Carbazole Analog Doping‐Induced Bright Red and Near‐Infrared Organic Room‐Temperature Phosphorescence with Long Lifetime DOI
Xianhe Zhang, Zongliang Xie, Bin Liu

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 15, 2024

Abstract Materials with room‐temperature phosphorescence (RTP) from deep red to near‐infrared (NIR) region exhibit great potential for emerging applications. However, such molecules typically require a low‐lying first triplet (T 1 ) excited state, which may not be optimal exciton stabilization, potentially compromising the lifetime. This study reports design of four 9 H ‐carbazole (Cz) analogs extended conjugation lengths used as dopants achieve RTP emissions in and NIR regions lifetimes exceeding 700 ms. These findings reveal that substituting reactive hydrogen atoms Cz methyl groups significantly enhances photoluminescence quantum yield (PLQY) these materials compared their non‐methylated counterparts. Additionally, doping systems can activated by visible light, achieving persistent even under excitation 450 nm light. Theoretical calculations demonstrate crucial roles charge transfer state enhanced spin‐orbital coupling (SOC) matrix elements upon long‐lifetime beyond 600 nm. research presents strategy employing Cz‐based facilitate extending regions.

Language: Английский

Excellent Persistent Near‐Infrared Room Temperature Phosphorescence from Highly Efficient Host–Guest Systems DOI Creative Commons

Shu-Hui Li,

Juqing Gu,

Jiaqiang Wang

et al.

Advanced Science, Journal Year: 2024, Volume and Issue: 11(28)

Published: May 17, 2024

Abstract Organic near‐infrared (NIR) room temperature phosphorescence (RTP) materials become a hot topic in bioimaging and biosensing for the large penetration depth high signal‐to‐background ratio (SBR). However, it is challenging to achieve persistent NIR severe nonradiative transitions by energy‐gap law. Herein, universal system with RTP built visible (host) (guest) materials, which can efficiently suppress rigid environment of crystalline host good matching, further promote emission additional resonance energy transfer (≈100%) between them. The ten‐folds enhancement lifetimes, compared those guest luminogens, be achieved modulation aggregated structures host–guest systems. This work provides convenient way largely prolong lifetimes various promoting their application afterglow imaging deeper higher SBRs.

Language: Английский

Citations

16
Cascade energy transfer endows phosphorescent carbon dots-based films with tunable and broadband afterglow for fingerprint recognition and anticounterfeiting DOI

Zhanpeng Liu,

Xinyi Ding, Lin Cai

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160311 - 160311

Published: Feb. 1, 2025

Language: Английский

Citations

1
Excitation Wavelength-Dependent Room Temperature Phosphorescence Based on Dual Confinements of Organic-Inorganic Matrix for Dynamic Information Encryption DOI
Xianglong Zhao, Shijin Shuai, Runze Wang

et al.

Dalton Transactions, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

CDs-LDHs-PVA composite achieves RTP with 205.24 ms lifetime and 5.04% quantum yield, showing excitation-dependent emission for optical anti-counterfeiting encryption.

Language: Английский

Citations

1
Multistimuli-Responsive Room-Temperature Phosphorescence: Adjustable Electrostatic Interactions and the Corresponding Accurate Molecular Packing DOI

Guigui Ye,

Yujie Yang, Wentao Yuan

et al.

ACS Materials Letters, Journal Year: 2024, Volume and Issue: unknown, P. 4639 - 4648

Published: Sept. 6, 2024

Language: Английский

Citations

8
Achieving Near‐Infrared Phosphorescence Supramolecular Hydrogel Based on Amphiphilic Bromonaphthalimide Pyridinium Hierarchical Assembly DOI Open Access
Q. Wang Song, Zhenliang Liu, Jinwei Li

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 26, 2024

Abstract Phosphorescent supramolecular hydrogels are currently a prevalent topic for their great promise in various photonic applications. Herein, an efficient near‐infrared (NIR) phosphorescence hydrogel is reported via the hierarchical assembly strategy aqueous solution, which fabricated from amphiphilic bromonaphthalimide pyridinium derivative (G), exfoliated Laponite (LP) nanosheets, and polymeric polyacrylamide (PAAm). Initially, G spontaneously self‐aggregates into spherical nanoparticles covered with positively charged units emits single fluorescence at 410 nm. Driven by electrostatic interactions negatively subsequently function as cross‐linked binders coassemble LP engendered red room‐temperature (RTP) up to 620 Benefiting hydrogen‐bonding interactions‐mediated physical cross‐linkage, further introduction of PAAm not only significantly elevates mechanical strength showing fast self‐healing capability, but also increases lifetime 2.49 4.20 ms, especially generating even higher temperature ( τ 363 K = 2.46 ms). Additionally, RTP energy transfer occurs after doping small amount organic dye heptamethine cyanine (IR780) acceptor hydrogels, resulting long‐lived NIR emission 823 nm high donor/acceptor ratio, successfully applied cell labeling window.

