of alkoxy chains can significantly alter the aggregation-induced emission and piezofluorochromic activities of 9,10-bis(alkoxystyryl)anthracenes.
Polyurea compositions and compounds for the preparation thereof
申请人:Sawyer, Kenneth I.
公开号:EP2289962A2
公开(公告)日:2011-03-02
The invention is directed to novel compounds that are used in the formation of polyurea compositions, including one-part and two-part polyurea compositions. The invention is also directed to polyureas formed from such compounds, cross-linked polyureas, and UV-stabilized polyureas.
Borer-resistant wood, wood products, and wooden structures and methods
申请人:Sawyer I. Kenneth
公开号:US20050196419A1
公开(公告)日:2005-09-08
The invention provides methods for suppressing the degradation of wood, wood products, and wooden structures due to infestation by wood-boring organisms, by use of a polyurea composition. The invention also provides for wood, wood products, and wood structures that are resistant to degradation due to borer infestation by use of a polyurea composition.