Polymer films doped with dimethylaminostyryl β-diketonates of boron difluoride: Spectral properties and influence of the polymer matrix

Федоренко, Е. В.; Khrebtov, Aleksandr A.; Мирочник, А. Г.; Ishtokina, Ekaterina Yu.; Reutov, V. A.; Lim, L. A.

doi:10.1016/j.jlumin.2021.118043

Cited by 10 publications

(7 citation statements)

References 37 publications

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“…1): excitation through cascade energy transfer through the chain of luminophores 1-3-4 (transition S 0 → S 1 -524 nm) and excitation directly by UV radiation (transition S 0 → S 2 -370 nm). For dye 5 in the PS matrix (Table 1), in addition to the monomeric fluorescence (631 nm), the presence of brightly luminescent aggregates (656 nm) [22] is also observed.…”

Section: Resultsmentioning

confidence: 97%

“…In the luminescence spectrum of dye 4 in the PS matrix (Fig. 1), a short-wave shoulder (580 nm) corresponding to monomeric luminescence and a longwave maximum (604 nm) corresponding to luminescence of aggregates, whose formation is typical at high concentrations of luminophore in the polymer [22] are observed. In addition, dye 4 in the PS matrix, as in the solutions, is characterized by the presence of two luminescent transitions: an intense band in the red-orange area (transition S 1 → S 0 ) and short-wave luminescence in the blue area (transition S 2 → S 0 ) [20].…”

Section: Resultsmentioning

confidence: 99%

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White emission of polymeric luminescent compositions doped with boron chelates

Yu.

Khrebtov

Федоренко

et al. 2022

Optics and Spectroscopy

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Multicomponent polymeric luminescent compositions doped with β-diketonates of boron difluoride were obtained, which can be used to produce white light by cascade radiative energy transfer. The white light is obtained by using the RGB model. The compositions containing four luminophores showed high color rendering values (color rendering index >80, 2776 K). Two luminescent transitions were realized in the obtained compositions for the red dye (R): S1-> S0, associated with cascade radiative energy transfer along the chain of luminophores, and S2-> S1->S0, directly excited by UV radiation. The luminous characteristics of the obtained compositions indicate the possibility of using polymeric luminescent compositions doped with β-diketonate boron difluoride in emergency and indoor lighting devices. Keywords: β-diketonates of boron difluoride, luminescence, polymer compositions, energy transfer, white light, illumination.

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Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 99%

White emission of polymeric luminescent compositions doped with boron chelates

Yu.

Khrebtov

Федоренко

et al. 2022

Optics and Spectroscopy

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“…498/532 98500 1300 65 DCM [À À ], Suhasini et al [30] 430/527 -4300 49 DMF [À À ], Haucke et al [34] 366/397 40700 2100 39 Toluene [20], Yang et al [32] 379/468 18000 5000 77 CyH [3], Tigreros et al [35] 502/570 129000 2400 61 DCM [1], Chaicham et al [33] 353/479 5100 7500 44 DCM [10], Castillo et al [36] 449/531 87100 3300 85 CHCl 3 [10], Tigreros et al [12] 347/477 17700 7900 69 THF [20], This work 386/454 40700 3900 93 DMSO [20], Wang et al [26] [a] If no information is reported by the authors in the respective work, we assume that such dyes are obtained starting from commercial substrates. distribution throughout the molecule due to the high πconjugation in this compound (Figure 2a).…”

Section: Computational Calculationmentioning

confidence: 99%

Pyrazolo[1,5‐a]pyrimidine‐Dioxaborinine Hybrid Dyes: Synthesis and Substituent Effect in the Photophysical Properties

et al. 2023

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A novel family of pyrazolo [1,5-a]pyrimidine-dioxaborinine (PP-DB) hybrid dyes was synthesized by the direct construction of the dioxaborinine (DB) fragment on the pyrazolo[1,5a]pyrimidine (PP) ring, which implies the formation of four new bonds in a one-pot manner. The dyes' optical properties were investigated and compared with the starting pyrazolo[1,5a]pyrimidines; a study evidencing large fluorescence quantum yields in products (φ f up to 69 %) due to an intramolecular charge transfer (ICT) process from the PP core to a ring of DB (PP!DB) that is absent in precursors (φ f = 0.03-0.30). Timedependent density functional theory (TD-DFT) calculations confirmed the fluorescence process involved in the novel dyes, where their ICT limits the non-radiative process due to the restricted rotation in the DÀ A system. The present work provides insight into how phenyl and DB ring incorporation impact the optical properties of this new group of hybrids dyes based on PP-DB.

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“…Максимумы возбуждения люминесценции и люминесценции 1, 2 и 3 в ПС соответствуют полосам красителей в растворах [18,19,21] (604 nm), соответствующий люминесценции агрегатов, формирование которых характерно при высоких концентрациях люминофора в полимере [22]. Кроме того, для красителя 4 в матрице ПС, как и в растворах, характерно наличие двух люминесцентных переходов: интенсивной полосы в красно-оранжевой области (переход S 1 → S 0 ) и коротковолновой люминесценции в синей области (переход S 2 → S 0 ) [20].…”

Section: результаты и обсуждениеunclassified

“…Для красителя 5 в ПСматрице (табл. 1) помимо мономерной флуоресценции (631 nm) также наблюдается наличие ярко люминесцирующих агрегатов (656 nm) [22].…”

Section: результаты и обсуждениеunclassified

Белое Излучение Полимерных Люминесцентных Композиций, Допированных Хелатами Бора

Иштокина,

Хребтов,

Федоренко

et al. 2022

Оптика И Спектроскопия

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Получены многокомпонентные полимерные люминесцентные композиции, допированные β-дикетонатами дифторида бора, которые могут быть использованы для получения белого света за счет каскадного излучательного переноса энергии. Белый свет получен с использования модели RGB. Композиции, содержащие четыре люминофора, продемонстрировали высокие значения показателей цветопередачи (индекс цветопередачи >80, 2776 K). В полученных композициях для красного красителя (R) реализовывались два люминесцентных перехода: S1-> S0, связанный с каскадным излучательным переносом энергии по цепочке люминофоров, и S2-> S1-> S0, возбуждаемый непосредственно УФ излучением. Световые характеристики полученных композиций указывают на возможность использования полимерных люминесцентных композиций, допированных β-дикетонатами дифторида бора, в устройствах аварийного и внутреннего освещения. Ключевые слова: β-дикетонаты дифторида бора, люминесценция, полимерные композиции, перенос энергии, белый свет, освещение.

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Polymer films doped with dimethylaminostyryl β-diketonates of boron difluoride: Spectral properties and influence of the polymer matrix

Cited by 10 publications

References 37 publications

White emission of polymeric luminescent compositions doped with boron chelates

White emission of polymeric luminescent compositions doped with boron chelates

Pyrazolo[1,5‐a]pyrimidine‐Dioxaborinine Hybrid Dyes: Synthesis and Substituent Effect in the Photophysical Properties

Белое Излучение Полимерных Люминесцентных Композиций, Допированных Хелатами Бора

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