Au36(SR)22 Nanocluster and a Periodic Pattern from Six to Fourteen Free Electrons in Core Size Evolution DOI Creative Commons
Yitong Wang, Christopher G. Gianopoulos, Zhongyu Liu

et al.

JACS Au, Journal Year: 2024, Volume and Issue: 4(5), P. 1928 - 1934

Published: April 16, 2024

An Au36(S-tBu)22 nanocluster (NC) is synthesized using the bulky tert-butyl thiol as ligand. Single-crystal X-ray crystallography reveals that it has an Au25 core which evolves from Au22 in previously reported Au30(S-tBu)18, and protected by longer staple-like surface motifs. The new Au36 NC extends members of face-centered cubic structural evolution adding Au3 triangle Au4 tetrahedron unit. Additionally, found emits near-infrared photoluminescence at 863 nm with a quantum yield (QY) 4.3%, five times larger than Au30(S-tBu)18─the closest neighbor pattern. higher QY attributed to radiative relaxation (kr), resulting effect. Finally, we find staple motifs lead enhanced stability relative Au30(S-tBu)18.

Language: Английский

Noncovalent Interaction Guided Precise Photoluminescence Regulation of Gold Nanoclusters in Both Isolate Species and Aggregate States DOI

Xiaoxi Luo,

Jie Kong, Hang Xiao

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(27)

Published: April 23, 2024

Designing luminophores bright in both isolate species and aggregate states is of great importance many emerging cutting-edge applications. However, the conventional either emit but quench state or darken species. Here we demonstrate that precise regulation noncovalent interactions can realize states. It firstly discovered intra-cluster interaction enhances emission atomically Au

Language: Английский

Citations

14

Interplay of kernel shape and surface structure for NIR luminescence in atomically precise gold nanorods DOI Creative Commons
Xian‐Kai Wan, Xu-Shuang Han, Zong‐Jie Guan

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Aug. 22, 2024

It is challenging to attain strong near-infrared (NIR) emissive gold nanoclusters. Here we show a rod-shaped cluster with the composition of [Au28(p-MBT)14(Hdppa)3](SO3CF3)2 (1 for short, Hdppa N,N-bis(diphenylphosphino)amine, p-MBT 4-methylbenzenethiolate) has been synthesized. Single crystal X-ray structural analysis reveals that it rod-like face-centered cubic (fcc) Au22 kernel built from two interpenetrating bicapped cuboctahedral Au15 units. 1 features NIR luminescence an emission maximum at 920 nm, and photoluminescence quantum yield (PLQY) 12%, which 30-fold [Au21(m-MBT)12(Hdppa)2]SO3CF3 (2, m-MBT 3-methylbenzenethiolate) similar 60-fold Au30S(S‑t‑Bu)18 structure. time-dependent DFT(TDDFT)calculations reveal associated kernel. The small Stokes shift indicates very excited state distortion, leading high radiative decay rate (kr) probability. mixture phosphorescence thermally activated delayed fluorescence(TADF), enhancement mainly due promotion kr rather than inhibition knr. This work demonstrates metal surface structure are both important cluster-based materials. Gold nanoclusters emissions in attain. Here, authors nanoclusters, shape kernal rigid increase emissions.

Language: Английский

Citations

12

A probe for NIR-II imaging and multimodal analysis of early Alzheimer’s disease by targeting CTGF DOI Creative Commons
Lu Cao, Cong Meng, Yuying Li

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: June 12, 2024

Abstract To date, earlier diagnosis of Alzheimer’s disease (AD) is still challenging. Recent studies revealed the elevated expression connective tissue growth factor (CTGF) in AD brain an upstream regulator amyloid-beta (Aβ) plaque, thus CTGF could be diagnostic biomarker than Aβ plaque. Herein, we develop a peptide-coated gold nanocluster that specifically targets with high affinity (KD ~ 21.9 nM). The probe can well penetrate blood-brain-barrier (BBB) APP/PS1 transgenic mice at early-stage (earlier 3-month-old) vivo, allowing non-invasive NIR-II imaging when there no appearance plaque deposition. Notably, this also applied to measuring on postmortem sections by multimodal analysis, including fluorescence imaging, peroxidase-like chromogenic and ICP-MS quantitation, which enables distinguishment between brains patients healthy people. This possesses great potential for precise before formation.

