Abstract
High potential of emission chemistry has been visualized in many fields, from sensors and imaging to displays. In general, conjugated polymers are the top rankers for such chemistry, despite the fact that they bring solubility problems, high expenses, toxicity and demanding synthesis. Metal-free polymeric semiconductor graphitic carbon nitride (g-CN) has been an attractive candidate for visible light-induced photocatalysis, and its emission properties have been optimized and explored recently. Herein, we present modified g-CN nanoparticles as organodispersible conjugated polymer materials to be utilized in a heterophase emission systems. The injection of a g-CN organic dispersion in aqueous polymer solution not only provides retention of the shape by Pickering stabilization of g-CN, but high intensity emission is also obtained. The heterophase all-liquid emission display can be further modified by the addition of simple conjugated organic molecules to the initial g-CN dispersion, which provides a platform for multicolor emission. We believe that such shape-tailored and stabilized liquid–liquid multicolor emission systems are intriguing for sensing, displays and photonics.
Highlights
Light emission with spatial control is the base of imaging, optoelectronics and active displays [1].Typically, advanced π-conjugated polymers that are capable of light absorption and emission are used, e.g., in OLEDS or for optical superresolation microscopy [2,3,4]
Polymeric graphitic carbon nitride (g-CN) is a potential replacement and has striking advantages, such as low cost, non-toxicity and ease of tenability [9]. g-CN is ideally composed of carbon and nitrogen in tri-s-triazine repeating units to form a conjugated polymer structure, and can be synthesized from simple nitrogen-rich commodity molecules such as melamine and urea by thermal condensation at around 500 ◦ C [10]
Organodispersible CMp-vTA was synthesized via one pot photoinduced surface grafting on Organodispersible CMp-vTA was synthesized via one pot photoinduced surface grafting on CMp
Summary
Advanced π-conjugated polymers that are capable of light absorption and emission are used, e.g., in OLEDS or for optical superresolation microscopy [2,3,4]. Such experiments can be conducted from a dissolved single phase or from a colloidal state using particulate dispersions [5,6,7,8]. Carbon nitride nanosheets can be attained by the thermal condensation of acid-treated melamine cyanurate complex at 650 ◦ C [14]. Carbon nitride nanosheets can be attained by the thermal condensation of acid-treated melamine cyanurate complex at 650 ◦ C [14]. g-CN ideally has surface defects and a negative surface charge, and can be modified via pre- or post-modification methods [15]
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