189178-08-3Relevant articles and documents
Metallated Graphynes as a New Class of Photofunctional 2D Organometallic Nanosheets
Huang, Bolong,Li, Jiahua,Sun, Jibin,Sun, Mingzi,Tang, Tianhong,Wang, Zhengping,Wong, Wai-Yeung,Xie, Zheng,Xu, Linli,Zhang, Hongyang,Zhang, Jianqi
, p. 11326 - 11334 (2021)
Two-dimensional (2D) nanomaterials are attracting much attention due to their excellent electronic and optical properties. Here, we report the first experimental preparation of two free-standing mercurated graphyne nanosheets via the interface-assisted bottom-up method, which integrates both the advantages of metal center and graphyne. The continuous large-area nanosheets derived from the chemical growth show the layered molecular structural arrangement, controllable thickness and enhanced π-conjugation, which result in their stable and outstanding broadband nonlinear saturable absorption (SA) properties (at both 532 and 1064 nm). The passively Q-switched (PQS) performances of these two nanosheets as the saturable absorbers are comparable to or higher than those of the state-of-the-art 2D nanomaterials (such as graphene, black phosphorus, MoS2, γ-graphyne, etc.). Our results illustrate that the two metallated graphynes could act not only as a new class of 2D carbon-rich materials, but also as inexpensive and easily available optoelectronic materials for device fabrication.
Hollow and microporous triphenylamine networks post-modified with TCNE for enhanced organocathode performance
Choi, Jaewon,Kim, Eui Soon,Ko, Ju Hong,Lee, Sang Moon,Kim, Hae Jin,Ko, Yoon-Joo,Son, Seung Uk
, p. 8778 - 8781 (2017)
Hollow microporous triphenylamine networks (H-MTPN) were post-modified with tetracyanoethylene (TCNE) to generate tetracyanobutadiene moieties in H-MTPN-TCNE. The H-MTPN-TCNE showed the improved electrochemical performance of cathode materials for lithium ion batteries, compared to the original H-MTPN.
Two-photon polarity probes built from octupolar fluorophores: Synthesis, structure-properties relationships, and use in cellular imaging
Le Droumaguet, Celine,Sourdon, Aude,Genin, Emilie,Mongin, Olivier,Blanchard-Desce, Mireille
, p. 2984 - 3001 (2013)
A series of octupolar fluorophores built from a triphenylamine (TPA) core connected to electron-withdrawing (EW) peripheral groups through conjugated spacers has been synthesized. Their photoluminescence, solvatochromism, and two-photon absorption (2PA) properties were systematically investigated to derive structure-property relationships. All derivatives exhibit two 2PA bands in the 700-1000 nm region: a first band at low energy correlated with a core-to-periphery intramolecular charge transfer that leads to an intense 1PA in the blue-visible range, and a second more intense band at higher energy due to an efficient coupling of the branches through the TPA core. Increasing the strength of the EW end groups or the length of the conjugated spacers and replacing triple-bond linkers with double bonds induces both enhancement and broadening of the 2PA responses, thereby leading to cross-sections up to 2100 GM at peak and higher than 1000 GM over the whole 700-900 nm range. All derivatives exhibit intense photoluminescence (PL) in low- to medium-polarity environments (with quantum yields in the 0.5-0.9 range) and display a strong positive solvatochromic behavior (with Lippert-Mataga specific shifts ranging from 15 000 to 27 500 cm-1), triple bonds, and phenyl moieties in the conjugated spacers, thereby leading to larger sensitivities than those of double bonds and thienyl moieties. More hydrophilic derivatives were also shown to be biocompatible, to retain their 2PA and PL properties in biological conditions, and finally to be suitable as polarity sensors for multiphoton cell imaging. Copyright
Pyran-annulated perylene diimide derivatives as non-fullerene acceptors for high performance organic solar cells
Li, Gang,Zhang, Yu,Liu, Tao,Wang, Shuaihua,Li, Dandan,Li, Jiewei,Li, Fengting,Yang, Lian-Ming,Luo, Zhenghui,Yang, Chuluo,Yan, He,Hao, Pin,Shang, Qiaoyan,Tang, Bo
, p. 11111 - 11117 (2018/11/03)
There has been growing interest in the effectual strategy of constructing non-fullerene acceptors for organic solar cells that may overcome the defect of traditional fullerene-based acceptors. Herein, two novel push-pull (acceptor-donor-acceptor) type sma
