Results 51 to 60 of about 18,467 (263)

Boron-Nitrogen Doped Dihydroindeno[1,2-b]fluorene Derivatives as Acceptors in Organic Solar Cells

, 2019
The electrophilic borylation of 2,5-diarylpyrazines results in the formation of boron-nitrogen doped dihydroindeno[1,2-b]fluorene which can be synthesized via mildly air-sensitive techniques and the end products handled readily under atmosphereic ...
Thomas, Pickl, J. Mikko, Rautiainen, Benjamin S., Gelfand, Matthew, Morgan, Maryam, Nazari, Heikki M., Tuononen, Gregory C., Welch, Warren, Piers   +7 more
core   +1 more source

High Free‐Volume Imidazole‐Based Ionomers for High‐Temperature Proton Exchange Membrane Fuel Cells

Advanced Science, EarlyView.
High free‐volume imidazole‐based ionomers (PF4IM‐72) enable enhanced phosphoric acid uptake and efficient proton transport, delivering peak power densities of 0.645 W cm−2 at 160 °C and 0.838 W cm−2 at 200 °C in HT‐PEMFCs. This work highlights a promising platform for next‐generation ionomers with improved high‐temperature performance and stability ...
Ge Chao, Hyeon Keun Cho, Chang Yeon Hyun, Shirong Li, Jong Geun Seong, So Young Lee, Nanwen Li, Young Moo Lee   +7 more
wiley   +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

Computation‐Guided Control of Excited‐State Deactivation through Modulation of Conical‐Intersection Accessibility by Donor–Acceptor Asymmetry in Bridged Stilbene AIE Luminogens

Advanced Science, EarlyView.
Donor–acceptor asymmetry modulates conical‐intersection accessibility and topology in bridged stilbenes, providing mechanistic insight into excited‐state deactivation and aggregation‐induced emission (AIE). ABSTRACT A computation‐guided investigation of asymmetric donor–acceptor bridged stilbenes reveals structure–property relationships governing ...
Takuya Tanaka, Satoshi Suzuki, Hirosato Koyanagi, Kiyoshi Miyata, Riki Iwai, Kazunobu Igawa, Ken Onda, Ben Zhong Tang, Gen‐ichi Konishi   +8 more
wiley   +1 more source

Donor Extended Blue TADF Dendrimer for High‐Performance Solution‐Processed OLEDs

Advanced Science, EarlyView.
A dendronized MR‐TADF emitter, DOBNA‐SpAc‐DCz, was designed to improve solubility, hole transport, and exciton dynamics for solution‐processed OLEDs. Incorporation of ter(tert‐butylcarbazole) dendrons decreases ΔEST and accelerates RISC, yielding short delayed lifetimes (∼2 µs).
Mahni Fatahi, Yuka Yasuda, Ryo Kondo, Hironori Kaji, Eli Zysman‐Colman   +4 more
wiley   +1 more source

A novel diethyl 2-(9-fluorenyl) malonate functionlized SBA-15 for selective optical sensing of Iron [PDF]

Journal of Nanostructures, 2019
In this study, highly ordered mesoporous silica material (SBA-15) functionalized with Diethyl 2 - (9 -fluorenyl) malonate as a flourophore is reported.
Alireza Badiei, Marzieh Yadavi, Mehdi Karimi   +2 more
doaj   +1 more source

Organic Photoelectrochemical Cells Beyond Performance: Interface and Catalyst Engineering for Durability

Advanced Energy Materials, EarlyView.
Organic photoelectrochemical cells based on π‐conjugated semiconductors offer a versatile platform for solar fuel generation. This review outlines operating principles, device architectures, and key metrics, and highlights advances in p‐ and n‐type photoelectrodes, interfacial engineering, and catalyst integration.
Jaehyeong Kim, Jung Min Ha, Yeonjeong Lee, Seung Won Oh, Wangyeon Lee, Munsu Kwon, Soonyong Lee, Jin Young Kim, Han Young Woo   +8 more
wiley   +1 more source

Saturated deep-blue emitter based on a spiro[benzoanthracene-fluorene]-linked phenanthrene derivative for non-doped organic light-emitting diodes

, 2014
A spiro[benzoanthracene-fluorene] derivative containing a phenanthrene moiety, 2',3-di(phenanthren-9-yl)spiro(benzo[de]anthracene-7,9'-fluorene] (DPSBAF), was prepared by a Suzuki coupling reaction.
Liang, Houjie, Wang, Suidong, Wang, Xinxin, Ouyang, Xinhua, Ge, Ziyi, Liu, Zhiyang, Zhang, Xingye   +6 more
core   +1 more source

Auf dem Weg zu chromoselektiven Transformationen in biologischen Systemen: Perspektiven und Herausforderungen

Angewandte Chemie, EarlyView.
Die Kontrolle biologischer Systeme mit organischen Chromophoren hat sich zu einer vielversprechenden Strategie entwickelt und findet Anwendung von der chemischen Biologie bis hin zur Medizin. Die Komplexität von In‐vivo‐Systemen lässt sich jedoch nicht mit nur einer einzigen Lichtwellenlänge adäquat abbilden.
Nadja A. Simeth
wiley   +1 more source

Spiro-Fluorene-Containing Cyclic Olefin Polymers

For application to optical polymer materials with a high refractive index and low birefringence as well as high thermal stability and low hygroscopicity, we have performed the ring-opening metathesis (co)­polymerization (ROMP, ROMCP) of fluorene-based ...
Saki Ishii (16834447), Yoshiya Ota (1915906), Shin-ichi Matsuoka (1655062), Masato Suzuki (833447)   +3 more
core   +1 more source