Luminescence characteristics and room temperature phosphorescence of naphthoic acids in polymers

Gahlaut, Richa; Joshi, H. C.; Joshi, Neeraj Kumar; Pandey, Nupur; Arora, Priyanka; Rautela, Ranjana; Suyal, Kanchan; Pant, Sanjay

doi:10.1016/j.jlumin.2013.01.031

Cited by 31 publications

(25 citation statements)

References 26 publications

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“…Therefore, Pant et al. chose PVA, PMMA, and cellulose acetate (CA) as three host matrices to study this [ 42 ] . Interestingly, it was found that the luminophore 1‐naphthoic acid represented in Scheme 3 could only emit strong phosphorescence in a specific matrix.…”

Section: Heavy Atom–free Rtp Polymersmentioning

confidence: 99%

“…It is apparent that the difference in the microenvironment brought by the host matrices and the interactions with the luminophore will have an unignorable influence on luminescence behavior. Therefore, Pant et al chose PVA, PMMA, and cellulose acetate (CA) as three host matrices to study this [42] . Interestingly, it was found that the luminophore…”

Section: Doped Polymer Systemsmentioning

confidence: 99%

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Recent progress on pure organic room temperature phosphorescent polymers

2021

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So far, pure organic room temperature phosphorescence (RTP) materials are developing rapidly and have become a research hotspot in the scientific community. They are regarded as valuable resources with great potential for development in many fields, such as biomedicine, information multi‐level encryption, smart anti‐counterfeiting, and so on. Among them, a series of pure organic RTP polymer systems emerged at the right moment based on the excellent properties of polymers such as easy processing, low cost, and good biocompatibility. Furthermore, the huge molecular weight, long‐chain intertwined structure, and potential interactions with phosphors of polymers make them a focus for RTP emission. Herein, we describe the development history of this system in detail, explore the necessary factors for highly efficient emission from the phosphorescence emission process, and based on the dual effects of enhancing phosphorescence emission and shortening luminescence lifetime brought by heavy atoms, we summarize the internal mechanism and achievements of various researches from the perspective of heavy atom–containing and non‐heavy atom systems.

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Section: Heavy Atom–free Rtp Polymersmentioning

confidence: 99%

Section: Doped Polymer Systemsmentioning

confidence: 99%

Recent progress on pure organic room temperature phosphorescent polymers

2021

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“…Since water molecules could efficiently broke-up the hydrogen bonds between G182 and PVA, the RTP intensity was effectively tuned by changing the ratio of water in G182/PVA doped film, while the fluorescence intensity kept constant, which allowed the fabrication of optical recording medium for the sensing of water. Subsequently, Pant and co-workers [203] also achieved RTP emission in the naphthoic acid derivate (G183-G184) doped PVA films through efficient intermolecular hydrogen bonds between carboxylic group and PVA. Because of the decreased nonradiative decay facilitated by hydrogen bonding network of PVA, not only strong fluorescence but also efficient green RTP emission (525 nm) with lifetime up to 55 ms from G183 and G184 doped PVA films were achieved.…”

Section: Polymer Matrixmentioning

confidence: 99%

Recent Advances on Host–Guest Material Systems toward Organic Room Temperature Phosphorescence

Yan

Peng

Yuan

et al. 2021

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The design and characterization of purely organic room‐temperature phosphorescent (RTP) materials for optoelectronic applications is currently the focus of research in the field of organic electronics. Particularly, with the merits of preparation controllability and modulation flexibility, host–guest material systems are encouraging candidates that can prepare high‐performance RTP materials. By regulating the interaction between host and guest molecules, it can effectively control the quantum efficiency, luminescent lifetime, and color of host–guest RTP materials, and even produce RTP emission with stimuli‐responsive features, holding tremendous potential in diverse applications such as encryption and anti‐counterfeiting, organic light‐emitting diodes, sensing, optical recording, etc. Here a roundup of rapid achievement in construction strategies, molecule systems, and diversity of applications of host–guest material systems is outlined. Intrinsic correlations between the molecular properties and a survey of recent significant advances in the development of host–guest RTP materials divided into three systems including rigid matrix, exciplex, and sensitization are presented. Providing an insightful understanding of host–guest RTP materials and offering a promising platform for high throughput screening of RTP systems with inherent advantages of simple material preparation, low‐cost, versatile resource, and controllably modulated properties for a wide range of applications is intended.

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“…Another way is to reduce non-radioactive processes in an excited state by suppressing the local molecular motion, either by cooling to extremely low temperatures or by applying high pressure. For this reason, most room-temperature phosphorescence materials have been studied under cryogenic conditions below the temperature of liquid nitrogen in transparent rigid matrices such as crystalline compounds or in host−guest systems [20,21] . However, such systems are impractical for use in solar-spectrum converters.…”

Section: Introductionmentioning

confidence: 99%