Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Sandwich type porphyrin complex and low-light upconversion system prepared from same

A porphyrin complex and sandwich-type technology, which is applied in the field of triplet annihilation upconversion, can solve the problems of reducing upconversion efficiency, shortening excited state lifetime, reducing photosensitization, etc., so as to improve utilization rate and high upconversion efficiency , suitable for industrial production

Inactive Publication Date: 2016-04-20
SUZHOU UNIV OF SCI & TECH
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the sensitizers used in the above-mentioned upconversion systems are all single-layer metalloporphyrins, due to their inherent macrocyclic conjugated structure, intermolecular aggregation inevitably occurs, which greatly shortens the lifetime of excited states (such as triplet states). , reducing the photosensitization effect, thereby reducing the up-conversion efficiency

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Sandwich type porphyrin complex and low-light upconversion system prepared from same
  • Sandwich type porphyrin complex and low-light upconversion system prepared from same
  • Sandwich type porphyrin complex and low-light upconversion system prepared from same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 4

[0047] Embodiment one sandwich type porphyrin platinum complex (Pt(MeTPP) 2 ) preparation

[0048] Weigh 0.168 mg of tetramethylphenylporphyrin and put it into a three-necked bottle filled with 30 ml of benzonitrile (solvent), and heat it under stirring until it is completely dissolved. Then 0.03 g of potassium chloroplatinate was weighed and added to a three-necked flask, and heated to reflux temperature under the protection of nitrogen. After 24 hours of reaction, the reaction solution turned red and black. Point plate tracking is informed that there is a new product generation and no longer changes. The reaction was stopped, and the solvent benzonitrile was distilled off under reduced pressure, separated by column chromatography, and the mobile phase was CHCl 3 :Hexane=5:1. Purified to obtain a purple-red metallic luster solid (Pt(MeTPP) 2 ) 0.1 g, yield ~50%.

[0049] attached figure 1 It is the HPLC mass spectrogram of the above-mentioned sandwich-type porphyrin pla...

Embodiment 5

[0053] Embodiment two sandwich type porphyrin palladium complexes (Pd(MeTPP) 2 ) preparation

[0054] Weigh 0.168 g of tetramethylphenylporphyrin and 30 ml of benzonitrile into a three-necked flask, and heat with stirring until they are completely dissolved. Then 0.02 g of palladium acetylacetonate was weighed and added into a three-necked flask, and heated to reflux temperature under nitrogen protection, and the system turned red-black after 24 hours of reaction. Point board tracking is learned: palladium acetylacetonate reacts completely and generates new product. The reaction was stopped, and the solvent benzonitrile was distilled off under reduced pressure, separated by column chromatography, and the mobile phase was CHCl 3 :Hexane=5:1. Purified to obtain a red metallic luster solid (Pd(MeTPP) 2 ) 0.07g, ~40% yield.

[0055] attached Figure 5 It is the high-performance liquid mass spectrogram of the above-mentioned sandwich-type porphyrin palladium complex, and the ...

Embodiment 3

[0059] Example 3 Pt(MeTPP) 2 / DPA two-component system preparation and up-conversion test

[0060] Take Pt(MeTPP) 2 As a triplet sensitizer, 9,10-diphenylanthracene (DPA) was used as a luminescent agent to prepare an upconversion solution, in which Pt(MeTPP) 2 The concentration is fixed at 8×10 -6 mol / L, DPA concentrations were 0, 2.4×10 -4 , 4.8×10 -4 , 7.2×10 -4 , 9.6×10 -4 , 1.2×10 -3 , 1.44×10 -3 , 1.68×10 -3 , 1.92×10 -3 , 2.16×10 -3 , 2.4×10 -3 mol / L, mixed and dissolved in spectral grade DMF. Put the mixed solution in a quartz cuvette with 1cm optical path, after degassing pretreatment, under the excitation of green laser (532nm), test the two-component system DPA / Pt(MeTPP) 2 The upconverted spectrum of . And by changing the power density of the excitation light source to 11, 21, 30, 41, 51, 59, 70, 78mW / cm 2 , to measure the relationship between the power density of the incident light source and the upconversion intensity of the two-component system.

...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Power densityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a sandwich type porphyrin complex and a low-light upconversion system prepared from the same. Porphyrin conjugate large rings are introduced to the portions above and below a center metal ion respectively, and the novel sandwich type porphyrin complex is prepared. The strong interaction of metal and a porphyrin ligand is reduced through longitudinal complexing (namely, longitudinal bonding of metal and the ligand), the triplet state service life is prolonged, for example, the triplet state service life of a porphyrin complex of a single-layer structure is 8.62 ms, the triplet state service life of the sandwich type porphyrin complex is prolonged to 12.60 ms, triplet state-triplet state energy transfer between a sensitizing agent and an illuminating agent is facilitated, and finally triplet state annihilation upconversion efficiency is improved. Under the same condition, the upconversion efficiency of the porphyrin complex of a sandwich structure is improved by almost 1.4 times than the porphyrin complex of the single-layer structure.

Description

technical field [0001] The invention belongs to the field of triplet annihilation upconversion, and specifically relates to a sandwich porphyrin complex and its application as a sensitizer material in a triplet annihilation upconversion two-component system. Background technique [0002] Based on triplet-triplet annihilation upconversion (TTA-UC), long-wavelength absorption and short-wavelength emission can be realized to realize frequency upconversion under weak light excitation. It is usually necessary to mix the sensitizer and the luminescent agent together to form a two-component system, which is generated based on the intermolecular interaction between the triplet sensitizer and the triplet luminescent agent. Due to the low power density of the excitation light required (usually mW / cm 2 order of magnitude light intensity density excitation), which makes sunlight (power density ~100mW / cm 2 ) can be used as an excitation light source for TTA upconversion. Therefore, TT...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C07D487/22C09K11/06
CPCC07D487/22C09K11/06C09K2211/1029C09K2211/185
Inventor 王筱梅杨佳炜朱赛江叶常青梁作芹
Owner SUZHOU UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com