新型聚苯撑共轭共聚物的合成及特性描述了-芴)主链和通过柔性间隔基团连接到主链的2,6-双(1'-甲基苯并咪唑基)吡啶(bip)配体。该共聚物是通过Pd催化的9,9-二己基芴的2,7-双pinacolatoboron酯与在2和5位带有两个ω-bip-取代的烷氧基的1,4-二溴苯衍生物的Suzuki偶联而制备的。产率为88%。该聚合物易溶于常见的有机溶剂,并显示出强烈的蓝色荧光,其最大波长为416 nm。甲苯的荧光量子产率为85%。用甲苯/甲醇(99:1 v / v)中的氯化锌和甲苯/甲醇(24:1 v / v)中的高氯酸亚铁对聚合物进行UV / vis滴定,表明形成了2:1的配体:金属离子(bis)复合体。复合物的形成伴随着离子特异性颜色的变化(电致变色)和配体荧光的猝灭。主链荧光被部分保留。配位体取代的聚合物(“多位配位体”)和二价金属离子(Zn(II),Cu(II))之间的配位相互作用可
Conjugated Polymer with Benzimidazolylpyridine Ligands in the Side Chain: Metal Ion Coordination and Coordinative Self-Assembly into Fluorescent Ultrathin Films
作者:Irina Welterlich、Bernd Tieke
DOI:10.1021/ma200126e
日期:2011.6.14
toluene/methanol (24:1 v/v) indicates formation of 2:1 ligand:metalion (bis)complexes. Complex formation is accompanied by ion specific color changes (ionochromism) and quenching of the ligand fluorescence. The backbone fluorescence is partially retained. The coordinative interactions between the ligand-substituted polymer (“polytopic ligand”) and the divalent metalions (Zn(II), Cu(II)) can be used for layer-by-layer
新型聚苯撑共轭共聚物的合成及特性描述了-芴)主链和通过柔性间隔基团连接到主链的2,6-双(1'-甲基苯并咪唑基)吡啶(bip)配体。该共聚物是通过Pd催化的9,9-二己基芴的2,7-双pinacolatoboron酯与在2和5位带有两个ω-bip-取代的烷氧基的1,4-二溴苯衍生物的Suzuki偶联而制备的。产率为88%。该聚合物易溶于常见的有机溶剂,并显示出强烈的蓝色荧光,其最大波长为416 nm。甲苯的荧光量子产率为85%。用甲苯/甲醇(99:1 v / v)中的氯化锌和甲苯/甲醇(24:1 v / v)中的高氯酸亚铁对聚合物进行UV / vis滴定,表明形成了2:1的配体:金属离子(bis)复合体。复合物的形成伴随着离子特异性颜色的变化(电致变色)和配体荧光的猝灭。主链荧光被部分保留。配位体取代的聚合物(“多位配位体”)和二价金属离子(Zn(II),Cu(II))之间的配位相互作用可
Stimuli‐Responsive Reversible Switching of Intersystem Crossing in Pure Organic Material for Smart Photodynamic Therapy
Photosensitizers (PSs) with stimuli‐responsive reversible switching of intersystemcrossing (ISC) are highly promising for smart photodynamic therapy (PDT), but achieving this goal remains a tremendous challenge. This study introduces a strategy to obtain such reversible switching of ISC in a new class of PSs, which exhibit stimuli‐initiated twisting of conjugated backbone. We present a multidisciplinary
Oligonucleotide‐mediated aggregation of a cationic conjugated polymer for fluorescent detection of mercury ions in an aqueous medium
作者:Na Young Kwon、Geunseok Jang、Jongho Kim、Daigeun Kim、Taek Seung Lee
DOI:10.1002/pola.26624
日期:2013.6
as a novel fluorescent sensing platform is demonstrated for mercuryiondetection. The detection of mercuryions is accomplished in two steps: (1) the cationic, blue‐emitting P2 absorbs an anionic oligonucleotide, polythymidine (PT) via electrostatic interaction to form a complex with green emission due to aggregation between the two species; (2) the addition of mercuryions to the complex produces a
Copolyphenylenes with pendant benzimidazolyl and diethanolaminohexyloxy groups: Synthesis and electron-transporting application in PLEDs
作者:Chih-Yang Tseng、Wen-Fen Su、Yun Chen
DOI:10.1002/pola.28642
日期:2017.8.1
para‐linkage for P1NH and both para‐ and meta‐linkage for P2NH, with the same pendant electron‐withdrawing benzimidazolyl and polar diethanolaminohexyloxy groups. Both copolymers possess excellent thermal stability (Td > 300 °C, Tg > 100 °C) due to their rigid backbones. In addition, the pendant groups effectively lower LUMO (∼ −2.70 eV) and HOMO (∼ −5.70 eV) levels, resulting in improved electron‐transporting
合成了两种具有平衡电荷的新型电子传输共聚亚苯基P1NH和P2NH,它们对聚合物发光二极管(PLED)的发射效率至关重要,并已用作电子传输层(ETL)。主链结构都是对的-键P1NH和两对-和间-键为P2NH,用相同的挂件吸电子苯并咪唑基和极性基团diethanolaminohexyloxy。两种共聚物均具有出色的热稳定性(T d > 300°C,T g > 100°C)的刚性骨架。此外,侧基有效地降低了LUMO(〜-2.70 eV)和HOMO(〜-5.70 eV)的水平,从而提高了电子传输和空穴阻挡能力。通过旋涂工艺成功制造了具有ITO / PEDOT:PSS / SY / ETL / LiF / Al构型的发黄光多层PLED。所述的最大亮度和最大电流效率P1NH为基础的装置是12881烛光/米2和10.94坎德拉/ A,分别优于性能P2NH为基础的装置(4938烛光/米2,3.70坎德拉/
Enhancing Organic Phosphorescence by Manipulating Heavy-Atom Interaction
challenge in organic optoelectronics. Herein, we report a concise approach to obtaining pureorganic phosphorescence with high quantum efficiency of up to 21.9% and millisecond-scale lifetime by manipulating heavy-atom interaction based on a class of dibromobenzene derivatives in the solid state under ambient conditions. By comparing two pairs of the organic compounds designed, the one with two more bromine
在环境条件下在不含金属的材料中实现高效磷光仍然是有机光电领域的主要挑战。在本文中,我们报告了一种简洁的方法,该方法可通过在环境条件下基于一类二溴苯衍生物在固态下操纵重原子相互作用来获得具有高达21.9%的高量子效率和毫秒级寿命的纯有机磷光。通过比较设计的两对有机化合物,一个在烷基末端具有两个溴原子(PhBr 2 C 6 Br 2 / PhBr 2 C 8 Br 2)的发光效率要高于另一对(PhBr 2 C 6)/ PhBr 2 C 8)。从单晶分析,提出磷光的增强是由于有机晶体中分子间重原子间相互作用的增加所致。此外,通过使用这种有机磷光晶体的模型探针对温度传感器进行了说明。这项工作不仅为提高不含金属的材料的磷光提供了一种简洁的选择,而且扩展了单一组分中具有高发光效率的纯有机磷光材料的范围。