A soluble conjugated porous organic polymer: efficient white light emission in solution, nanoparticles, gel and transparent thin film

Pallavi, Pragyan; Bandyopadhyay, Sujoy; Louis, Jesna; Deshmukh, Arundhati; Patra, Abhijit

doi:10.1039/c6cc08903h

Cited by 76 publications

(79 citation statements)

References 43 publications

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“…The CIE coordinates of the white light obtained from the gel were found to be 0.32, 0.36 (Figure c). Apart from the CIE coordinates, the quality of white light is evaluated by the color rendering index (CRI) and correlated color temperature (CCT) . The CRI and CCT values of WLE gel were found to be 79 (Figure S11a) and 6003 K, respectively suggesting potential applications as warm white‐light emitting material .…”

Section: Resultsmentioning

confidence: 99%

“…The strong white‐light emission was observed from the entire thin film under the illumination of UV light (Figure S11 c). The quantum yield of the WLE gel was found to be

32.6 \pm

1.8 % (Figure S13), which is significantly higher compared to the reported hydrogel like TPDC‐Bz based WLE gel (14 %), WEG1 (6 %) and WEG2 (7 %) (Tables S5 and S6).…”

Section: Resultsmentioning

confidence: 99%

“…The white‐light‐emitting (WLE) organic materials offer promising applications in the low cost flat‐panel display and lighting devices . A suitable combination of fluorophores in an organized assembly that emits either the three primary colors, red (R), green (G) and blue (B) or two complementary colors, orange and cyan, covering the visible spectral window (400–800 nm) leads to white‐light emission . In this context, the tuning of energy transfer processes through a subtle balance between different luminophores is a prerequisite.…”

Section: Introductionmentioning

confidence: 99%

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Tuning the Förster Resonance Energy Transfer through a Self‐Assembly Approach for Efficient White‐Light Emission in an Aqueous Medium

Pallavi

Ahir

et al. 2017

Chemistry A European J

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A simple and cost-effective methodology employing environmentally benign substances for the fabrication of white-light emitting materials is important for practical applications in the field of lighting and display devices. Designing purely organic-based white-light-emitting systems with high quantum efficiency in aqueous media is an unmet challenge. With this objective, a new class of pyridoindole-based hydrophobic fluorophore 6,7,8,9-tetrapropylpyrido[1,2-a]indole-10-carbaldehye (TPIC) was introduced. A strategy of self-assembly using nonionic surfactants was employed to enhance the fluorescence of TPIC in an aqueous medium and was exploited as energy donor. The steady-state and time-resolved emission spectra analysis revealed the micelle-mediated energy transfer from TPIC to Nile red (energy acceptor) leading to tunable fluorescence along with white-light emission. The white-light emitting aqueous solution was obtained with the Commission Internationale de l'Eclairage (CIE) chromaticity coordinates of (0.33, 0.36) and significantly high quantum yield of 37 %. Solid-state white-light emission was achieved retaining the assembly of fluorophores in the form of a gel having the high quantum efficiency of 33 % with CIE coordinates of (0.32, 0.36); close to that of pure white light. The bright white luminescence of the inscription prepared using white-light emitting gel on a solid substrate offers promising applications for full-color flat panel displays.

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Section: Resultsmentioning

confidence: 99%

“…The strong white‐light emission was observed from the entire thin film under the illumination of UV light (Figure S11 c). The quantum yield of the WLE gel was found to be

32.6 \pm

1.8 % (Figure S13), which is significantly higher compared to the reported hydrogel like TPDC‐Bz based WLE gel (14 %), WEG1 (6 %) and WEG2 (7 %) (Tables S5 and S6).…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Tuning the Förster Resonance Energy Transfer through a Self‐Assembly Approach for Efficient White‐Light Emission in an Aqueous Medium

