408359-98-8Relevant academic research and scientific papers
Luminescence Color Tuning by Regulating Electrostatic Interaction in Light-Emitting Devices and Two-Photon Excited Information Decryption
Ma, Yun,Liu, Shujuan,Yang, Huiran,Zeng, Yi,She, Pengfei,Zhu, Nianyong,Ho, Cheuk-Lam,Zhao, Qiang,Huang, Wei,Wong, Wai-Yeung
, p. 2409 - 2416 (2017)
It is well-known that the variation of noncovalent interactions of luminophores, such as π- π interaction, metal-to-metal interaction, and hydrogen-bonding interaction, can regulate their emission colors. Electrostatic interaction is also an important noncovalent interaction. However, very few examples of luminescence color tuning induced by electrostatic interaction were reported. Herein, a series of Zn(II)-bis(terpyridine) complexes (Zn-AcO, Zn-BF4, Zn-ClO4, and Zn-PF6) containing different anionic counterions were reported, which exhibit counterion-dependent emission colors from green-yellow to orange-red (549 to 622 nm) in CH2Cl2 solution. More importantly, it was found that the excited states of these Zn(II) complexes can be regulated by changing the electrostatic interaction between Zn2+ and counterions. On the basis of this controllable excited state, white light emission has been achieved by a single molecule, and a white light-emitting device has been fabricated. Moreover, a novel type of data decryption system with Zn-PF6 as the optical recording medium has been developed by the two-photon excitation technique. Our results suggest that rationally controlled excited states of these Zn(II) complexes by regulating electrostatic interaction have promising applications in various optoelectronic fields, such as light-emitting devices, information recording, security protection, and so on.
Theoretical and experimental study on the intramolecular charge transfer excited state of the new highly fluorescent terpyridine compound
Song, Peng,Sun, Shi-Guo,Liu, Jian-Yong,Xu, Yong-Qian,Han, Ke-Li,Peng, Xiao-Jun
, (2009)
Experimental and theoretical methods have been used to investigate the relaxation dynamics and photophysical properties of the donor-acceptor compound 4′-(4-N,N-diphenylaminophenyl)-2,2′:6′,2″-terpyridine (DPAPT), a compound which is found to exhibit effi
Five-stage near-infrared electrochromism in electropolymerized films composed of alternating cyclometalated bisruthenium and bis-triarylamine segments
Yao, Chang-Jiang,Zhong, Yu-Wu,Yao, Jiannian
, p. 10000 - 10008 (2013)
Oxidative electropolymerization of cyclometalated bisruthenium complexes [(Nptpy)2Ru2(tppyr)](PF6)2 and [(Nptpy)2Ru2(tpb)](PF6)2 produced adherent metallopolymeric films on electrode surfaces, where Nptpy is 4'-(p-N,N-diphenylamino)phenyl-2,2':6',2'-terpyridine, tppyr is the 2,7-bisdeprotonated form of 1,3,6,8-tetra(pyrid-2-yl)pyrene, and tpb is the 3,6-bisdeprotonated form of 1,2,4,5-tetra(pyrid-2-yl)benzene. The resulting polymers are composed of two types of alternating constituent units: tppyr- or tpb-bridged cyclometalated bisruthenium units and biphenyl-bridged bis-triarylamine segments. These films exhibited four well-defined anodic redox couples as a result of the stepwise oxidations of these two units. By manipulating the intervalence charge-transfer transitions of mixed-valent bisruthenium and bis-triarylamine units, five-stage near-infrared electrochromism with stepwise color changes accompanied by good contrast ratio and coloration efficiency has been realized in these films. The film characterization by scanning electronic microscopy and X-ray photoelectron spectroscopy techniques are presented as well.
Triphenylamine-based derivative as well as preparation method and application thereof
-
Paragraph 0078-0080, (2020/08/27)
The invention discloses a derivative based on triphenylamine, wherein the derivative has the following structural general formula described in the specification, wherein R is hydrogen, alkyl, alkoxy,C4-C18 aryl, and C1-C18 alkyl substituted or unsubstituted C2-C8 heterocyclic group, and X is nitro, cyano or C1-C18 alkoxy group substituted C1-C16 alkenyl, pyridyl, bipyridyl, terpyridyl, carboxyl substituted C4-C18 aryl hydrazino alkenyl, nitro substituted C4-C18 aryl hydrazino alkenyl, alkyl substituted sulfenyl, and alkoxy substituted sulfenyl. The triphenylamine-based derivative provided bythe invention is used as a hydrogen sulfide probe molecule; it is found that the derivative has high sensitivity and good selectivity to hydrogen sulfide, after a solution containing the probe is contacted with hydrogen sulfide, the fluorescence under ultraviolet light and the color under natural light are obviously different from those before contact, and the hydrogen sulfide can be well identified.
