2502 Vol 33 PANI S D-CSA 1R L-CSA Alfa Aesar ITO 25 ~ 35 Ω /cm 2 Millipore CHI630B ITO Pt SCE Hitachi S-4800 Philips FEI

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1 Vol 33 No CHEMICAL JOURNAL OF CHINESE UNIVERSITIES 2501 ~ CSA PANI SEM TEM - UV-Vis CD PANI ζ PANI PANI PANI PANI / O646 A doi /cjcu PANI 1 Martin PANI 5 AAO PANI 6 PANI PANI Kaner 7 PANI PANI PANI PANI PANI PANI Yang 11 PANI Li 12 CSA PANI Yan 13 SEM CSA PANI PANI 14 ~ 18 Li 14 CSA PANI PANI PANI / PANI 19 PANI CSA PANI J BS006 jzzhou@ xmu edu cn

2 2502 Vol 33 PANI S D-CSA 1R L-CSA Alfa Aesar ITO 25 ~ 35 Ω /cm 2 Millipore CHI630B ITO Pt SCE Hitachi S-4800 Philips FEI Technai 30 Varian Cary JASCO Corporation J-810 spectropolarimeter CD Brookhaven Zeta CSA PANI 1 ml 0 1 mol /L ANI + 1 mol /L D-CSA 0 2 mol /L ANI + 1 mol /L D-CSA 0 5 mol /L ANI + 1 mol /L D-CSA 1 h 1 ml 20 h D-CSA PANI SEM PANI CSA 0 1 mol /L ANI + 1 mol /L D- CSA 0 2 mol /L ANI + 1 mol /L D-CSA 0 5 mol /L ANI + 1 mol /L D-CSA 0 1 mol /L ANI + 1 mol /L L- CSA ITO V 300 s CSA PANI D-CSA PANI PANI D-PANI L-CSA PANI PANI L-PANI PANI ~ 0 9 V 100 mv /s V 1 6 mc /cm 2 2 h PANI D-PANI 0 1 mol /L HCl 0 1 mol /L - UV-Vis CD 0 1 mol /L HCl V vs SCE PANI 1 D-CSA L-CSA 1 mol /L 0 1 ~ 0 5 mol /L PANI SEM PANI PANI 50 ~ 100 nm SEM 1 B D F H PANI CSA PANI 19 D-CSA PANI L-CSA CSA PANI CSA SO 3 H C 10 H 15 O CSA CSA - /HAn + CSA CSA - /HAn + CSA - CSA / An CSA / An < 1 CSA / An 13 > 5 20 CSA / An > 20 PANI 13 CSA PANI PANI

No 11 2503 Fig 1 SEM images A C E G and high resolution of images B D F H of D-PANI A F and L-PANI G H A B 0 1 mol /L ANI + 1 mol /L D-CSA solution C D 0 2 mol /L

/ An 1 CSA 1 mol /L CSA PANI CSA 2 mol /L 2 Fig 2 SEM images A C E G and high resolution of images B D F H of potentiostatic electropolymerization D-PANI A F and

mol /L D-CSA solution G H 0 1 mol /L ANI + 2 mol /L L-CSA solution The potential was set at 0 9 V vs SCE CSA PANI 3 CSA / An 3 A 3 B Fig 3 SEM images of D-PANI

3 No Fig 1 SEM images A C E G and high resolution of images B D F H of D-PANI A F and L-PANI G H A B 0 1 mol /L ANI + 1 mol /L D-CSA solution C D 0 2 mol /L ANI + 1 mol /L D-CSA solution E F 0 5 mol /L ANI + 1 mol /L D-CSA solution G H 0 1 mol /L ANI + 1 mol /L L-CSA solution The potential was set at 0 9 V vs SCE CSA CSA / An 1 CSA 1 mol /L CSA PANI CSA 2 mol /L 2 Fig 2 SEM images A C E G and high resolution of images B D F H of potentiostatic electropolymerization D-PANI A F and L-PANI G H A B 0 1 mol /L ANI + 2 mol /L D-CSA solution C D 0 2 mol /L ANI + 2 mol /L D-CSA solution E 0 05 mol /L ANI + 2 mol /L D-CSA solution F 0 5 mol /L ANI + 2 mol /L D-CSA solution G H 0 1 mol /L ANI + 2 mol /L L-CSA solution The potential was set at 0 9 V vs SCE CSA PANI 3 CSA / An 3 A 3 B Fig 3 SEM images of D-PANI nanofibers prepared from 0 1 mol /L ANI + 1 mol /L D-CSA solution A 0 2 mol / L ANI + 1 mol /L D-CSA solution B and 0 5 mol /L ANI + 1 mol /L D-CSA solution C with chemical method

