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首页> 外文期刊>Journal of Materials Chemistry, A. Materials for energy and sustainability >Glowing stereocomplex biopolymers are generating power: polylactide/ carbon quantum dot hybrid nanofibers with high piezoresponse and multicolor luminescence
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Glowing stereocomplex biopolymers are generating power: polylactide/ carbon quantum dot hybrid nanofibers with high piezoresponse and multicolor luminescence

机译：发光的立体络合生物聚合物是发电：具有高压电响应和多色发光的聚乳酸/碳量子点杂种纳米纤维

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摘要

We report the design and fabrication of novel biodegradable hybrid polymeric nanofibers with the combined advantages of high shear piezoelectricity, multicolor photoluminescence and simultaneously improved heat resistance. The multifunctional flexible nanofibers, with uniform diameters and smooth surfaces, were fabricated through the electrospinning of poly(d-lactide) (PDLA)/poly(l-lactic acid) (PLLA)/carbon quantum dots (CQDs) with dichloromethane and alcohol as the mixed spinning solvent. The electrospinning at a high voltage enhanced the orientation and formation of stereocomplexed polylactide crystals, and at the same time remarkably suppressed the growth of homocrystallites in the ternary composite nanofibers. With the amplitude and/or frequency increase of stimulated dynamic loads, the electrical outputs of the stereocomplex PDLA/PLLA/CQD nanofibers increased, and the maximum open-circuit voltage and short-circuit current output density achieved were 74.2 V cm(-3) and 4.9 A cm(-3), respectively. Also, the stereocomplexed nanofiber based nanogenerator, during continuous operation of electromechanical conversion, demonstrated good stability and durability as a power source to operate LEDs, and no electrical output decay was observed for more than 10000 consecutive working cycles. Moreover, the electrospun hybridized nanofibers emitted different fluorescence colors under laser excitation at different wavelengths. The as-developed ecologically friendly bionanofibers may diversify niche applications in future transient electronics and implantable medical devices as self-powered bio-sensors, bio-piezoelectric nanogenerators, and so on.
机译：我们报告了新型可生物降解的杂化聚合物纳米纤维的设计和制造，具有高剪切压电，多色光致发光和同时改善耐热性的组合优点。具有均匀直径和光滑表面的多功能柔性纳米纤维通过聚（D-丙交酯）（PDLA）/聚（L-乳酸）（PLLA）/碳量子点（CQDS）用二氯甲烷和醇作为所述混合纺丝溶剂。在高电压下的静电纺丝增强了立体交并聚物晶体的取向和形成，同时显着抑制了三元复合纳米纤维中的同种晶体的生长。随着刺激的动态载荷的幅度和/或频率增加，立体复合PDLA / PLLA / CQD纳米纤维的电输出增加，并且实现的最大开路电压和实现的短路电流输出密度为74.2Vcm（-3）分别为4.9厘米（-3）。此外，在机电转换的连续运行期间，基于立体复合的纳米纤维的纳米料，证明了作为操作LED的电源的良好稳定性和耐久性，并且没有观察到超过10000个连续工作循环的电输出衰减。此外，Electromun杂交的纳米纤维在不同波长下在激光激发下发出不同的荧光颜色。开发的生态友好友好的生物植物可以将未来的瞬态电子产品和可植入的医疗设备中的利基应用多样化为自给自足的生物传感器，生物压电纳米电器等。

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    Xu Yali; Jin Long; He Xuebing; Huang Xi; Xie Meilin; Wang Chuanfeng; Zhang Chaoliang; Yang Weiqing; Meng Fanbin; Lu Jun;

  • 作者单位

    Southwest Jiaotong Univ Sch Mat Sci &

    Engn Key Lab Adv Technol Mat Minist Educ Chengdu 610031 Sichuan Peoples R China;

    Southwest Jiaotong Univ Sch Mat Sci &

    Engn Key Lab Adv Technol Mat Minist Educ Chengdu 610031 Sichuan Peoples R China;

    Southwest Jiaotong Univ Sch Mat Sci &

    Engn Key Lab Adv Technol Mat Minist Educ Chengdu 610031 Sichuan Peoples R China;

    Southwest Jiaotong Univ Sch Mat Sci &

    Engn Key Lab Adv Technol Mat Minist Educ Chengdu 610031 Sichuan Peoples R China;

    Southwest Jiaotong Univ Sch Mat Sci &

    Engn Key Lab Adv Technol Mat Minist Educ Chengdu 610031 Sichuan Peoples R China;

    Southwest Jiaotong Univ Sch Mat Sci &

    Engn Key Lab Adv Technol Mat Minist Educ Chengdu 610031 Sichuan Peoples R China;

    Sichuan Univ West China Hosp Stomatol State Key Lab Oral Dis Chengdu 610041 Sichuan Peoples R China;

    Southwest Jiaotong Univ Sch Mat Sci &

    Engn Key Lab Adv Technol Mat Minist Educ Chengdu 610031 Sichuan Peoples R China;

    Southwest Jiaotong Univ Sch Mat Sci &

    Engn Key Lab Adv Technol Mat Minist Educ Chengdu 610031 Sichuan Peoples R China;

    Southwest Jiaotong Univ Sch Mat Sci &

    Engn Key Lab Adv Technol Mat Minist Educ Chengdu 610031 Sichuan Peoples R China;

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  • 正文语种 eng
  • 中图分类 工程材料学;
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