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a) CIE plot showing the change in coordinates as more rhodamine B solution is added to the PEG 113 -b-DVB 800 -co-AA/An 200 dispersion. b) Image of the white-light-emitting solution and fluorescence emission spectrum. c) Normalized fluorescence emission profile of a 1 mg mL −1 dispersion of PEG 113 -b-DVB 800 -co-AA/An 200 and 1.63 ppm of rhodamine B in methanol.
Source publication
A dispersible porous polymer (PEG113‐b ‐DVB800‐co ‐AA200) based on the controlled radical polymerization of divinylbenzene and acrylic acid with a poly(ethylene glycol) (PEG) macrochain transfer agent (macro‐CTA) is synthesized and postsynthetically modified with anthracene. This blue‐emitting porous polymer is used to encapsulate the yellow‐emitti...
Context in source publication
Context 1
... fine-tuning of the rhodamine B concentration (Section S7, Supporting Information), it was possible to generate a white-light emitting solution upon addition of 1.63 ppm of rhodamine B to a dispersion (1 mg mL −1 ) of PEG 113 -b-DVB 800 -co-AA/ An 200 (Figure 4). Under UV irradiation (λ max = 355 nm) a whitelight emitting solution was created with commission internationale de l'éclairage (CIE) coordinates of X = 0.33, Y = 0.32, close to that of an idealized white light source (X = 0.33, Y = 0.33). ...
Citations
Luminescent films based on conjugated porous polymers CPP-1 (PLQY=83%) and CPP-2 (PLQY=61%) were prepared for solid-state lighting, resulting in warm white light with CIE coordinates of (0.33, 0.44) when the ratio of CPP-2 to CPP-1 was 1 : 4.
Porous organic polymers (POPs) have received increasing attention due to their properties, such as permanent porosity with tunable pore size, robust structure, high surface area, and versatility of the backbone for the desired function. Such properties prove to be quite valuable for a plethora of sustainable applications. POPs can largely be classified as crystalline or amorphous based on the degree of long-range order. Crystalline POPs such as two-dimensional covalent organic frameworks possess characteristics such as unimodal pores with long one-dimensional pore channels allowing size-selective guest recognition, whereas amorphous network POPs give rise to a hierarchical pore size distribution enabling facile ion and mass transport. Since structure plays an undeniably vital role in the function, POPs with contrasting degrees of long-range order are suitable for some applications more than others. To address this conundrum, here we discuss at length the impact of the extent of structural order of the POPs in the context of four key applications, namely water treatment, electrochemical energy storage, heterogeneous catalysis, and optical sensing along with light-harvesting. Additionally, the formation principles of POPs with varying degrees of long-range order in view of kinetics and thermodynamics have been outlined. Furthermore, we provide a general guideline for the specific use of crystalline and amorphous POPs along with future avenues of exploration mitigating the current challenges towards the design of task-specific new-generation functional porous materials.
