Dyes and Pigments最新文献

{"title":"Enhanced NIR-II photoacoustic imaging performance of donor-acceptor semiconducting polymers enabled by donor conjugation extension","authors":"Qian Li ,&nbsp;Xuelong Huang ,&nbsp;Tiantian Zhou,&nbsp;Zengrong Li,&nbsp;Yongjun Deng,&nbsp;Chu Liu,&nbsp;Xinru Chen,&nbsp;Ou Zhang,&nbsp;Zirui Li,&nbsp;Yuqi Li,&nbsp;Yan Liu,&nbsp;Zhixiong Cao","doi":"10.1016/j.dyepig.2024.112628","DOIUrl":"10.1016/j.dyepig.2024.112628","url":null,"abstract":"<div><div>Polymer-based photoacoustic imaging (PAI) in the second near-infrared window (NIR-II, 1000–1700 nm) has gained significant attention due to its unique advantages. However, the development of high-performance polymer contrast agents for NIR-II PAI still falls short of clinical needs, largely owing to a limited understanding of structure-property relationships. This study introduces a series of donor-acceptor (D-A) polymers PT-ATQ, PTT-ATQ, and PDTT-ATQ designed with progressively longer conjugated donor (D) units: thiophene (T), thieno[3,2-<em>b</em>]thiophene (TT), and dithieno[3,2-<em>b</em>:2′,3′-<em>d</em>]thiophene (DTT), aiming to understand the effects of conjugation extension in the D unit on PAI performance. Density functional theory (DFT) calculations showed that increasing the conjugation length enhances electron delocalization along the polymer backbone, boosting the conjugation effect and improving molecular coplanarity. Spectroscopic studies confirmed that this extension of conjugation and enhanced coplanarity significantly raised the absorption coefficient of the water-soluble nanoparticles PDTT-ATQ@NPs. Further results indicated that PDTT-ATQ@NPs not only exhibited excellent biocompatibility but also deliver superior <em>in vitro</em> PAI performance when irradiated with a 1064 nm pulsed laser. <em>In vivo</em> experiments in mice demonstrated a substantial increase in photoacoustic signal intensity, particularly in the ear (138.7-fold) and brain vasculature (64.8-fold), enabling the clear visualization of ear microvessels at 50 μm and brain microvessels at 100 μm. This research highlights the importance of conjugation length in the D unit for enhancing the PAI performance of D-A polymer contrast agents, offering crucial insights into the molecular design for future advancements in this field.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"235 ","pages":"Article 112628"},"PeriodicalIF":4.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143134939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Highly stable and safe biocompatible black tattoo ink based on Pluronic polymer-coated carbon black nanoparticles","authors":"Hyeryeon Oh ,&nbsp;Jin Sil Lee ,&nbsp;Panmo Son ,&nbsp;Hyeonyeol Ryu ,&nbsp;On Beol Kim ,&nbsp;Won Il Choi","doi":"10.1016/j.dyepig.2024.112627","DOIUrl":"10.1016/j.dyepig.2024.112627","url":null,"abstract":"<div><div>The tattoo industry has evolved in recent decades with the increasing prevalence of tattooing. However, the development of ink components, specifically pigments with adequate stability and biocompatibility under physiological conditions remains challenging. In this study, to develop safer pigments for tattoo inks, carbon black (CB) was stabilized with different types of Pluronic polymers and characterized <em>in vitro</em> and <em>in vivo</em>. The effects of the polymer templates on the preparation, morphology, and properties of Pluronic-coated carbon black nanoparticles (CB/Plu NPs) were investigated and optimized using various analytical techniques. In particular, CB/Plu NPs with PF127 at a weight ratio of 1:5 exhibited a high coating yield and dispersion stability. CB/Plu NPs with PF127 possessed spherical morphology with uniform sizes of 158 nm and did not cause cytotoxic effects, cellular morphological changes, or oxidative stress <em>in vitro</em>. Intradermally injected CB/Plu NPs maintained an intense black color for 16 weeks without histological changes in the isolated dorsal skin of a rat. These results suggest that aqueous dispersions of CB/Plu NPs can potentially be used as a highly stable and safe black tattoo ink.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"235 ","pages":"Article 112627"},"PeriodicalIF":4.1,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143135034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Large-area imaging screen with ultrahigh resolution achieved by pure organic scintillator","authors":"Haoqiang Xu,&nbsp;Wenjing Zhao,&nbsp;Junqing Shi,&nbsp;Lei Ji","doi":"10.1016/j.dyepig.2024.112625","DOIUrl":"10.1016/j.dyepig.2024.112625","url":null,"abstract":"<div><div>Designing high-performance organic scintillators has drawn massive attention for taking advantages of organic frameworks in practical applications. Obtaining large-area scintillating screens efficiently is in high demand for developing organic scintillators. Herein, we developed two pure organic scintillating materials bearing heavy halogen atoms using a simple one-step method. Excitingly, <strong>ICzTPN</strong>-based scintillating imaging screen has achieved various advantages against the other organic counterparts, i.e., radioluminescence in lower-energy region (reddish-orange color emission, 600 nm), large size (15 cm × 15 cm), high light yield (19094 photons MeV⁻¹), and ultrahigh resolution (28.3 lp/mm). This work offers an efficient design and preparation of pure organic scintillating materials, providing large-area screen with performance ranking at the top level among the reported organic scintillating imaging screens.