Synthesis and electronic spectra of substituted oligo(phenylenevinylene)s

Systematic Study of the Effects of Naphthalene and Anthracene Substitution on the Properties of PPV Derivative Conjugated Systems

“…21 All spectra and the melting point were as reported. 22 The bromomethylation of 6 using a method similar to that reported 23,24 carried out in acid-washed glassware using paraformaldehyde and KBr in acetic acid produced di-noctyloxy-1,4-bis(bromomethyl)benzene (7) in 73% yield. The Arbuzov reaction yielded 2,5-di-n-octyloxy-1,4-xylenediethylphosphonate ester (8) in a 71% yield.…”

Systematic Study of the Effects of Naphthalene and Anthracene Substitution on the Properties of PPV Derivative Conjugated Systems

“…21 All spectra and the melting point were as reported. 22 The bromomethylation of 6 using a method similar to that reported 23,24 carried out in acid-washed glassware using paraformaldehyde and KBr in acetic acid produced di-noctyloxy-1,4-bis(bromomethyl)benzene (7) in 73% yield. The Arbuzov reaction yielded 2,5-di-n-octyloxy-1,4-xylenediethylphosphonate ester (8) in a 71% yield.…”

Acidochromism of stilbenoid chromophores with a p‐aminoaniline centre

“…20 Whereas phenylenevinylene chromophores are fairly stable towards light or acid, UV-irradiation of solutions with traces of acids initiated a fast and irreversible decomposition of these materials. 21 Chromophores with basic sites like 12-17 show a much higher photostability, even in very acidic solution. Protonation was studied by UV-Vis and fluorescence spectroscopy of the OPVs dissolved in dichloromethane containing 10 À6 -1 molar concentrations of TFA.…”

Defined‐length Carbon‐rich Conjugated Oligomers

“…OPVs with 2,5-dioctyloxy substitution on a central ring as well as the analogous 2-(2-ethylhexyloxy)-5-methoxy systems [56][57][58][59] were used in many physicochemical studies. Moreover, OPVs with a selective substitution at the center and at the terminal rings have to be quoted here [46,48,54,[60][61][62][63][64][65].…”

Systematic Study of the Effects of Naphthalene and Anthracene Substitution on the Properties of PPV Derivative Conjugated Systems

“…21 All spectra and the melting point were as reported. 22 The bromomethylation of 6 using a method similar to that reported 23,24 carried out in acid-washed glassware using paraformaldehyde and KBr in acetic acid produced di-noctyloxy-1,4-bis(bromomethyl)benzene (7) in 73% yield. The Arbuzov reaction yielded 2,5-di-n-octyloxy-1,4-xylenediethylphosphonate ester (8) in a 71% yield.…”

Acidochromism of stilbenoid chromophores with a p‐aminoaniline centre

“…20 Whereas phenylenevinylene chromophores are fairly stable towards light or acid, UV-irradiation of solutions with traces of acids initiated a fast and irreversible decomposition of these materials. 21 Chromophores with basic sites like 12-17 show a much higher photostability, even in very acidic solution. Protonation was studied by UV-Vis and fluorescence spectroscopy of the OPVs dissolved in dichloromethane containing 10 À6 -1 molar concentrations of TFA.…”

Defined‐length Carbon‐rich Conjugated Oligomers

“…OPVs with 2,5-dioctyloxy substitution on a central ring as well as the analogous 2-(2-ethylhexyloxy)-5-methoxy systems [56][57][58][59] were used in many physicochemical studies. Moreover, OPVs with a selective substitution at the center and at the terminal rings have to be quoted here [46,48,54,[60][61][62][63][64][65].…”

Systematic Study of the Effects of Naphthalene and Anthracene Substitution on the Properties of PPV Derivative Conjugated Systems

“…21 All spectra and the melting point were as reported. 22 The bromomethylation of 6 using a method similar to that reported 23,24 carried out in acid-washed glassware using paraformaldehyde and KBr in acetic acid produced di-noctyloxy-1,4-bis(bromomethyl)benzene (7) in 73% yield. The Arbuzov reaction yielded 2,5-di-n-octyloxy-1,4-xylenediethylphosphonate ester (8) in a 71% yield.…”

Acidochromism of stilbenoid chromophores with a p‐aminoaniline centre

“…20 Whereas phenylenevinylene chromophores are fairly stable towards light or acid, UV-irradiation of solutions with traces of acids initiated a fast and irreversible decomposition of these materials. 21 Chromophores with basic sites like 12-17 show a much higher photostability, even in very acidic solution. Protonation was studied by UV-Vis and fluorescence spectroscopy of the OPVs dissolved in dichloromethane containing 10 À6 -1 molar concentrations of TFA.…”

Defined‐length Carbon‐rich Conjugated Oligomers

“…OPVs with 2,5-dioctyloxy substitution on a central ring as well as the analogous 2-(2-ethylhexyloxy)-5-methoxy systems [56][57][58][59] were used in many physicochemical studies. Moreover, OPVs with a selective substitution at the center and at the terminal rings have to be quoted here [46,48,54,[60][61][62][63][64][65].…”