2504 Vol 33 C 13 CSA PANI CSA / An CSA 1 1 2 mol /L CSA 0 1 mol /L ζ CSA 2 mol /L -CSA Table 1 Average diameter of micelles and ζ-potential of 1 mol /L CSA 2 different solutions ζ CSA - /HAn + CSA 2

4 2504 Vol 33 C 13 CSA PANI CSA / An CSA mol /L CSA 0 1 mol /L ζ CSA 2 mol /L -CSA Table 1 Average diameter of micelles and ζ-potential of 1 mol /L CSA 2 different solutions ζ CSA - /HAn + CSA 2 mol /L ζ PANI Solution Diameter / nm ζ potential / mv 0 1 mol /L aniline + 2 mol /L D-CSA mol /L D-CSA mol /L aniline + 1 mol /L D-CSA mol /L D-CSA CSA 1 mol /L ζ PANI 4 CSA 1 mol /L 0 75 V PANI > 0 75 V PANI V PANI V PANI Fig 4 Cyclic voltammograms of ITO electrode in 0 1 mol /L ANI + 1 mol /L D-CSA solution scan rate = 100 mv /s A and anodic current as a function of deposition time for PANI growth at 0 9 V B Fig 5 SEM images of electrodeposited D-PANI nanofibers from different solutions of 0 1 mol /L ANI + 1 mol /L D-CSA A1 A3 0 2 mol /L ANI + 1 mol /L D-CSA B1 B3 and 0 5 mol /L ANI + 1 mol /L D-CSA C1 C3 at different set potentials at 0 75 V A1 C V A2 C2 and 0 85 V A3 C3

No 11 2505 4 B CSA CSA - /HAn + CSA - /HAn + π- CSA PANI 2 2 PANI 6 0 1 ~ 1 mol /L CSA D-PANI L-PANI CD UV-Vis PANI Fig 6 CD A and UV-Vis B spectra of D-PANI dash dot line and L-PANI solid line

5 No B CSA CSA - /HAn + CSA - /HAn + π- CSA PANI 2 2 PANI ~ 1 mol /L CSA D-PANI L-PANI CD UV-Vis PANI Fig 6 CD A and UV-Vis B spectra of D-PANI dash dot line and L-PANI solid line prepared from 0 1 mol /L ANI + 1 mol /L D-CSA and 0 1 mol /L ANI + 1 mol /L L-CSA respectively PANI UV-Vis 340 nm π-π * nm PANI 6 A D-PANI L-PANI 300 nm D-CSA L-CSA 290 nm 7 D-PANI L-PANI PANI D-PANI 340 nm Cotton 460 nm Cotton 700 nm Cotton L-PANI 19 PANI mdeg Fig 7 CD spectra of D-CSA a and L-CSA b in aqueous solution 0 01 mol /L PANI CSA 12 TEM PANI 8 D-PANI L-PANI PANI CSA - PANI 12 PANI 13 Fig 8 TEM images of D-PANI A prepared from 0 1 mol /L ANI + 1 mol /L D-CSA solution and L-PANI B prepared from 0 1 mol /L ANI + 1 mol /L L-CSA solution

6 2506 Vol 33 PANI 9 1 mol /L D-CSA D-PANI CD D-PANI D-PANI 460 nm CD D-PANI 0 5 mol /L mol /L CSA PANI Fig 9 CD spectra of D-PANI prepared in 1 mol /L PANI D-CSA with different aniline concentrations a 0 5 mol /L b 0 1 mol /L c 0 2 mol /L PANI mol /L D-PANI UV-Vis CD PANI 0 1 mol /L 0 1 mol /L HCl PANI PANI UV-Vis CD 10 A UV-Vis D-PANI 0 1 mol /L Emeraldine base EB PANI nm 21 CD 10 B nm UV-Vis PANI PANI PANI CSA PANI D-PANI HCl D-PANI 10 Fig 10 UV-Vis A and CD B spectra of as-prepared D-PANI a dedoped D-PANI b by 0 1 mol /L ammonia and redoped D-PANI c by 0 1 mol /L HCl D-PANI prepared from 0 1 mol /L ANI + 1 mol /L D-CSA solution a Original b redoped c dedoped 11 D-PANI 0 1 mol /L HCl CD UV-Vis 11 A D-PANI D-PANI UV-Vis 11 B nm nm PANI CD 11 A nm CD nm nm UV-Vis 23 D-PANI UV-Vis 11 B π-π * 350 nm 450 nm PANI A D-PANI nm CD nm PANI 350 nm π-π *

