Search

Your search keyword '"Sa, Rong-Jian"' showing total 13 results
Start Over Author "Sa, Rong-Jian"
13 results on '"Sa, Rong-Jian"'

4. Second-order nonlinear optical switching with a record-high contrast for a photochromic and thermochromic bistable crystal† †Electronic supplementary information (ESI) available: Crystallographic data, bond lengths and angles, and characterization of 1. CCDC 1519422. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c7sc01228d

Author

Xing, Xiu-Shuang, Sa, Rong-Jian, Li, Pei-Xin, Zhang, Ning-Ning, Zhou, Zhong-Yuan, Liu, Bin-Wen, Liu, Jie, Wang, Ming-Sheng, and Guo, Guo-Cong

Subjects
Chemistry
Abstract

The first bistable NLO crystalline compound with both photo- and heat-induced SHG-switching behavior shows a record-high photoinduced SHG-switching contrast., Nonlinear optical (NLO) switchable materials are important for photonic and optoelectronic technologies. One important issue for NLO photoswitching, the most studied physical switching approach, is how to improve the switching contrast of second harmonic generation (SHG) in crystals, because the known values are generally below 3 times. Thermoswitching, as another approach, has shown impressive high SHG-switching contrasts (4–∞ times), but the fast decay of thermally induced states demands constant heat sources to maintain specific SHG intensities. We have synthesized a photochromic and thermochromic bistable acentric compound, β-[(MQ)ZnCl3] (MQ+ = N-methyl-4,4′-bipyridinium), which represents the first crystalline compound with both photo- and heat-induced SHG-switching behavior and the first example of a thermoswitchable NLO crystal that can maintain its expected second-order NLO intensity without any heat source. The SHG-switching contrast can reach about 8 times after laser irradiation or 2 times after thermal annealing. The former value is the highest recorded for photoswitchable NLO crystals. This work also indicates that higher SHG-switching contrasts may be obtained through increasing electron-transfer efficiency, variation of permanent dipole moment, and self-absorption.

Published
2017

10. An Ultra‐Robust and Crystalline Redeemable Hydrogen‐Bonded Organic Framework for Synergistic Chemo‐Photodynamic Therapy.

Author

Sa, Rong‐Jian, Liu, Tian‐Fu, Cao, Rong, Yin, Qi, Zhao, Peng, Chen, Guang‐Cun, and Lü, Jian

Subjects
*LIGAND biosynthesis, *METHOXYCARBONYL compounds, *X-ray diffraction, *BENZOIC acid, *PHOTODYNAMIC therapy
Abstract

Abstract: The low structural stability of hydrogen‐bonded organic frameworks (HOFs) is a thorny issue retarding the development of HOFs. A rational design approach is now proposed for construction of a stable HOF. The resultant HOF (PFC‐1) exhibits high surface area of 2122 m2 g−1 and excellent chemical stability (intact in concentrated HCl for at least 117 days). A new method of acid‐assisted crystalline redemption is used to readily cure the thermal damage to PFC‐1. With periodic integration of photoactive pyrene in the robust framework, PFC‐1 can efficiently encapsulate Doxorubicin (Doxo) for synergistic chemo‐photodynamic therapy, showing comparable therapeutic efficacy with the commercial Doxo yet considerably lower cytotoxicity. This work demonstrates the notorious stability issue of HOFs can be properly addressed through rational design, paving a way to develop robust HOFs and offering promising application perspectives. [ABSTRACT FROM AUTHOR]

Published
2018
Full Text
View/download PDF

12. 2,4,6-Tri(4-pyridyl)-1,3,5-triazine: Photoinduced Charge Separation and Photochromism in the Crystalline State.

Author

Zhang NN, Han YF, Du MX, Sa RJ, Wang MS, and Guo GC

Abstract

2,4,6-Tri(4-pyridyl)-1,3,5-triazine (tpt) is a widely used ligand for functional coordination compounds. In this work, tpt has shown unprecedented photochromism in the crystalline state. Experimental and theoretical data has revealed that the photocoloration of tpt very likely originates from intramolecular charge separation and the formation of a triplet diradical product. This finding demonstrates a new simple, neutral photochromic molecule and endows the tpt molecule and related compounds with potential optical applications., (© 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.)

Published
2019
Full Text
View/download PDF

13. An Ultra-Robust and Crystalline Redeemable Hydrogen-Bonded Organic Framework for Synergistic Chemo-Photodynamic Therapy.

Author

Yin Q, Zhao P, Sa RJ, Chen GC, Lü J, Liu TF, and Cao R

Subjects
Adsorption, Antibiotics, Antineoplastic chemistry, Crystallization, Doxorubicin chemistry, Hydrogen Bonding, Microscopy, Electron, Scanning, Molecular Structure, Powder Diffraction, Proof of Concept Study, Thermodynamics, Organic Chemicals chemistry, Photochemotherapy
Abstract

The low structural stability of hydrogen-bonded organic frameworks (HOFs) is a thorny issue retarding the development of HOFs. A rational design approach is now proposed for construction of a stable HOF. The resultant HOF (PFC-1) exhibits high surface area of 2122 m 2  g -1 and excellent chemical stability (intact in concentrated HCl for at least 117 days). A new method of acid-assisted crystalline redemption is used to readily cure the thermal damage to PFC-1. With periodic integration of photoactive pyrene in the robust framework, PFC-1 can efficiently encapsulate Doxorubicin (Doxo) for synergistic chemo-photodynamic therapy, showing comparable therapeutic efficacy with the commercial Doxo yet considerably lower cytotoxicity. This work demonstrates the notorious stability issue of HOFs can be properly addressed through rational design, paving a way to develop robust HOFs and offering promising application perspectives., (© 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.)

Published
2018
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results