Three conjugatedpolymers (PTIBT, PTITBT and PTIDTBT) containing N-alkyl-TI as the donor units, 2,1,3-benzodiathiazole (BT) as the acceptor units and thiophene as the spacers were synthesized. The thiophene spacers have a dramatic impact on the physical and electrochemical properties of these copolymers. These polymer donors were used for the fabrication of bulk heterojunction polymersolarcells (PSCs)
开发了针对噻吩并[3,2- b ]吲哚(TI)衍生物的通用合成策略。合成了三种共轭聚合物(PTIBT,PTITBT和PTIDTBT),它们分别以N-烷基-TI为供体单元,2,1,3-苯并二噻唑(BT)为受体单元和噻吩为间隔基。噻吩间隔基对这些共聚物的物理和电化学性能产生巨大影响。这些聚合物供体用于制造体异质结聚合物太阳能电池(PSC)。最初,基于ITO / PEDOT:PSS /聚合物:PC 71 BM / Ca / Al的器件结构的功率转换效率(PCE)表现出很大的差异(PTIBT为1.61%在最佳器件制造条件下,PTITBT为5.83%,PTTIDTB为1.79%。基于PTITBT :PC 71 BM(1:3,w / w)的设备显示最佳PCE为5.83%(V oc = 0.69 V,J sc = 13.92 mA cm -2,FF = 61.8%),代表1在PCDTBT类似物中表现最佳。此外,Ĵ
D–A conjugated polymers based on thieno[3,2-b]indole (TI) and 2,1,3-benzodiathiazole (BT) derivatives: synthesis, characterization and side-chain influence on photovoltaic properties
A facile synthetic strategy toward thieno[3,2-b]indole (TI) derivatives was developed by the Cadogan annulation method. Three donor‒acceptor (D‒A) conjugated polymers P1, P2 and P3 containing N-alkyl-TI derivatives and 4,7-dithien-5-yl-2,1,3-benzodiathiazole (DTBT)...
Synthesis of photodynamic and photothermal agents with absorption in the near-infrared (NIR) region and featuring excellent photostability, highsingletoxygengeneration efficiency, good photothermal conversion efficiency, and good biocompatibility is necessary for the application of photodynamictherapy (PDT) and phtothermal therapy (PTT). Three NIR absorption compounds based on thieno[2,3-b]indole
具有良好的光稳定性,高单线态氧产生效率,良好的光热转化效率和良好的生物相容性的光动力学和光热剂的合成在近红外(NIR)区域中的应用是光动力疗法(PDT)和光热疗法的应用所必需的(PTT)。设计并合成了基于噻吩并[2,3- b ]吲哚(TI)和二酮吡咯并吡咯(DPP)的三种近红外吸收化合物。仔细确定了它们的紫外可见近红外吸收,光致发光,电子分布,能级和热诱导的相变。作为结构类似物,仅DPP-TI具有优良的单线态氧量子产率(1 Ò 2,Φ Δ = 48.5%),其作为水中的纳米颗粒显示出有效的光热转化效率(η= 15.8%)。初步探讨了DPP-TI纳米粒子作为荧光成像治疗剂的协同PDT和PTT在体外仅使用一种波长的光的潜力。
Significant light absorption enhancement by a single heterocyclic unit change in the π-bridge moiety from thieno[3,2-b]benzothiophene to thieno[3,2-b]indole for high performance dye-sensitized and tandem solar cells
作者:Yu Kyung Eom、Sung Ho Kang、In Taek Choi、Youngjun Yoo、Jeongho Kim、Hwan Kyu Kim
DOI:10.1039/c6ta09836c
日期:——
The molecular design of organic sensitizers is one of the fundamental factors for high-efficiency dye-sensitizedsolarcells (DSSCs). In this study, we first utilize the alkylated thieno[3,2-b]indole (TI) moiety as the π-bridge unit to enhance the π-bridge capability of the thieno[3,2-b]benzothiophene (TBT) used in organic sensitizers. To improve the spectral response of the SGT-130 reference dye,
有机敏化剂的分子设计是高效染料敏化太阳能电池(DSSC)的基本因素之一。在这项研究中,我们首先利用烷基化的噻吩并[3,2- b ]吲哚(TI)部分作为π桥单元来增强所用的噻吩并[3,2- b ]苯并噻吩(TBT)的π桥能力。在有机敏化剂中。为了改善SGT-130参考染料的光谱响应,我们通过简单地更改π桥单元,策略性地设计和合成了两种新型的基于TI的有机敏化剂SGT-136和SGT-137。通过用烷基化的TI取代TBT部分,SGT-136和SGT-137可以具有红移吸收带和升档最高占据分子轨道(HOMO)能级。结果,基于SGT-137的DSSC显示出比基于SGT-130的DSE(9.83%)更高的PCE(12.45%),这归因于电流密度的提高和被己基取代的TI单元的电荷复合的延迟。这些结果表明,与其他复杂的π桥相比,TI部分是D–π–A有机敏化剂中出色的π电子介体的良好候选者,具有合成容易的