Crystal Structures of 9,9-Disubstituted Fluorene Derivatives Bearing Methyl, Hydroxymethyl or Pyridinylmethyl Groups DOI Creative Commons
Thomas Hanauer,

Pierre Seidel,

Wilhelm Seichter

et al.

Molbank, Journal Year: 2024, Volume and Issue: 2024(4), P. M1928 - M1928

Published: Dec. 3, 2024

The wide range of application possibilities fluorene derivatives, due to their unique physical and chemical properties, has made this class molecules important for various disciplines. synthesis these compounds the study properties are, therefore, great scientific interest. Due reactivity sensitivity oxidation, 9-position skeleton is often double substituted, example, ensure long-term stability materials. Single crystal structure analysis, among other methods, plays a very role in development fluorene-based systems. In paper, structures three 9,9-disubstituted derivatives bearing methyl, hydroxymethyl or pyridinylmethyl groups are described (three solvent-free one toluene solvate). A detailed evaluation intermolecular interactions, supported by Hirshfeld surface subject article.

Language: Английский

Deciphering the Role of Rhodanine Flanked Non-Fullerene Acceptor Molecules for Efficient Organic Photovoltaics DOI Open Access
Zobia Irshad, Muzammil Hussain, Riaz Hussain

et al.

International Journal of Molecular Sciences, Journal Year: 2025, Volume and Issue: 26(7), P. 3314 - 3314

Published: April 2, 2025

In recent years, extensive research has been conducted with the aim of developing non-fullerene acceptors as they have a promising ability to drive development cost-effective and highly efficient organic solar cells (OSCs). By harnessing potential rhodanine-flanked (NFAs), we proposed eight new A-D-A type NFAs (SBA1-SBA8) through precise end-cap modifications on both sides bridging-core unit. We performed various advanced quantum chemical analyses unveil these designed materials' compared them synthetic reference molecule (R). The series presented lower binding excitation energy, along narrower energy gaps 2.11 eV enhanced absorption at 671.20 nm 719.88 in gaseous chloroform environments, respectively. Furthermore, optoelectronic photophysical characterizations related electrostatic potential, density states, reorganization electron hole mobilities, transition matrix analysis reveal that materials could be efficiently used acceptor for photovoltaics. Additionally, check impact charge transfer donor: (D: A) interface, studied PTB7-Th:SBA1 D:A demonstrated remarkable interface phenomenon. Therefore, engineered SBA1-SBA8 represent significant advancement sustainable effective options high-performance OSCs.

Language: Английский

Citations

1
Recent Advances in Monocomponent Visible Light Photoinitiating Systems Based on Sulfonium Salts DOI Open Access
Frédéric Dumur

Polymers, Journal Year: 2023, Volume and Issue: 15(21), P. 4202 - 4202

Published: Oct. 24, 2023

During the last decades, multicomponent photoinitiating systems have been focus of intense research efforts, especially for design visible light systems. Although highly reactive three-component and even four-component designed, complexity to elaborate such mixtures has incited researchers monocomponent Type II photoinitiators. Using this approach, photosensitizer radical/cation generator can be combined within a unique molecule, greatly simplifying elaboration photocurable resins. In field, sulfonium salts are remarkable photoinitiators but these structures lack absorption in range. Over years, various structural modifications carried out order redshift their absorptions region. work, an overview different activable under reported date is proposed.

Language: Английский

Citations

9
Innovative Polyimide Modifications for Aerospace and Optoelectronic Applications: Synergistic Enhancements in Thermal, Mechanical, and Optical Properties DOI
Yuwei Chen, Yidong Liu, Yonggang Min

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 27, 2025

This study pioneers a molecular topology engineering strategy by incorporating twisted diamine motif into polyimide (PI) backbones, achieving an unprecedented integration of thermal stability, mechanical robustness, and optoelectronic functionality that surpasses conventional high-performance PIs. Unlike traditional PIs constrained performance trade-offs (e.g., compromised flexibility for resistance or sacrificed bulk properties functionalization), the modified PI demonstrates breakthrough balance: degradation temperature (T5%) exceeding 560 °C, glass transition (Tg) 380 tensile strength 160-180 MPa. Crucially, it exhibits green fluorescence (505-515 nm) under 365/467 nm excitation─a previously unreported optical capability in Molecular dynamics/density functional theory (MD/DFT) simulations coupled with UV-vis analyses reveal conformation induces orbital reorganization optimized stress distribution, establishing design framework multifunctional In contrast to additive-dependent modification approaches, this topology-driven enables intrinsic multifunctionality while maintaining compatibility industrial polymerization processes, overcoming scalability challenges production. The work redefines applications aerospace composites, systems, next-gen sensors extreme conditions, providing paradigm developing performance-integrated polymers through rational topological design.

