Conjugated Polymers with Pyrrole as the Conjugated Bridge: Synthesis, Characterization, and Two-Photon Absorption Properties
作者:Qianqian Li、Cheng Zhong、Jing Huang、Zhenli Huang、Zhiguo Pei、Jun Liu、Jingui Qin、Zhen Li
DOI:10.1021/jp2015484
日期:2011.7.14
The synthesis, one- and two-photonabsorption (2PA) and emission properties of two novel pyrrole-based conjugatedpolymers (P1 and P2) are reported. They emitted strong yellow-green and orange fluorescence with fluorescent quantum yields (Φ) of 46 and 33%, respectively. Their maximal 2PA cross sections (δ) measured by the two-photon-induced fluorescence method using femtosecond laser pulses in THF
Chromophoric materials derived from a natural azulene: syntheses, halochromism and one-photon and two-photon microlithography
作者:E. H. Ghazvini Zadeh、S. Tang、A. W. Woodward、T. Liu、M. V. Bondar、K. D. Belfield
DOI:10.1039/c5tc01459j
日期:——
Sky blue mushroom is a natural source of azulenes, from which a series of stimuli-responsive chromophores are prepared for application in microlithography.
天蓝色蘑菇是天然的靛烷来源,从中制备出一系列刺激响应的色团,用于微影技术应用。
Two-photon absorption in V-type chromophores with electron-rich heterocyclevinylene bridges
作者:QianQian Li、AoShu Zhong、HaiJie Liu、Ming Peng、Jun Liu、ZhiGuo Pei、ZhenLi Huang、JinGui Qin、Zhen Li
DOI:10.1007/s11426-011-4248-4
日期:2011.4
A series of V-type chromophores with electron-rich heterocyclevinylene bridges have been synthesized via Wittig-Horner-Emmons and Vilsmeier reactions. All the target chromophores showed strong one-photon and two-photon excited emission, and their electron properties could be tuned by using different heterocycles such as furan, thiophene and pyrrole moieties in I–III. The maximum two-photon absorption (TPA) cross sections occurred at 760 nm and were measured to be in the range of 400–800 GM.
Enhanced photovoltaic performance of ternary solar cells by doping a new squaraine derivative
作者:Linna Zhu、Rui Wang、Jianhui Qiao、Fei Wu
DOI:10.1016/j.dyepig.2016.04.038
日期:2016.9
Ternary blend solarcells have been proved to be an efficient way to harvest more photons over the near-IR region. In this work, the effect of adding a NIR absorbing squaraine derivative (TPE-SQ) into a conventional P3HT:PC71BM based bulkheterojunction photovoltaic cell is investigated. The new NIR dye exhibits a quite broad absorption band with full-width at half maximum of 169 nm in the film state
Marked Alkyl- vs Alkenyl-Substitutent Effects on Squaraine Dye Solid-State Structure, Carrier Mobility, and Bulk-Heterojunction Solar Cell Efficiency
作者:Diego Bagnis、Luca Beverina、Hui Huang、Fabio Silvestri、Yan Yao、Henry Yan、Giorgio A. Pagani、Tobin J. Marks、Antonio Facchetti
DOI:10.1021/ja100520q
日期:2010.3.31
We report two new squaraine dyes substituted at the pyrrolic rings with n-hexyl (squaraine 1) or n-hexenyl (squaraine 2) chains. Although internal molecular structure variations are minimal, the presence of the terminal double bond results in a much more compact solid-state structure, dramatically affecting charge transport in the thin films; the hole mobility of 2 is similar to 5x that of 1, and the BHJ OPV power conversion efficiency (PCE) of 2 is similar to 2x that of 1. PCEs surpassing 2% for ambient solution-processed devices are demonstrated, the largest so far achieved for squaraine-based organic solar cells.