Precisely Regulating Photoactivated Dynamic Room Temperature Phosphorescence by Alkyl Chain‐Induced Lattice‐Softening DOI
Bolun Zhang, Lei Miao, Wenhai Song

et al.

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

Published: Oct. 14, 2024

Abstract Dynamic response room temperature phosphorescence (RTP) is a hot topic in smart materials research due to its unique RTP‐response characteristics under external stimuli. However, precisely control are currently challenging. Here, an alkyl chain‐induced lattice‐softening strategy proposed regulate photoactivated dynamic RTP (PDRTP). By adjusting the chain flexibility of hybrid metal halide matrices, oxygen permeability can be adjusted, thereby achieving finely manipulate photoactivation equilibrium time, lifetime, and wavelength resulted host–guest doped within ranges 10–600 s, 0.05‐1.62 405–595 nm, respectively. It also demonstrated potential application PDRTP afterglow sensing multi‐level information encryption. This study not only proposes effective method for regulating photosensitivity materials, but points out new direction exploring gas dense‐packed crystalline materials.

Language: Английский

Stimulus-responsive organic room temperature phosphorescence materials based on host-guest doping systems DOI
Hua Feng, Weiying Gao, Dan Li

et al.

Journal of Molecular Structure, Journal Year: 2025, Volume and Issue: 1334, P. 141897 - 141897

Published: Feb. 28, 2025

Language: Английский

Citations

1
Altering central atoms and bromination sites of phosphorescence units to control ultralong organic room temperature phosphorescence DOI
Lin Han,

Huiwen Jin,

Lijuan Bu

et al.

Dyes and Pigments, Journal Year: 2024, Volume and Issue: 227, P. 112186 - 112186

Published: May 1, 2024

Language: Английский

Citations

6
Conformation‐Controlled Double Phosphorescence Components From A Single Organic Molecule: Time‐Dependent and Excitation‐Dependent Wide‐Range Afterglow Color Change DOI Open Access

Jingjuan Bai,

Lin Han, Yiran Liu

et al.

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

Published: Oct. 23, 2024

Abstract Double phosphorescence components from a single organic molecule is rarely reported before because most molecules must follow Kasha's rule and merely emit T 1 state. We discover unique phenomenon of conformation‐controlled expression double components. The green component the red are assigned to dinaphthylamine moiety pyrene unit N,N‐di(naphthalen‐2‐yl)pyren‐1‐amine (NaPy), respectively. NaPy shows time‐dependent excitation‐dependent afterglow color change in copolymerized MMA film at room temperature due simultaneous However, PMMA MA film, just expresses component, suggesting that matrix rigidity greatly affects via altering conformation NaPy. In low‐rigidity matrix, dyanmic free rotation triplet excitons relax T1 state inner conversion or vibration relaxation, leading sole component. high‐rigidity highly twisted stabilized limitation 2 return S0 separately, resulting Thus, follows but disobeys matrix. can function relatively independently, wide‐range change.

Language: Английский

Citations

3
Through-Space Electron Effect Regulated Selective Expression of Ultralong Organic Room Temperature Phosphorescence and Photochromism DOI
Lin Han, Youshi Lan,

Xingda Zhang

et al.

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

Published: April 16, 2025

We report a through-space electron effect (TSEE) between two phosphorescent units that significantly modulates the selective expression of ultralong organic room-temperature phosphorescence (UORTP) and photochromism. A series molecules (DNapTr, DNapBNT, DNapFL, DNapPy), featuring connected by nonconjugated spacer, were synthesized. Our findings reveal both TSEE energy gap ΔE (defined as EPU2 - EPU1) lowest triplet levels (T1) play crucial roles in determining UORTP photochromic behavior PMMA films. NMR spectra molecular simulations confirm presence TSEE, with their strength ranked DNapPy < DNapFL DNapBNT TSEE. The DNap unit is governed where moderate inhibits radical cation formation, while strong promotes it. Consequently, DNapTr, exhibit tunable photochromism, whereas remains nonphotochromic. jointly influenced ΔE. For DNapTr (ΔE > 0), excitons are trapped via leading to from DNap. In slightly <0), directs PU2. ≪ enables Py. By leveraging tuning T1 PU2, we successfully modulated photochromism UORTP. This study provides strategy for designing intelligent materials.

Language: Английский

Citations

0
Precisely Regulating Photoactivated Dynamic Room Temperature Phosphorescence by Alkyl Chain‐Induced Lattice‐Softening DOI
Bolun Zhang, Lei Miao, Wenhai Song

et al.

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

Published: Oct. 14, 2024

Abstract Dynamic response room temperature phosphorescence (RTP) is a hot topic in smart materials research due to its unique RTP‐response characteristics under external stimuli. However, precisely control are currently challenging. Here, an alkyl chain‐induced lattice‐softening strategy proposed regulate photoactivated dynamic RTP (PDRTP). By adjusting the chain flexibility of hybrid metal halide matrices, oxygen permeability can be adjusted, thereby achieving finely manipulate photoactivation equilibrium time, lifetime, and wavelength resulted host–guest doped within ranges 10–600 s, 0.05‐1.62 405–595 nm, respectively. It also demonstrated potential application PDRTP afterglow sensing multi‐level information encryption. This study not only proposes effective method for regulating photosensitivity materials, but points out new direction exploring gas dense‐packed crystalline materials.

Language: Английский

Citations

1