Effect of push-pull ruthenium complex adsorption conformation on the performance of dye sensitized solar cells
Araki, Koiti,Guimaraes, Robson R.,Matias, Tiago A.,Rosero, Wilmmer A. A.
, p. 2250 - 2264 (2020/10/13)
A new series of tris-(bipyridyl)ruthenium-like complexes based on the 4-tripheylamine-2,2':6',2''-terpyridine (TPA) push-pull ligand was prepared by incorporation of 4-carboxypyridine (cpy), 4,4'-dicarboxi-2,2'-bipyridine (dcbpy) and 4-carboxyterpyridine ligands (ctpy) ligands, in order to adsorb them on TiO2 in different anchoring conformations. The electron photoinjection and electron recombination processes of the respective dye-sensitized solar cells were greatly influenced by the molecular structure, which defined the surface concentration and surface charge on TiO2, such that the photoconversion efficiency was 10 times larger for [Ru(py)(dcbpy) (TPAtpy)] than for the [Ru(cpy)(bpy)(TPAtpy)](PF6) dye. Molecules anchoring in a more upright position and by a larger number of sites were shown to enhance the electron injection into TiO2 conduction band (CB) improving the short-circuit current (JSC), open circuit voltage (Voc) and the overall photoconversion efficiency. However, a positive net charge in the dye increased the back electron-transfer reactions and induced a decrease in both Voc and conversion efficiency.
Practical and selective hydroboration of aldehydes and ketones in air catalysed by an iron(ii) coordination polymer
Zhang, Guoqi,Cheng, Jessica,Davis, Kezia,Bonifacio, Mary Grace,Zajaczkowski, Cynthia
supporting information, p. 1114 - 1121 (2019/03/12)
The in air catalytic hydroboration of ketones and aldehydes with pinacolborane by an iron(ii) coordination polymer (CP) is carried out under mild and solvent-free conditions. The precatalyst is highly active towards a wide range of substrates including functionalized ketones and aldehydes in the presence of KOtBu as an activator, achieving a high turnover number (TON) of up to 9500. Excellent chemoselectivity to aldehydes over ketones was also revealed, which is in sharp contrast with the results obtained under inert atmosphere using the same catalyst system. This catalyst observed here is not only highly efficient but also recyclable for reuse for at least 5 times without losing its effectiveness.
Structure-dependent and environment-responsive optical properties of the trisheterocyclic systems with electron donating amino groups
Palion-Gazda, Joanna,Machura, Barbara,Klemens, Tomasz,Szlapa-Kula, Agata,Krompiec, Stanis?aw,Siwy, Mariola,Janeczek, Henryk,Schab-Balcerzak, Ewa,Grzelak, Justyna,Ma?kowski, Sebastian
, p. 283 - 300 (2019/03/26)
A series of 2,2′:6′,2″-terpyridine (terpy), 2,6-di(thiazol-2-yl)pyridine (dtpy), and 2,6-di(pyrazin-2-yl)pyridine (dppy) derivatives with electron donating amino groups (dimethylamine, piperidine, morpholine and diphenylamine) connected to the terpy/dtpy/
Optical Response of Terpyridine Ligands to Zinc Binding: A Close Look at the Substitution Effect by Spectroscopic Studies at Low Temperature
Bi, Xiaoman,Pang, Yi
, p. 3311 - 3317 (2016/05/02)
Terpyridine (tpy) ligands are popular building blocks to bind metal ions. Several tpy ligands with different substituents were synthesized and examined for their binding with zinc cation. The study revealed a large substituent effect on the zinc binding-i
Synthesis and Electrochromic Properties of New Terpyridine-Triphenylamine Hybrid Polymers
Fan, Congbin,Ye, Changqing,Wang, Xiaomei,Chen, Zhigang,Zhou, Yuyang,Liang, Zuoqin,Tao, Xutang
, p. 6465 - 6473 (2015/10/05)
Six metallic terpyridine-based complexes MLn (M = Ru, Fe; n = 1-3) with two triphenylamine sides have been designed and synthesized with the purpose of both providing four terminal active sites for the following electrochemical polymerization and prolongi
The d10 route to dye-sensitized solar cells: Step-wise assembly of zinc(ii) photosensitizers on TiO2 surfaces
Bozic-Weber, Biljana,Constable, Edwin C.,Hostettler, Nik,Housecroft, Catherine E.,Schmitt, Ralf,Schoenhofer, Ewald
supporting information; experimental part, p. 5727 - 5729 (2012/07/27)
Dye-sensitized solar cells have been assembled using a sequential approach: a TiO2 surface was functionalized with an anchoring ligand, followed by metallation with Zn(OAc)2 or ZnCl2, and subsequent capping with a chromophore functionalized 2,2′:6′,2″- terpyridine; the DSCs exhibit surprisingly good efficiencies confirming the effectiveness of the new strategy for zinc-based DSC fabrication.