Language: Английский

Citations

11

Bright near-infrared emission from the Au39(SR)29 nanocluster DOI Creative Commons
Zhongyu Liu, Lianshun Luo, Jie Kong

et al.

Nanoscale, Journal Year: 2024, Volume and Issue: 16(15), P. 7419 - 7426

Published: Jan. 1, 2024

The synthesis of atomically precise gold nanoclusters with high photoluminescence quantum yield (PLQY) in the near-infrared (NIR) region and understanding their mechanism are crucial for both fundamental science practical applications. Herein, we report a highly luminescent, molecularly pure Au

Language: Английский

Citations

10

Atomically Precise Chiral Metal Nanoclusters for Circularly Polarized Light Detection DOI

Wei‐Miao He,

Jiajia Zha, Zhan Zhou

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(34)

Published: May 28, 2024

Circularly polarized light (CPL) detection is of great significance in various applications such as drug identification, sensing and imaging. Atomically precise chiral metal nanoclusters with intense circular dichroism (CD) signals are promising candidates for CPL detection, which can further facilitate device miniaturization integration. Herein, we report the preparation a pair optically active silver [Ag

Language: Английский

Citations

10

Gold Nanoclusters as High Resolution NIR-II Theranostic Agents DOI Creative Commons
Nancy Sharma,

Walaa Mohammad,

Xavier Le Guével

et al.

Chemical & Biomedical Imaging, Journal Year: 2024, Volume and Issue: 2(7), P. 462 - 480

Published: June 18, 2024

In the realm of nanomaterials, atomically precise quasi-molecular gold nanoclusters (AuNCs) play a prime role due to their unique, stable, and highly tunable optical properties. They are extensively structure-engineered for modulation surface electronic states toward long wavelength photoluminescence, particularly in NIR-II (1000 1700 nm) window. Contrast agents with emission can potentially transform imaging terms higher spatial resolution, deeper tissue penetration, reduced autofluorescence. These advantages allow real-time living organisms observing disease progression treatment response. this short review, we discuss origin rationally designed AuNCs application high resolution vasculatures hard soft structures identification pathological conditions such as stroke injury. Further, recent employment these rapidly growing field tumor theranostics is also summarized. Final remarks provided on scope improvement properties persisting challenges clinical translation.

Language: Английский

Citations

10

Catalytic activity of Pd6 nanoclusters for 4-nitrophenol reduction: strong effect of protecting ligand content DOI

Qian Guo,

Wanfu Zhang, Sam Zhang

et al.

Rare Metals, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 26, 2025

Language: Английский

Citations

2

Structurally altered size, composition, shape and interface-dependent optical properties of quantized nanomaterials DOI
Neng Qin,

Hui Han,

Guijian Guan

et al.

Nano Research, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 1, 2024

Language: Английский

Citations

9

Viewing inorganic metal nanoclusters through the lens of molecular chemistry DOI
Yuan Zhong, Zhennan Wu, Xue Bai

et al.

Materials Today, Journal Year: 2024, Volume and Issue: 76, P. 72 - 93

Published: May 25, 2024

Language: Английский

Citations

8

Filling the gaps in icosahedral superatomic metal clusters DOI Creative Commons

Wei‐Miao He,

Jiahua Hu,

Yujia Cui

et al.

National Science Review, Journal Year: 2024, Volume and Issue: 11(7)

Published: May 28, 2024

ABSTRACT Chemically modified superatoms have emerged as promising candidates in the new periodic table, which Au13 and its doped MnAu13−n been widely studied. However, their important counterpart, Ag13 artificial element, has not yet synthesized. In this work, we report synthesis of nanoclusters using strong chelating ability rigid ligands, that fills gaps icosahedral superatomic metal clusters. After further doping template with different degrees Au atoms, gained insight into evolution optical properties. Theoretical calculations show kernel can modulate transition excited-state electronic structure, electron transfer process changes from local excitation (LE) to charge (CT) LE. This study only enriches families superatoms, but also contributes understanding states

Language: Английский

Citations

8