Mechanical Strain Sensing in a SIS-Type Elastomer with Single Site Strain Probes Based on Carbazole
Four fluorescent strain probes with one or two carbazole units placed in the middle of an elastomeric triblock of polystyrene−polyisoprene−polystyrene (SIS) have been prepared and their fluorescence behaviors investigated under strain. The probes were dissolved in commercial SIS type rubbers at low...
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| Veröffentlicht in: | Macromolecules 2003-03, Vol.36 (5), p.1701-1705 |
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| container_title | Macromolecules |
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| creator | Spanggaard, Holger Jørgensen, Mikkel Almdal, Kristoffer |
| description | Four fluorescent strain probes with one or two carbazole units placed in the middle of an elastomeric triblock of polystyrene−polyisoprene−polystyrene (SIS) have been prepared and their fluorescence behaviors investigated under strain. The probes were dissolved in commercial SIS type rubbers at low levels of 0.1 wt %. Films cast from this blend were subjected to tensile elongation while the fluorescence spectra were obtained. A rather large change from ca. 0.7 to 1.1 in the relative intensity at two wavelengths (I 350/I 370) was observed on elongations up to 400%. The spectroscopic change is strongest for small strain levels around 0−200% and leveled out above 300−400%. This is attributed to changes in the intensities of the vibronic bands of the substituted carbazole units rather than changes in molecular overlap of carbazole dimers. |
| doi_str_mv | 10.1021/ma0256791 |
| format | Article |
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The probes were dissolved in commercial SIS type rubbers at low levels of 0.1 wt %. Films cast from this blend were subjected to tensile elongation while the fluorescence spectra were obtained. A rather large change from ca. 0.7 to 1.1 in the relative intensity at two wavelengths (I 350/I 370) was observed on elongations up to 400%. The spectroscopic change is strongest for small strain levels around 0−200% and leveled out above 300−400%. 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The probes were dissolved in commercial SIS type rubbers at low levels of 0.1 wt %. Films cast from this blend were subjected to tensile elongation while the fluorescence spectra were obtained. A rather large change from ca. 0.7 to 1.1 in the relative intensity at two wavelengths (I 350/I 370) was observed on elongations up to 400%. The spectroscopic change is strongest for small strain levels around 0−200% and leveled out above 300−400%. This is attributed to changes in the intensities of the vibronic bands of the substituted carbazole units rather than changes in molecular overlap of carbazole dimers.</description><subject>Applied sciences</subject><subject>Exact sciences and technology</subject><subject>Mechanical properties</subject><subject>Organic polymers</subject><subject>Physicochemistry of polymers</subject><subject>Properties and characterization</subject><issn>0024-9297</issn><issn>1520-5835</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2003</creationdate><recordtype>article</recordtype><recordid>eNptkDFPwzAQhS0EEqUw8A-8MDAELnbsxCOtSlupiKIUic26OA5NSZPKDoLy60lVKAvTO-m-9073CLkM4SYEFt6uEZiQsQqPSC8UDAKRcHFMegAsChRT8Sk5834FEIYi4j1iHqxZYl0arGjaOixrmtral_Ur7Uak6TQNFtuNpaMKfdusraMfZbukaUdUtpPW_vrmrsmspwP0NqdNTYfoMvxqKntOTgqsvL340T55vh8thpNg9jieDu9mAXIm2sBkuc0lYMQTWUDO8ggEcJVxk7EiYSqyIlaFiCFjuUwKNHmkuDRJDknGlGW8T673ucY13jtb6I0r1-i2OgS9a0cf2unYqz27Qd_9XjisTen_DJGUoGCXGey50rf287BH96ZlzGOhF_NUq4EaDycvoJ_-ctF4vWreXd19_M_9b0Xdfn4</recordid><startdate>20030311</startdate><enddate>20030311</enddate><creator>Spanggaard, Holger</creator><creator>Jørgensen, Mikkel</creator><creator>Almdal, Kristoffer</creator><general>American Chemical Society</general><scope>BSCLL</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20030311</creationdate><title>Mechanical Strain Sensing in a SIS-Type Elastomer with Single Site Strain Probes Based on Carbazole</title><author>Spanggaard, Holger ; Jørgensen, Mikkel ; Almdal, Kristoffer</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a325t-cbded60a4386f0d2d405039b3cb2f8294e579f570b2d68facd4936c8d08b29e23</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2003</creationdate><topic>Applied sciences</topic><topic>Exact sciences and technology</topic><topic>Mechanical properties</topic><topic>Organic polymers</topic><topic>Physicochemistry of polymers</topic><topic>Properties and characterization</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Spanggaard, Holger</creatorcontrib><creatorcontrib>Jørgensen, Mikkel</creatorcontrib><creatorcontrib>Almdal, Kristoffer</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><jtitle>Macromolecules</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Spanggaard, Holger</au><au>Jørgensen, Mikkel</au><au>Almdal, Kristoffer</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Mechanical Strain Sensing in a SIS-Type Elastomer with Single Site Strain Probes Based on Carbazole</atitle><jtitle>Macromolecules</jtitle><addtitle>Macromolecules</addtitle><date>2003-03-11</date><risdate>2003</risdate><volume>36</volume><issue>5</issue><spage>1701</spage><epage>1705</epage><pages>1701-1705</pages><issn>0024-9297</issn><eissn>1520-5835</eissn><coden>MAMOBX</coden><abstract>Four fluorescent strain probes with one or two carbazole units placed in the middle of an elastomeric triblock of polystyrene−polyisoprene−polystyrene (SIS) have been prepared and their fluorescence behaviors investigated under strain. 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| source | American Chemical Society Journals |
| subjects | Applied sciences Exact sciences and technology Mechanical properties Organic polymers Physicochemistry of polymers Properties and characterization |
| title | Mechanical Strain Sensing in a SIS-Type Elastomer with Single Site Strain Probes Based on Carbazole |
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