描述了一种容易的合成方法,用于π-膨胀的四硫富瓦烯衍生物。3,6-二氯哒嗪稠合的四硫富富烯的Suzuki反应与苯基硼酸 或者 联苯硼酸给出了一系列新颖的T形有机π共轭物。通过循环伏安法和紫外可见光谱法的结合,对缀合物的电子性质进行了实验研究。它们的HOMO和LUMO能级估计约为-5 eV和-3.2 eV,分别是p沟道和n沟道场效应晶体管中的空气工作稳定性范围。经验证,只有一个带有较长烷基链的共轭物(n = 1,R = n -C 18 H 37)能在介晶相中自组装成层状结构,其薄膜器件的最佳载流子迁移率是4.5 ×10 -5 cm 2 V -1 s -1。
我们报告了一套新颖的易于定制的C 3对称分子,具有π延伸的核心,并装饰有不同的硫代烷基,表现出溶剂化的荧光色和两性的氧化还原行为。近似平面的核表现出分子间面对面的π堆积,S⋯S和分子内S⋯O相互作用。电流感测原子力显微镜研究显示,在未添加硫代丙基的胶凝剂的J型骨料纳米纤维中,电导率约为0.15 mS cm -1。
Bis-fused π-electron donors having alkylthio chains, CnTET-TTP (2-[4,5-bis(alkylthio)-1,3-dithiol-2-ylidene]-5-(4,5-ethylenedithio-1,3-dithiol-2-ylidene)-1,3,4,6-tetrathiapentalene; n = 2–4) have been synthesized. C2TET-TTP (1a) forms radical-cation salts with BF4- and ClO4-, which are metallic (σrt = 900-2500 S cm-1) down to helium temperatures. The I3 salts of C3TET-TTP (1b) and C4TET-TTP (1c) are
NTCDA–TTF first axial fusion: emergent panchromatic, NIR optical, multi-state redox and high optical contrast photooxidation
作者:Deepak Asthana、M. R. Ajayakumar、Rajendra Prasad Pant、Pritam Mukhopadhyay
DOI:10.1039/c2cc31274c
日期:——
The first synthetic entry into axially fused NTCDA/PMDAâTTF multipolar molecules demonstrates a high optical contrast photooxidation, panchromism, low HOMOâLUMO gap, generation of a stable radical cation, NIR absorption/emission beyond 2150/800 nm and theoretically calculated NLO activity.
Appending Diverse π-Extended Acceptors with Tetrathiafulvalene/Dithiafulvalene Donors: Multistate Redox Properties, Radical Ion Generation, and Mid-IR-Absorbing Mixed-Valence States
orbitals and influence the optoelectronic properties. The D moieties allow the formation of radical cations (D.+) and the π‐extended A moieties aid the formation of radical anions (A.−) by oxidation/reduction under ambient conditions. The molecules revealed UV/Vis/near‐IR absorption, fluorescence extending into the near‐IR region, and amphoteric electrochemical properties. Chromophores 10 and 12 show solvatochromism
Synthesis, Photophysical and Electrochemical Properties of a D-σ-A Ensemble Derived from Porphyrazine and Tetrathiafulvalene
作者:Bingzhu Yin、Ruibin Hou、Han Qiu、Tie Chen
DOI:10.3987/com-09-11645
日期:——
The cis isomer was converted to eight tetrathiafulvalene unit substituted magnesium porphyrazine upon a metal-templated cyclotetramerization with magnesium propoxide in propanol. The dicyanoethylenes and target compound were characterized by EA, NMR, and MALDI-TOF mass and photophysical and Electrochemicalproperties were discussed.
Dye-Sensitized Solar Cells Based on (Donor-π-Acceptor)<sub>2</sub>Dyes With Dithiafulvalene as the Donor
作者:Ting-Hui Lee、Chih-Yu Hsu、You-Ya Liao、Hsien-Hsin Chou、Heather Hughes、Jiann T. Lin
DOI:10.1002/asia.201402232
日期:2014.7
Dipolar metal‐free sensitizers (D‐π‐A; D=donor, π=conjugatedbridge, A=acceptor) consisting of a dithiafulvalene (DTF) unit as the electron donor, a benzene, thiophene, or fluorene moiety as the conjugated spacer, and 2‐cyanoacrylic acid as the electron acceptor have been synthesized. Dimeric congeners of these dyes, (D‐π‐A)2, were also synthesized through iodine‐induced dimerization of an appropriate
无偶极金属敏化剂(D-π-A; D =供体,π=共轭桥,A =受体),由作为电子供体的二硫富瓦烯(DTF)单元,作为共轭间隔基的苯,噻吩或芴部分组成,并且已经合成了2-氰基丙烯酸作为电子受体。这些染料的二聚体同类物(D-π-A)2也通过碘诱导的适当DTF片段的二聚而合成。使用新型染料作为敏化剂的染料敏化太阳能电池(DSSC)的电池效率范围为2.11%至5.24%。(D-π-A)2染料除了可以更好地收集光以外,还可以比D-π-A染料更有效地抑制暗电流。