Pallavi

Ahir

et al. 2017

Chemistry A European J

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“…The isotherms also showed a hysteresis loop in the desorption isotherm which is attributed to the mesoporous structure which may be due to the stacking of polymer clusters ( Figure a,b). The highest surface area of soluble analogues was 646 m 2 g −1 , which is prior to most of the reported SPOPs such as SCMP1 (505 m 2 g −1 ), TPDC P1 (410 m 2 g −1 ), SPCPs (535 m 2 g −1 ), HPs (485 m 2 g −1 ), and TPDC‐BZ (610 m 2 g −1 ) . To better understand the mechanism of pore formation, nitrogen sorption isotherms have been evaluated after dissolving poly(DCDM)‐395 in a good solvent (CHCl 3 ) that was slowly evaporated.…”

Section: Methodsmentioning

confidence: 99%

Soluble Hyperbranched Porous Organic Polymers

Yang

Feng

Ren

et al. 2018

Macromol. Rapid Commun.

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Soluble porous organic polymers (SPOPs) are currently the subject of extensive investigation due to the enhanced processability compared to insoluble counterparts. Here, a new concept for the construction of SPOPs is presented, which combines the unique topological structure of hyperbranched polymers with rigid building blocks. By using this facile, one-step strategy, a class of novel SPOPs which possess surface areas up to 646 m g have been synthesized. The extended π-conjugated backbone affords the polymers bright fluorescence under UV irradiation. Interestingly, after dissolution in a suitable solvent that was slowly evaporated, the polymers retain a large extent of porosity. The SPOPs are potential candidates for gas storage and separation, photovoltaic, and biological applications. In particular, due to the presence of an internal porous structure and open conformations, they show high drug loading efficiency (1.91 g of ibuprofen per gram), which is considerably higher than conventional porous organic polymers.

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“…Due to the unique structures, porous organic polymers might be developed as adsorbing materials, which can promote the absorbing ability . They play important roles in catalyzing, environmental protection and remediation, gas adsorption and storage and so on.…”

Section: Introductionmentioning

confidence: 99%

Facile Preparation of Micro/Mesoporous Conjugated Polymers for Multifunctional Sensing and Separation Applications

et al. 2018

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Micro/mesoporous conjugated polymers (MCPs) incorporate fluorescence, adsorption, and electronic conductivity together were synthesized. In this paper, a family of MCPs was prepared by Suzuki–Miyaura coupling‐reaction using different building blocks. MCPs were studied by Fourier Transform infrared spectroscopy (FTIR), solid‐state 13C Nuclear magnetic resonance (13CNMR) spectra, fluorescence spectra, Ultraviolet–visible spectroscopy (UV‐vis), scanning electron microscope (SEM), and Brunauer–Emmett–Teller (BET). The as‐prepared MCPs are of porous structure and fluorescence. The pore diameters and specific surface areas varied by changing the starting monomers. The MCPs could be linear chain and network structure depending on the starting monomers. The specific surface areas of network MCPs are larger than linear chain ones. The fluorescence MCPs could be employed as chemosensors for detection of metal ions. Also the MCPs could be used as adsorbent for separation of metal ions and organic dyes. The maximum absorption capacity of MCP‐4 for Fe3+ ions reached 152 mg/g within 30 min. Meanwhile, when MCPs were used for the removal of organic dyes, the adsorption capability of MCP‐4 reached 488 mg/g and 491 mg/g for methylene blue (MB) and rhodamine (RhB) within 30 min respectively. With the introduction of N, S atoms to the building blocks, the sensing and removal ability were enhanced. Furthermore, the MCP family owns electric conductivity which may be employed as solar cell materials.

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A soluble conjugated porous organic polymer: efficient white light emission in solution, nanoparticles, gel and transparent thin film

Cited by 76 publications

References 43 publications

Tuning the Förster Resonance Energy Transfer through a Self‐Assembly Approach for Efficient White‐Light Emission in an Aqueous Medium

Tuning the Förster Resonance Energy Transfer through a Self‐Assembly Approach for Efficient White‐Light Emission in an Aqueous Medium

Soluble Hyperbranched Porous Organic Polymers

Facile Preparation of Micro/Mesoporous Conjugated Polymers for Multifunctional Sensing and Separation Applications

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