Language: Английский

Citations

0
Preparation and sensing properties of fluorescent hydrogel based on chitosan modified with fluorene moiety DOI

Longhao Zhao,

Chunhua Xie,

Guangxuan Zhu

et al.

Journal of Macromolecular Science Part A, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 12

Published: March 11, 2025

Language: Английский

Citations

0
A Theoretical Investigation for Exploring the Potential Performance of Non-Fullerene Organic Solar Cells Through Side-Chain Engineering Having Diphenylamino Groups to Enhance Photovoltaic Properties DOI

Fakhar Abbas,

R. Bousbih,

Ali Raza Ayub

et al.

Journal of Fluorescence, Journal Year: 2024, Volume and Issue: unknown

Published: July 1, 2024

Language: Английский

Citations

3
Dibenzofulvene Derivatives as Promising Materials for Photovoltaic and Organic Electronics DOI Creative Commons
Agata Szłapa‐Kula, Przemysław Ledwon,

Agnieszka Krawiec

et al.

Energies, Journal Year: 2023, Volume and Issue: 16(24), P. 8027 - 8027

Published: Dec. 12, 2023

This review aimed to summarize the current knowledge regarding dibenzofulvene derivatives (DBF) investigated for photovoltaics and organic electronics applications. The work begins with a detailed analysis of synthesis modification methods derivatives’ structure. Then, physicochemical properties (thermal, electrochemical, optical) selected compounds are discussed in detail. Moreover, this article also presents DFT calculations performed so far. Finally, latest research on applications as dyes DSSC cells, hole transport materials (HTMs) perovskite solar cells (PSCs), light-emitting diodes (OLEDs), luminescent electrochromic materials. Considering above, may be helpful when designing new photovoltaic electronic

Language: Английский

Citations

6
Vinyl Ketones Containing Fluorene Skeletons for Acrylic Resins with High Refractive Index and Negative Birefringence DOI Creative Commons

Masatoshi Ohyama,

Rie Yasuda,

Hirotsugu Kuratani

et al.

Journal of Polymer Science, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 29, 2024

ABSTRACT The radical (co)polymerization of 2‐acryloylfluorene ( 1a ) and 2‐acryloyl‐9,9‐dimethylflureoene 1b with methyl methacrylate the thermal optical properties resulting (co)polymers are investigated. Because two groups at 9‐position prevent interaction aromatic rings, solubility is drastically improved for homopolymer . incorporation ‐units increases both glass transition temperature (118°C–170°C) 5% weight‐loss (289°C–354°C). In addition, refractive index polymers 589 nm from 1.49 to 1.65 higher mole fractions ‐units, whereas negative birefringence significantly increases. These features attributed restricted bond rotation rigid pendant bound backbone via an sp 2 carbon atom (carbonyl group).

Language: Английский

Citations

0
Crystal Structures of 9,9-Disubstituted Fluorene Derivatives Bearing Methyl, Hydroxymethyl or Pyridinylmethyl Groups DOI Creative Commons
Thomas Hanauer,

Pierre Seidel,

Wilhelm Seichter

et al.

Molbank, Journal Year: 2024, Volume and Issue: 2024(4), P. M1928 - M1928

Published: Dec. 3, 2024

The wide range of application possibilities fluorene derivatives, due to their unique physical and chemical properties, has made this class molecules important for various disciplines. synthesis these compounds the study properties are, therefore, great scientific interest. Due reactivity sensitivity oxidation, 9-position skeleton is often double substituted, example, ensure long-term stability materials. Single crystal structure analysis, among other methods, plays a very role in development fluorene-based systems. In paper, structures three 9,9-disubstituted derivatives bearing methyl, hydroxymethyl or pyridinylmethyl groups are described (three solvent-free one toluene solvate). A detailed evaluation intermolecular interactions, supported by Hirshfeld surface subject article.

Language: Английский

Citations

0