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"235 ","pages":"Article 112625"},"PeriodicalIF":4.1,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143134938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of anchoring group of dispersants on the dispersion performance of Pigment Red 122","authors":"Hao Zeng ,&nbsp;Xin Fan ,&nbsp;Xiaojun He ,&nbsp;Zhenlin Jiang ,&nbsp;Lin Niu ,&nbsp;Haikuan Yuan","doi":"10.1016/j.dyepig.2024.112614","DOIUrl":"10.1016/j.dyepig.2024.112614","url":null,"abstract":"<div><div>Polymer dispersants are widely used for the dispersing of organic pigments, and the stability of the pigment suspension significantly influences the practical application. The anchoring groups in polymer dispersants adsorb on the pigment surfaces, which is the key factor on the dispersion and the stability of pigment suspension. In this study, the dispersants with different anchoring groups were synthesized by solution polymerization to investigate the effect of the anchoring groups on the dispersion of Pigment Red 122. The results demonstrated that the dispersants with the pyridine group as the anchoring group exhibited better dispersion stability, compared to those with a phenyl ring, an aminic function, and an alkyl chain as the anchoring groups. In addition, molecular dynamics (MD) simulation was used to reveal the interaction energy between polymer dispersants and Pigment Red 122. The MD simulation results indicated that the interaction energy of the dispersant with a pyridine anchoring group was the maximum at approximately −368.70 kcal/mol, which was consistent with the experiment results.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"235 ","pages":"Article 112614"},"PeriodicalIF":4.1,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143134933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Benzo[f]indazoles: A new class of glow dyes for the generation of versatile fluorophores","authors":"Edurne Avellanal-Zaballa ,&nbsp;Liher Prieto ,&nbsp;Natalia Casado ,&nbsp;Uxue Uria ,&nbsp;Efraím Reyes ,&nbsp;Jorge Bañuelos","doi":"10.1016/j.dyepig.2024.112624","DOIUrl":"10.1016/j.dyepig.2024.112624","url":null,"abstract":"<div><div>The surge of photonics as key enabling technology for lighting has driven the search of new chart of modern applied fluorophores. In this line, we recently found that a set of compounds previously synthesized by us and pertaining to the family of benzo[<em>f</em>]indazoles, were able to absorb light and convert it into glow blue fluorescence. Prompted by these findings, we came interested in exploring their viability as versatile fluorophores for bioimaging. To this aim, in this work we present a comprehensive study of the electronic, structural, electrochemical and photophysical properties of this new library of dyes in solution and solid-state under mild and hard irradiation regimes. We intend to understand the molecular structure-photophysics relationship and estimate the strengths and weaknesses of these dyes as potential fluorescent probes for bioimaging or other kind of light-driven applications. One of the main outcome of this study is that the photonic performance of the herein reported benzo[<em>f</em>]indazole-based dyes surpasses coumarines, considering as benchmark in the same spectral window, yielding brighter and long lasting emission even under intense and prolonged illumination.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"235 ","pages":"Article 112624"},"PeriodicalIF":4.1,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143134942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"N,O-boron spirocyclic complexes: How electronic and spatial factors modulate photophysical and physicochemical properties","authors":"Maxim V. Motverov ,&nbsp;Kseniya I. Lugovik ,&nbsp;Galina V. Vataru ,&nbsp;Artem S. Minin ,&nbsp;Enrico Benassi ,&nbsp;Nataliya P. Belskaya","doi":"10.1016/j.dyepig.2024.112622","DOIUrl":"10.1016/j.dyepig.2024.112622","url":null,"abstract":"<div><div>This study presents the synthesis of new spirocyclic boron-coordinated (SBCs) fluorophores based on a simple and facile procedure and their optical properties. The structure of the complexes was confirmed by ¹H, ¹³C, ¹¹B NMR spectra, high resolution mass spectra and single crystal X-ray diffraction data. The effect of the substituents in the terminal aromatic cycles and the spirocycle size on the photophysical properties was investigated