Femtosecond spectroscopy reveals huge differences in the photoisomerisation dynamics between azobenzenes linked to polymers and azobenzenes in solution

Literature Information

Publication Date 2014-04-25
DOI 10.1039/C4CP01196A
Impact Factor 3.676
Authors

Julia Bahrenburg, Falk Renth, Friedrich Temps, Felix Plamper, Walter Richtering


View Original

Abstract

Femtosecond fluorescence up-conversion spectroscopy of two azobenzenes covalently attached to the side chain or linked by covalent bonds at each end into the main chain of polybutylmethacrylate polymer colloids with different cross-linking ratios reveals dramatic differences in the excited-state dynamics compared to the monomer chromophores in solution due to strong mechanical forces in the complex micronetworks. For the azobenzene derivative DR1 in the polymer side chain, the measurements determined an increase of the mean excited-state lifetime after irradiation at λ = 475 nm to 〈τ〉 = 5.5 ps from 〈τ〉 = 0.5 ps for the monomer. For the cross-linked BAAB in the polymer main chain, an increase of 〈τ〉 was found of more than a factor-of-20. Moreover, with a lifetime of τ = 430 ps, ≈12% of the molecules in the tightly (1 : 10) cross-linked polymer were found to remain in the excited state about 100 times longer than observed for the monomer chromophore. These results are of high relevance for applications of photoswitchable polymer materials.

Related Literature

Efficient boron removal by using mesoporous matrices grafted with saccharides

Gertrudis Rodríguez-López, M. Dolores Marcos, Ramón Martínez-Máñez, Félix Sancenón, Juan Soto, Luis A. Villaescusa, Danile Beltrán, Pedro Amorós

2004-08-19 Communication

DOI: 10.1039/B406611A

Optical sensing of amine vapors with a series of tin compounds

Evonne A. Baldauff

2004-07-30 Communication

DOI: 10.1039/B406230B

Photochemical polymerization of thiophene derivatives in aqueous solution

Sergey A. Piletsky, Elena V. Piletska, Kal Karim, Frank Davis, Seamus P. J. Higson, Anthony P. F. Turner

2004-08-20 Communication

DOI: 10.1039/B408387C

Motion of methanol adsorbed in porous coordination polymer with paramagnetic metal ions

Satoshi Horike, Ryotaro Matsuda, Ryo Kitaura, Susumu Kitagawa, Takahiro Iijima, Kazunaka Endo, Yoshiki Kubota, Masaki Takata

2004-08-20 Communication

DOI: 10.1039/B406883A

Isolation and characterisation of the mixed-metal alkyl amide [(TMEDA)Na(μ-Bu)(μ-TMP)Mg(TMP)], an unexpected chelate-trapped intermediate in the formation of inverse crowns

Eva Hevia, Daniel J. Gallagher, Alan R. Kennedy, Robert E. Mulvey, Charles T. O'Hara, Christine Talmard

2004-09-23 Communication

DOI: 10.1039/B410293B

The first samarium(ii)-mediated aryl radical cyclisation onto an aromatic ring

Hiroaki Ohno, Hiroki Iwasaki, Toru Eguchi, Tetsuaki Tanaka

2004-08-23 Communication

DOI: 10.1039/B410457A

Role of pore curvature on the thermal stability of gold nanoparticles in mesoporous silica

Mangesh T. Bore, Hien N. Pham, Timothy L. Ward, Abhaya K. Datye

2004-10-04 Communication

DOI: 10.1039/B407575G

Supramolecular isomerism in spin crossover networks with aurophilic interactions

Ana Galet, M. Carmen Muñoz, Víctor Martínez, José Antonio Real

2004-09-07 Communication

DOI: 10.1039/B409974E

You might also like

Compound Q&A

What are the main uses of (3alpha,5alpha)-3-Hydroxypregnane-11,20-dione (CAS: 23930-19-0)?

(3alpha,5alpha)-3-Hydroxypregnane-11,20-dione is primarily used in the pharmaceu...

23930-19-0(3alpha,5alpha)-3-Hy...
Compound Q&A

What is the market or research trend for 4-Amino-6-chloro-2-pyridinecarboxylic acid (CAS: 546141-56-4)?

The market for 4-Amino-6-chloro-2-pyridinecarboxylic acid (CAS: 546141-56-4) is ...

546141-56-44-Amino-6-chloro-2-p...
Compound Q&A

Are there alternatives to (2-Benzoylethyl)trimethylammonium chloride (CAS: 24472-88-6) in synthesis?

Alternatives to (2-Benzoylethyl)trimethylammonium chloride (CAS: 24472-88-6) in ...

24472-88-6(2-Benzoylethyl)trim...
Compound Q&A

Is N-[4-Nitro-3-(trifluoromethyl)phenyl]acetamide (CAS: 393-12-4) safe?

N-[4-Nitro-3-(trifluoromethyl)phenyl]acetamide (CAS: 393-12-4) is generally safe...

393-12-4N-[4-Nitro-3-(triflu...
Compound Q&A

Are there alternatives to N,N'-Bis(3-aminopropyl)-1,3-propanediamine (CAS: 4605-14-5) in synthesis?

There are alternatives to N,N'-Bis(3-aminopropyl)-1,3-propanediamine (CAS: 4605-...

4605-14-5N,N'-Bis(3-aminoprop...
Compound Q&A

What precautions should be taken when handling Aluminium trihexadecanoate (CAS: 555-35-1)?

When handling Aluminium trihexadecanoate, it is important to use appropriate per...

555-35-1Aluminium trihexadec...
Compound Q&A

What is (1,1-Dioxido-3-oxo-1,2-benzothiazol-2(3H)-yl)acetic acid (CAS: 52188-11-1)?

(1,1-Dioxido-3-oxo-1,2-benzothiazol-2(3H)-yl)acetic acid is a chemical compound ...

52188-11-1(1,1-Dioxido-3-oxo-1...
Compound Q&A

Are there alternatives to 5,5-dimethyloxolan-2-one (CAS: 3123-97-5) in synthesis?

Several alternatives to 5,5-dimethyloxolan-2-one (CAS: 3123-97-5) can be used in...

3123-97-55,5-dimethyloxolan-2...

Source Journal

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
Articles per Year: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

Recommended Compounds

Recommended Suppliers

Disclaimer
This page provides academic journal information for reference and research purposes only. We are not affiliated with any journal publishers and do not handle publication submissions. For publication-related inquiries, please contact the respective journal publishers directly.
If you notice any inaccuracies in the information displayed, please contact us at support@chemtradehub.com. We will promptly review and address your concerns.