Results 91 to 100 of about 90,051 (313)

Measurements of exciton diffusion in conjugated polymers

, 2009
The exciton diffusion length, which is the distance an exciton can diffuse in its lifetime, is an important parameter that has a critical impact on the operation of many organic optoelectronic devices, including organic solar cells, light emitting diodes
Shaw, Paul E.
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2D Conjugated Polymers: Exploiting Topological Properties for the Rational Design of Metal-Free Photocatalysts

, 2022
Solar-to-hydrogen conversion is one of the most promising avenues to provide emission-free fuels and long-term chemical energy storage. Wide-range application crucially requires high-performance photocatalysts that are environmentally benign and free of ...
Yu, Jing, Xinyue, Zhu, Thomas, Heine, Sabine, Maier   +3 more
core   +1 more source

A Simplified Laminar Flow Model for the Pultrusion of Glass Fiber/Polyethylene Terephthalate Commingled Yarns

Advanced Engineering Materials, EarlyView.
A simplified thermoplastic pultrusion model is developed to predict thermal fields in glass fiber/polyethylene terephthalate (GF/PET) composites with reduced computational cost. By combining effective material homogenization, validation against literature data, and Gaussian‐process‐based optimization, the study reveals how heating limits, pulling speed,
Elder Soares, Nadège Bouchonneau, Christian Jochum, Donald Radford   +3 more
wiley   +1 more source

Solid state optical conjugated polymer amplifier; with ultrafast gain switching

, 2008
Conjugated polymers are organic materials which are attractive as optoelectronic devices because they have a combination of broad band emission, high gain, versatility in processing, are ductile and can be electrically pumped.
Amarasinghe, Dimali C. V.
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Photocatalytic Hydrogen Evolution from Water Using Heterocyclic Conjugated Microporous Polymers: Porous or Non-Porous?

, 2018
Three series of conjugated microporous polymers (CMPs) were studied as photocatalysts for producing hydrogen from water using a sacrificial hole-scavenger. In all cases, dibenzo[b,d]thiophene sulfone polymers outperformed their fluorene analogs. A porous
Catherine M., Aitchison, Andrew I., Cooper, Reiner Sebastian, Sprick, Duncan J., Woods, Yang, Bai   +4 more
core   +1 more source

Luminescent sp2Carbon-Linked 2D Conjugated Polymers with High Photostability

, 2020
Luminescent organic materials with high photostability are essential in optoelectronics, sensor, and photocatalysis applications. However, small organic molecules are generally sensitive to UV irradiation, giving rise to chemical decompositions.
Biswal, BP, Reineke, S, Imbrasas, P., Huanhuan Shi, Feng, X, Li, Yungui, Li, Y., Paasch, S., Addicoat, M., Shunqi Xu, Shi, H., Imbrasas, Paulius, Lenk, S., Imbrasas, P, Park, S., Marcus Richter, Feng, Xinliang, Brunner, E, Paulius Imbrasas, Sebastian Reineke, Xu, S, Biswal, B., Brunner, Eike, Biswal, Bishnu P., Xinliang Feng, Addicoat, MA, Brunner, E., Richter, M., Reineke, Sebastian, Richter, Marcus, Shi, H, Silvia Paasch, Yungui Li, SangWook Park, Addicoat, Matthew A., Lenk, Simone, Park, SangWook, Xu, S., Xu, Shunqi, Park, S, Paasch, S, Bishnu P. Biswal, Reineke, S., Shi, Huanhuan, Li, Y, Paasch, Silvia, Lenk, S, Eike Brunner, Simone Lenk, Richter, M, Feng, X., Matthew A. Addicoat   +51 more
core   +1 more source

Additive Manufacturing of Continuous Fibre Reinforced Composites: Process, Characterisation, Modelling, and Sustainability

Advanced Engineering Materials, EarlyView.
Additive manufacturing provides precise control over the placement of continuous fibres within polymer matrices, enabling customised mechanical performance in composite components. This article explores processing strategies, mechanical testing, and modelling approaches for additive manufactured continuous fibre‐reinforced composites.
Cherian Thomas, Amir Hosein Sakhaei
wiley   +1 more source

Identification of excited states in conjugated polymers [PDF]

, 2002
This thesis reports quasi steady state photoinduced absorption measurements from three conjugated polymers: polypyridine (PPy), polyfluorene (PFO) and the emeraldine base (EB) form of polyaniline.
Hartwell, Lewis John
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Symbolic Regression and Multi‐Objective Optimization of the Flory–Huggins Interaction Parameter for Hydrogels

Advanced Engineering Materials, EarlyView.
We develop a data‐driven method to derive the mathematical expressions of the Flory–Huggins interaction parameter χ for the swelling behavior of temperature–responsive hydrogels. Starting from initial assumptions of χ, our workflow combines Bayesian optimization, Flory–Rehner theory, and symbolic regression to generate candidate χ expressions.
Yawen Wang, Adrian Ehrenhofer, Thomas Wallmersperger   +2 more
wiley   +1 more source

Characterisation of materials for organic photovoltaics

, 2008
Organic solar cells offer the possibility for lightweight, flexible, and inexpensive photovoltaic devices. This thesis studies the physics of a wide range of materials designed for use in organic solar cells.
Thomsen, Elizabeth Alice
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