by a combined experimental and computational approach. The absorption and fluorescence emission properties of the SBCs were investigated and the results obtained revealed evident relationships between the electronic nature of the substituents and their photophysical properties. These differences clearly divide the spirocomplexes into two groups with significant differences in absorption and emission properties. SBCs with an electron acceptor substituent in cycle A and an electron donor substituent in cycle B have an emission maximum in the shorter wavelength region (416–451 nm) and a quantum yield of 2.3–12.5 %. In another group of compounds with the opposite set of substituents in cycles A and B, the emission maximum is located at 469–560 nm, the quantum yield is much lower (0.1–0.4 %), but the Stokes shift (8114-8160 cm⁻¹) increases significantly. These differences were explained using state-of-the-art quantum chemical calculations, which show that SBCs differ in the values of the electronic charges transferred in ESs (<em>S</em>_1v and <em>S</em>_1r) and their localisation, and have different conjugated systems. SBCs exhibited increased quantum yield with increasing medium viscosity, under mycelial formation conditions, and significant aggregation-enhanced emission behaviour in THF-H₂O and DMSO-H₂O mixtures, along with excellent solid-state photophysical properties. Cellular uptake and cytotoxicity studies using <em>Vero</em> cells showed that SBCs are biocompatible and selectively accumulate in cell lipid droplets, endoplasmic reticulum, Golgi apparatus and mitochondria.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"235 ","pages":"Article 112622"},"PeriodicalIF":4.1,"publicationDate":"2024-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143134936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dopant-free hole transport materials for perovskite solar cells: Isoindigo and dibenzonaphthyridine derivatives","authors":"Yajie Fu ,&nbsp;Chunguang Li ,&nbsp;Yun Zhao ,&nbsp;Derong Cao","doi":"10.1016/j.dyepig.2024.112617","DOIUrl":"10.1016/j.dyepig.2024.112617","url":null,"abstract":"<div><div>Three isomeric D−A−D-type dopant-free hole transport materials (HTMs), <strong>IID-TPA</strong>, <strong><em>OO</em>-DBND-TPA</strong>, and <strong><em>NO</em>-DBND-TPA</strong>, based on isoindigo (IID) and dibenzo[<em>c,h</em>][2,6]naphthyridine (DBND) derivatives were designed, synthesized, and applied in perovskite solar cells (PSCs). We systematically investigated the isomerization effects on physicochemical, electrochemical, and photovoltaic properties. It was found that <strong><em>OO</em>-DBND-TPA</strong> with two alkoxy groups as the side chains and DBND as the core receptor exhibited more suitable energy levels, higher hole mobility and better uniform film-forming morphology, as well as more efficient hole transfer at the perovskite/HTM interfaces. The PSC based on <strong><em>OO</em>-DBND-TPA</strong> afforded a PCE of 17.44 % without any dopants, which was comparable to the doped spiro-OMeTAD based standard device (19.66 %). Moreover, the unencapsulated PSCs fabricated with <strong><em>OO</em>-DBND-TPA</strong> exhibited much improved stability compared to that of doped spiro-OMeTAD. The results show that the isomerization of core receptors and alkyl chains might be applied to optimize the photoelectric properties of the HTMs.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"235 ","pages":"Article 112617"},"PeriodicalIF":4.1,"publicationDate":"2024-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143134941","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High efficiency and low roll-off white phosphorescent organic light-emitting diodes by employing various acceptor ratio in exciplex-forming co-host","authors":"Jie Hua ,&nbsp;Lijun Qi ,&nbsp;Zeyuan Cheng ,&nbsp;Zhuolin Zhan ,&nbsp;Yuan Chai ,&nbsp;He Dong ,&nbsp;Jin Wang","doi":"10.1016/j.dyepig.2024.112621","DOIUrl":"10.1016/j.dyepig.2024.112621","url":null,"abstract":"<div><div>The exciplex-forming co-host system has demonstrated significant potential in the development of high-efficiency white organic light-emitting diodes (WOLEDs). However, there have been limited investigations into the electroluminescence (EL) performance of WOLEDs utilizing exciplex-forming co-hosts with varying electron donor/electron acceptor mixing ratios. In this work, we fabricated two complementary-color WOLEDs by employing PO-01-TB doped in the mCP:PO-T2T exciplex-forming co-host and FIrpic doped mCP host as the orange and the blue emission layers, respectively. The effects of various mixing ratios of mCP:PO-T2T on device performance were explored. It was observed that decreasing the PO-T2T content resulted in a blue shift in the emission peak, indicating an increase in the energy of the mCP:PO-T2T exciplex. The enhancement facilitates the energy transfer to the blue phosphor FIrpic, thereby improving the exciton utilization and reducing efficiency roll-off at high luminance. By optimizing the device structure, the all-phosphorescent warm WOLED using mCP:PO-T2T (2:1) exciplex host was achieved with a maximum EQE of 21.1 %, which remained 20.6 % at 100 cd/m² and 18.4 % at 1000 cd/m², demonstrating high EQE and low efficiency roll-off.