NDLI: Synergistic photoluminescence enhancement in conjugated polymer-di-ureasil organic

Content Provider	Royal Society of Chemistry (RSC)
Author	Evans, Rachel C. Willis-Fox, Niamh Carlos, Luís D. Marques, Ana-Teresa Arlt, Jochen Scherf, Ullrich Burrows, Hugh D.
Copyright Year	2015
Abstract	Poly(fluorene) conjugated polyelectrolyte (CPE)-di-ureasil organic–inorganic composites have been prepared using a versatile sol–gel processing method, which enables selective localisation of the CPE within the di-ureasil matrix. Introduction of the CPE during the sol–gel reaction leads to a homogeneous distribution of the CPE throughout the di-ureasil, whereas a post-synthesis solvent permeation route leads to the formation of a confined layer of the CPE at the di-ureasil surface. The CPE and the di-ureasil both function as photoactive components, contributing directly to, and enhancing the optical properties of their composite material. The bright blue photoluminescence exhibited by CPE-di-ureasils is reminiscent of the parent CPE; however the distinct contribution of the di-ureasil to the steady-state emission profile is also apparent. This is accompanied by a dramatic increase in the photoluminescence quantum yield to >50%, which is a direct consequence of the synergy between the two components. Picosecond time-correlated single photon counting measurements reveal that the di-ureasil effectively isolates the CPE chains, leading to emissive trap sites which have a high radiative probability. Moreover, intimate mixing of the CPE and the di-ureasil, coupled with their strong spectral overlap, results in efficient excitation energy transfer from the di-ureasil to these emissive traps. Given the simple, solution-based fabrication method and the structural tunability of the two components, this approach presents an efficient route to highly desirable CPE-hybrid materials whose optoelectronic properties may be enhanced and tailored for a targeted application.
Starting Page	7227
Ending Page	7237
Page Count	11
File Format	HTM / HTML PDF
ISSN	20416520
Volume Number	6
Issue Number	12
Journal	Chemical Science
DOI	10.1039/c5sc02409a
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Subscribed
Subject Keyword	Polyelectrolyte Fluorene Bright Blue Quantum Picosecond Optoelectronics Photoluminescence CPE Solvent Composite material Ultrafast laser spectroscopy
Content Type	Text
Resource Type	Article
Subject	Chemistry

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Supporting Information Synergistic photoluminescence enhancement in conjugated polymer-di-ureasil organic-inorganic composites

Ureasil organic–inorganic hybrids as photoactive waveguides for conjugated polyelectrolyte luminescent solar concentrators

Synthesis and characterization of polyfluorene derivatives for blue light emitting diode.

Conjugated zwitterionic polyelectrolyte-based interface modification materials for high performance polymer optoelectronic devices

Efficient Blue Light-Emitting Diodes Based on Conjugated Polymers with Fluorinated Silole Chemically Doped in Fluorene–Carbazole Main Chain

Fabrication of highly photoluminescent quantum dot-polymer composite micropatterned surface using thiol-ene chemistry

Tunable White‐Light Emission from Conjugated Polymer‐Di‐Ureasil Materials

Conformation pre-organization in fluorene-based conjugated polymer for simultaneous enhancement of luminescence and charge mobility

Effects of organic and inorganic network development on the optical properties of ORMOSILs

Synergistic photoluminescence enhancement in conjugated polymer-di-ureasil organic–inorganic composites

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Supporting Information Synergistic photoluminescence enhancement in conjugated polymer-di-ureasil organic-inorganic composites

Ureasil organic–inorganic hybrids as photoactive waveguides for conjugated polyelectrolyte luminescent solar concentrators

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Synergistic photoluminescence enhancement in conjugated polymer-di-ureasil organic–inorganic composites