Language: Английский

Citations

4
How Intermolecular Interaction and Hydrostatic Pressure Affect the Organic Room Temperature Phosphorescence Properties: A QM/MM Study DOI
Yuanyuan Xu, Huanling Liu, Kunwei Pang

et al.

Chinese Journal of Physics, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Language: Английский

Citations

0
Near‐Infrared Organic Ultralong Room‐Temperature Phosphorescence Materials Constructed via Multiple Phosphorescence Resonance Energy Transfer DOI Open Access

Longyue Yu,

Ning Feng, Wenwen Fu

et al.

Advanced Optical Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 30, 2025

Abstract Organic ultralong room‐temperature phosphorescence (OURTP) materials with white and near‐infrared (NIR) emission have unparalleled advantages in information encryption, bio‐imaging, science. However, limited by the energy gap law, NIR OURTP (exceeding 700 nm) are very rare, furthermore, these typically exhibit brief lifetimes. Therefore, there is an urgent need to find methods achieve afterglow lifetimes from organic chromophores. Here, a universal strategy has been proposed endow polymeric wide color, lifetimes, persistent based on multiple sequential resonance transfer (P‐FRET). The poly(acrylamide‐co‐N‐vinylcarbazole) (PAMCz) blue‐emission act as donor while traditional highly fluorescent dyes (BODIPY derivatives, rhodamine b (RhB) sulfo‐cyanine5 (Cy5)) green/red/NIR fluorescence acceptor. Significantly, multi‐pathway P‐FRET shows distinct over single‐path PRET, including higher antennae effect (AE), broader spectrum of color‐tunability facilitated intermediary acceptor, improved intensity terminal By simply regulating doping composition concentration acceptors, perfect white‐emission CIE coordinate (0.336, 0.330) NIR‐emission 2.7 s successfully realized.

Language: Английский

Citations

0
Polylactic Acid (PLA)-Based Persistent Room-Temperature Phosphorescence Polymer Nanoparticles for Bioimaging DOI
Kaimin Zhang,

Danman Guo,

Tianyi Tang

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 26, 2025

Recent advancements have focused on developing nanoscale persistent room-temperature phosphorescence (pRTP) structures to expand their applicability in biomedical fields. Traditional fabrication methods typically produce surface-coated core-shell pRTP nanoparticles composed of nonbiocompatible emitters at very high concentrations the core. To overcome this limitation, polymeric nanosystems been presented study as a promising alternative by embedding RTP molecules within biocompatible polymer matrix, thereby significantly reducing required concentration molecules. These were fabricated using poly(lactic acid) (PLA) matrix an effective microemulsion-based method. They exhibited similar properties traditional nanoparticles, showing comparable long-lasting with lifetime 118 ms even when phosphorescent molecule content is below 2%. Moreover, excellent biocompatibility and stability demonstrate interesting reversible photoactivated properties. successfully applied for vivo imaging signal-to-noise ratio (SBR) 2061, maintaining strong long-lived emissions 20 min. results highlight viable approach advancing technology biological applications.

Language: Английский

Citations

0
Efficient energy phosphorescence transfer and reversible phosphorescence in aromatic heterocyclic doped systems for advanced information storage DOI
Yuyi Li,

Shu Han,

He Zhao

et al.

Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy, Journal Year: 2025, Volume and Issue: unknown, P. 126053 - 126053

Published: March 1, 2025

Language: Английский

Citations

0
Near‐Infrared Organic Room Temperature Phosphorescent Probes Targeting Fibroblast Activation Protein for Surgical Navigation of Liver Cancer DOI Creative Commons
Jinghua Li,

Juqing Gu,

Liangxuan Ding

et al.

Aggregate, Journal Year: 2025, Volume and Issue: unknown

Published: April 6, 2025

ABSTRACT Hepatectomy is a critical treatment for liver cancer, but achieving complete tumor removal remains challenging. The development of tumor‐targeting probes capable accurately identifying locations and providing real‐time intraoperative navigation significant clinical importance. We synthesize tumor‐targeted probe by conjugating fibroblast activation protein inhibitor (FAPI) with near‐infrared organic room temperature phosphorescence (RTP) material. then analyze its surgical performance in the cancer model imaging fresh patient‐derived samples. In vivo validation reveals that exhibits optimal intensity within 48 h (8.53 × 10 5 p s −1 cm −2 sr ) an average signal‐to‐noise ratio 16. could effectively identify FAP‐positive samples from patients. successful application phosphorescence‐guided surgery suggests RTP holds translational value serve as auxiliary tool cancer.

Language: Английский

Citations

0