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"235 ","pages":"Article 112621"},"PeriodicalIF":4.1,"publicationDate":"2024-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143135403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Uncovering the underlying electromagnetic mechanism of lead-free all-perovskite tandem solar cells with ZnO moth-eye antireflection layers","authors":"Kyeong-Ho Seo ,&nbsp;Swarup Biswas ,&nbsp;Yongju Lee ,&nbsp;Philippe Lang ,&nbsp;Dohyeon Gil ,&nbsp;Minsu Choi ,&nbsp;Jin-Hyuk Bae ,&nbsp;Hyeok Kim","doi":"10.1016/j.dyepig.2024.112619","DOIUrl":"10.1016/j.dyepig.2024.112619","url":null,"abstract":"<div><div>As the push to enhance power conversion efficiency (PCE) in solar cells intensifies, tandem configurations that integrate photovoltaic devices with complementary bandgaps have become essential. Perovskite materials are particularly advantageous in these tandem solar cells due to their adjustable bandgaps (ranging from 1.2 to 2.2 eV), superior light absorption, remarkable structural stability, and efficient charge-carrier mobility. Lead-free perovskites offer the benefits of traditional perovskites while also being nontoxic and stable; thus, they are ideal candidates for tandem solar cells. However, the optical loss associated with light reflection from the upper surface of the cell degrades device performance, thus reducing the PCE of solar cells; therefore, continuous research efforts are needed to address this drawback. In this study, we coated a lead-free all-perovskite tandem solar cell with a parabolic zinc oxide (ZnO) moth-eye antireflection (AR) layer and assessed its efficiency in suppressing reflection using the two-dimensional finite-difference time-domain method. We analyzed the maximum short-circuit current density (J_sc,max) of the lead-free all-perovskite tandem solar cell by varying the height (H) of the ZnO moth-eye AR layer. Notably, for H = 300 nm, J_sc,max was about 30.5 mA/cm², which indicated that 300 nm was the optimal height for performance improvement. Moreover, we generated a profile for the light-trapping phenomenon that occurs within an actual cell by simulating the electromagnetic mechanism governing the generation rate and proportion of absorbed photons. This profile enabled us to characterize the light-trapping phenomenon within the tandem solar cell induced by the ZnO moth-eye AR layer.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"235 ","pages":"Article 112619"},"PeriodicalIF":4.1,"publicationDate":"2024-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143135401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rational design and characterization of efficient deep-red iridium(III) complexes with 2-(benzothienyl)pyridine and tetraphenylimidodiphosphinate ligands","authors":"Xiao-Chong Ma,&nbsp;Dao-Wei Li,&nbsp;Zheng-Rong Mo,&nbsp;Zhi-Gang Niu,&nbsp;Gao-Nan Li","doi":"10.1016/j.dyepig.2024.112620","DOIUrl":"10.1016/j.dyepig.2024.112620","url":null,"abstract":"<div><div>Herein, a new series of deep-red phosphorescent cyclometalated iridium(III) complexes (<strong>Ir</strong>-<strong>1</strong>∼<strong>Ir</strong>-<strong>3</strong>) with 2-(benzothienyl)pyridine derivatives (R-btp) as cyclometalated ligands and tetraphenylimidodiphosphinate (tpip) as ancillary ligands were synthesized and fully characterized. The crystal structures of three complexes were determined by X-ray analysis, displaying multiple π … π and C–H … π interactions. Their structures and photophysical properties were systematically investigated with experimental and theoretical methods. The results reveal complex <strong>Ir</strong>-<strong>3</strong> functionalized with the CF₃ groups exhibits a remarkable red-shifted and a higher quantum yield compared to fluorinated complexes <strong>Ir</strong>-<strong>1</strong> and <strong>Ir</strong>-<strong>2</strong>. As expected, the deep-red organic light-emitting diodes (OLEDs) device <strong>D</strong>-<strong>3</strong> using <strong>Ir</strong>-<strong>3</strong> as the emitting layer achieves the best electroluminescent performance with a promising maximum external quantum efficiency (<em>EQE</em>_<em>max</em>) of 11.3 %, accompanied by CIE coordinates of (0.67, 0.33) and narrow full width at half maximum (FWHM) of 41 nm. It is anticipated that this research could provide a rational design strategy for pure deep-red-emitting phosphorescent iridium complexes in the fabrication of high-efficiency OLEDs.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"235 ","pages":"Article 112620"},"PeriodicalIF":4.1,"publicationDate":"2024-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143135408","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}