Results 41 to 50 of about 35,154 (267)

Precisely Controlled Electrochemical Phosphonylation: Tailoring π‐Conjugated Polymer Properties for High‐Performance Organic Electrochemical Transistors

Angewandte Chemie, EarlyView.
The electrochemical C–H phosphonylation enabled precise control over the degree of functionalization (DOF). Systematic tuning of DOF (0.06–0.16) led to improved µC*, transconductance, and time constant values. This finding demonstrates that moderate functionalization enhances organic electrochemical transistor (OECT) performance, opening new avenues ...
Kohei Taniguchi, Kosuke Sato, Shinsuke Inagi   +2 more
wiley   +2 more sources

Preparation of Chiral Cholestanofluorene and Its Electron-Rich Derivatives for Isolation of a Stable Cation−Radical Salt [PDF]

, 2007
A simple and practical synthesis of a variety of chiral fluorene derivatives is described where a cholestane moiety is attached to the carbon 9 of the fluorene ring system from readily available starting materials.
Debroy, Paromita, Lindeman, Sergey V., Rathore, Rajendra, Shukla, Ruchi   +3 more
core   +1 more source

Cyclic Olefin Copolymers as Versatile Materials for Advanced Engineering Applications

Advanced Functional Materials, EarlyView.
Cyclic olefin copolymers (COCs) are presented as highly versatile materials combining tunable synthesis, excellent optical properties, and mechanical robustness. Their potential spans microfluidics, bioengineering, and advanced electronics, while emerging self‐healing and sustainable solutions highlight future opportunities.
Giulia Fredi, Norma Mallegni, Andrea Dorigato, Mario Milazzo   +3 more
wiley   +1 more source

Low-threshold organic laser based on an oligofluorene truxene with low optical losses [PDF]

, 2009
A blue-emitting distributed feedback laser based on a star-shaped oligofluorene truxene molecule is presented. The gain, loss, refractive index, and (lack of) anisotropy are measured by amplified spontaneous emission and variable-angle ellipsometry.
Dawson, M.D., Kanibolotsky, A.L., Perepichka, I.F., Samuel, Ifor D. W., Shaw, Paul E., Skabara, P.J., Tsiminis, Georgios, Turnbull, Graham A., Wang, Yu   +8 more
core   +1 more source

Fluorescent Nanosensor for Indole‐3‐Propionic Acid Detection in Gut Health Monitoring

Advanced Healthcare Materials, EarlyView.
This work introduces a fluorescent nanosensor system with two optical modalities for detection of indole‐3‐propionic acid (IPA) gut metabolite: (1) blue‐emitting cationic conjugated polyelectrolyte (CP3) and (2) near‐infrared (NIR)‐emitting CP3‐wrapped single‐walled carbon nanotube (SWNT).
Mervin Chun‐Yi Ang, Jonathan Wei Jie Lee, Sayyid Mohaideen, Gabriel Sánchez‐Velázquez, Song Wang, Yangyang Han, Liu Lin, Germaine Yong, Raju Cheerlavancha, Duc Thinh Khong, Jianhong Ching, Sharon Hong Yu Han, Jun Yu Yeo, Lian Xu, Gajendra Pratap Singh, Michael S. Strano   +15 more
wiley   +1 more source

9,9-Diethyl-7-ethynyl-N,N-diphenyl-9H-fluoren-2-amine

IUCrData, 2016
In the title compound, C31H27N, the fluorene unit is approximately planar (r.m.s deviation = 0.0255 Å). The dihedral angles between the fluorene fused ring system and two phenyl rings are 88.37 (5) and 66.31 (6)°.
J. J. Novina, G. Vasuki, Prachi Singh, K. R. Justin Thomas   +3 more
doaj   +1 more source

Spiro‐Phenothiazine Hole‐Transporting Materials: Unlocking Stability and Scalability in Perovskite Solar Cells

Advanced Materials, EarlyView.
Fluorene‐functionalized spiro‐phenothiazine (PTZ‐Fl) exhibits strong Li+ affinity and thermal stability, enabling a PCE of 25.75% in small‐area cells and 22.07% in 25 cm2 modules. Under ISOS‐L3 conditions, PTZ‐Flbased devices retain over 80% efficiency after 1000 hours, demonstrating superior stability and scalability compared to spiro‐OMeTAD for next ...
Javier Urieta‐Mora, Seung Ju Choi, Jaeki Jeong, Silvia Orecchio, Inés García‐Benito, Manuel Pérez‐Escribano, Joaquín Calbo, Likai Zheng, Minseop Byun, Seyeong Song, Gi‐Hwan Kim, Shaik M. Zakeeruddin, Seog‐Young Yoon, Yimhyun Jo, Agustín Molina‐Ontoria, Enrique Ortí, Nazario Martín, Michael Grätzel   +17 more
wiley   +1 more source

Donor–Acceptor Pentacene Analogues With Near‐Infrared Emission and Tunable Aromaticity

Angewandte Chemie, EarlyView.
Air‐ and photostable heterocyclic pentacene analogues with donor and acceptor groups flanking a para‐quinodimethane core exhibit large dipole moments, narrow bandgaps, reversible redox behavior, and NIR‐I to NIR‐II absorption and emission with pronounced solvatochromism.
Krzysztof Nowak, Olaf Morawski, Muhammad Yasir Mehboob, Maja Morawiak, Krzysztof Noworyta, Cina Foroutan‐Nejad, Marek Grzybowski   +6 more
wiley   +2 more sources

The Synthesis and Spectral Properties of Merocyanine Dyes Based on 9H‑Fluorene-2,7-Dicarbonitrile

Журнал органічної та фармацевтичної хімії
Di-, tetra-, and hexamethine merocyanine dyes bearing donor heterocyclic end groups of different electron-donating abilities and the 9H-fluorene-2,7-dicarbonitrile moiety as the acceptor end group have been synthesized.
Iryna V. Kurdiukova, Volodymyr V. Kurdyukov, Andrii V. Kulinich   +2 more
doaj   +1 more source

Deep Blue Light Amplification from a Novel Triphenylamine Functionalized Fluorene Thin Film

Molecules, 2019
The development of high performance optically pumped organic lasers operating in the deep blue still remains a big challenge. In this paper, we have investigated the photophysics and the optical gain characteristics of a novel fluorene oligomer ...
Tersilla Virgili, Marco Anni, Maria Luisa De Giorgi, Rocio Borrego Varillas, Benedetta M. Squeo, Mariacecilia Pasini   +5 more
doaj   +1 more source