7 No Fig 11 CD A and UV-Vis B spectra of different oxidized state D-PANI prepared from 0 1 mol /L ANI + 1 mol /L D-CSA solution a Mid-oxided b oxided c reduced 22 CD 23 PANI CD 3 PANI CSA 1 mol /L PANI CSA / PANI PANI PANI 1 Li D Huang J X Kaner R B Acc Chem Res J Parthasarathy R V Martin C R Nature J Liang W Martin C R J Am Chem Soc J WENG Shao-Huang ZHOU Jian-Zhang WEN Li QI Li CAI Cheng-Dong YAO Guang- Hua LIN Zhong-Hua Chem J Chinese Universities J QI Li ZHOU Jian-Zhang CAI Cheng-Dong YAO Guang-Hua LIN Zhong-Hua Chem J Chinese Universities J Wan M X Macromol Rapid Commun J Li D Kaner R B J Am Chem Soc J Yashima E Maeda K Macromolecules J Huang J Y Wei Z X Chen J C Sens Actuators B J Huang J X Egan V M Guo H L Yoon J Y Briseno A L Rauda I E Garrell R L Knobler C M Zhou F M Kaner R B Adv Mater J Yang Y S Wan M X J Mater Chem J Li W G Wang H L J Am Chem Soc J Yan Y Yu Z Huang Y W Yuan W X Wei Z X Adv Mater J Li W G Wang H L Adv Funct Mater J Majidi M R Kane-Maguire L A P Wallace G G Polymer J Norris I D Kane-Maguire L A P Wallace G G Macromolecules J Pornputtkul Y Kane-Maguire L A P Wallace G G Macromolecules J Zhang X T Song W H Polymer J Weng S H Lin Z H Chen L X Zhou J Z Electrochimica Acta J Zhang L J Wan M X Nanotechnology J Masters J G Ginder J M MacDiarmid A G Epstein A J J Chem Phys J Su S J Kuramoto N Macromolecules J

8 2508 Vol Su S J Kuramoto N Chem Mater J McCall R P Ginder J M Leng J M Ye H J Manohar S K Masters J G Asturias G E MacDiarmid A G Epstein A J Phys Rev B J ZHOU Jian-Zhang WENG Shao-Huang LIN Zhong-Hua Journal of Electrochemistry J Electrochemical Preparation of Chiral Polyaniline Nanofibers WENG Shao-Huang 2 ZHOU Jian-Zhang 1* LIN Zhong-Hua 1 LIN Xin-Hua 2 1 State Key Laboratory of Physical Chemistry of the Solid Surface Department of Chemistry College of Chemistry and Chemical Engineering Xiamen University Xiamen China 2 Department of Pharmaceutical Analysis Faculty of Pharmacy Fujian Medical University Fuzhou China Abstract Chiral polyaniline PANI nanofibers were synthesized via facilely potentiostatic electropolymerization method without template in the presence of 1S - + -camphor-10-sulfonic acid D-CSA or 1R - - -camphor-10-sulfonic acid L-CSA as the dopant The morphology and optical property of chiral PANI nanofibers were characterized with scanning electron microscopy SEM transmission electron microscopy TEM UV-Vis spectrum UV-Vis and circular dichroism CD Combined with the average diameter of micelles and zeta-potential of different deposition solutions the formation mechanism and the enhanced optical activity of the optical PANI nanofibers were studied The morphology of PANI nanofibers without the helical structure was consistent with the change of the concentration of aniline in the deposition solution when the concerntion of CSA was 1 mol /L Furthermore chiral PANI nanofibers induced by different chiral CSA exhibited mirror-imaged circular dichroism spectra with high ellipticity indicating the stereochemical selectivity of the molecular structure of PANI chain in the electrodeposited process The colors and optical activities of the chiral PANI nanofibers not only can be kept with the chemical dedoping /redoping treatment but also can reversibly varied with the different oxidized forms which were controlled via electrochemical route Keywords Stereochemical selectivity Electropolymerization Polyaniline PANI nanofiber Chiral Circular dichroism spectrum Ed S Z

12-1b T Q235B ML15 Ca OH Table 1 Chemical composition of specimens % C Si Mn S P Cr Ni Fe

12-1b T Q235B ML15 Ca OH Table 1 Chemical composition of specimens % C Si Mn S P Cr Ni Fe * - - 100084 Q235B ML15 Ca OH 2 DOI 10. 13204 /j. gyjz201508023 STUDY OF GALVANIC CORROSION SENSITIVITY BETWEEN ANY COUPLE OF STUD WELDMENT OR BEAM Lu Xinying Li Yang Li Yuanjin Department of Civil Engineering