Influence of Hydrodynamic Environment on Chain Rigidity, Liquid Crystallinity, Absorptivity, and Photoluminescence of Hydrogen-Bonding-Assisted Helical Poly(phenylacetylene)
Influence of Hydrodynamic Environment on Chain Rigidity, Liquid Crystallinity, Absorptivity, and Photoluminescence of Hydrogen-Bonding-Assisted Helical Poly(phenylacetylene)
复制标题
水动力环境对氢键辅助螺旋聚苯乙炔链刚性、液晶性、吸收率和光致发光的影响
DOI：
10.1039/c6ra01940d
复制
发表时间：
2016
期刊：
影响因子：
3.9
通讯作者：
Giseop Kwak*
中科院分区：
文献类型：
--
作者：
Young-Jae Jin;Hyojin Kim;Mari Miyata;Guanwu Yin;Takashi Kaneko;Masahiro Teraguchi;Toshiki Aoki;Giseop Kwak*
由于分子内氢键的形成或破坏所引起的构象变化，螺旋聚苯乙炔衍生物的链刚性、液晶度、吸光度和光致发光因所用溶剂的不同而显著不同。聚合物链在甲苯和四氢呋喃等非溶剂中表现为刚性和液晶，表现出较低的吸收率和分子内准分子发射，而相同的聚合物链在具有较高氢键受体强度的哌啶中变得柔韧，在可见光区表现出强吸收，发射显着熄灭。
The chain rigidity, liquid crystallinity, absorptivity, and photoluminescence of a helical poly(phenylacetylene) derivative varied significantly depending on the solvent employed, owing to the conformational changes caused by the formation or destruction of intramolecular hydrogen bonds. The polymer chains were rigid and liquid crystalline when dissolved in such non-solvents as toluene and THF to show lower absorptivity and intramolecular excimer emission while the same polymer chains became flexible in piperidine having a high hydrogen-bonding acceptor strength to exhibit strong absorption in the visible region and the emission was significantly quenched.