Document:

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                                                                     Exhibit 4.5

                                   AMENDMENT

                                       TO

                                RIGHTS AGREEMENT

     THIS AMENDMENT TO RIGHTS AGREEMENT (this "Amendment") is made this 1st day
of August, 2001 by Nanophase Technologies Corporation (the "Company") and
LaSalle National Bank, as Rights Agent (the "Rights Agent") under that certain
Rights Agreement dated October 28, 1998 (the "Rights Agreement") between the
Company and the Rights Agent.  This Amendment only amends certain portions of
the Rights Agreement and is effective as of 12:00 p.m. (Eastern Time), August 1,
2001.  All provisions of the Rights Agreement which are not amended by this
Amendment shall remain in full force and effect.

     1.  Section 1(a) of the Rights Agreement is hereby amended by deleting the
word "15%" in each place that it appears in such section and replacing it with
the word "20%".  In addition, any corresponding reference to a term defined in
such Section 1(a) shall be similarly amended.  It is the intent of the Company
and the Rights Agent that the 15% ownership threshold referenced in such Section
1(a) be increased to 20%.  Accordingly, any provision of the Rights Agreement
inconsistent with such purpose is hereby also amended.

     2.  Except as specifically set forth herein, all other terms and conditions
as set forth in the Rights Agreement shall remain in full force and effect, and
are not otherwise amended, altered, modified, or revised.

     3.  This document may be executed in one or more counterparts, each of
which so executed and delivered shall be deemed an original, but all of which
taken together shall constitute one and the same instrument.

     IN WITNESS WHEREOF, the undersigned have executed this Amendment as of the
day and year first above written.

Nanophase Technologies Corporation        LaSalle National Association as Rights
                                          Agent

By:   /s/ Jess Jankowski                  By:    /s/ Gregory Malatia
     -----------------------------              --------------------------------
      Jess Jankowski, Secretary           Name:  Gregory Malatia
                                           Its:  First Vice President<PAGE>

Exhibit No. 10(i) - Amendment dated May 16, 2001 to the MAF Bancorp, Inc. Stock
                  Option Gain Deferral Plan Trust Agreement.
<PAGE>

                                FIRST AMENDMENT
                                    OF THE
                                TRUST UNDER THE
                               MAF BANCORP, INC.
                        STOCK OPTION GAIN DEFERRAL PLAN

     THIS FIRST AMENDMENT of the Trust under the MAF Bancorp, Inc. Stock Option
Gain Deferral Plan is made as of the 16th day of May, 2001, by and between MAF
Bancorp, Inc. (the "Company") and LaSalle Bank, N.A. ("Trustee").

     WHEREAS, the Company has adopted a deferred compensation plan known as the
MAF Bancorp, Inc. Stock Option Gain Deferral Plan ("Plan"); and

     WHEREAS, the Company has adopted a Trust Agreement under the Plan
(hereinafter called "Trust"); and

     WHEREAS, the Company and Trustee desire to amend the Trust in response to
Internal Revenue Service Notice 2000-56 relating to treatment of certain assets
held in the Trust;

     NOW, THEREFORE, the parties do hereby amend the Trust as follows:

     1.   Section 1.5 is amended to read as follows:

          "1.5 The principal of the Trust, and any earnings thereon shall be
     held separate and apart from other funds of the Company and shall be used
     exclusively for the uses and purposes of the Plan participants and general
     creditors as herein set forth. Plan participants and their beneficiaries
     shall have no preferred claim on, or any beneficial ownership interest in,
     any assets of the Trust. Any rights created under the Plan and this Trust
     Agreement shall be mere unsecured contractual rights of Plan participants
     and their beneficiaries against the Company. Any assets held by the Trust
     will be subject to the claims of the Company's general creditors under
     federal and state law in the event of Insolvency, as defined in Section 3.1
     herein, including, but not limited to, any assets, including Common Stock,
     contributed by the Company for the benefit of any Plan participant who is
     an employee of a subsidiary of the Company which may also be subject to
     claims of the creditors of such subsidiary."

     2.   A new Section 1.7 is added to read as follows:

          "1.7 Participating Subsidiaries. Notwithstanding anything in this
     Trust Agreement to the contrary, to the extent the Trust benefits Plan
     participants who are employees of any of the Company's subsidiaries, any
     assets, including

                                       2
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     Common Stock, contributed by the Company for the benefit of such
     participants, as well as any assets contributed by any such subsidiary,
     shall be subject to the claims of the general creditors of such subsidiary.
     With respect to assets contributed by any subsidiary, the subsidiary shall
     be deemed to be the grantor hereunder and, with respect to such assets,
     references in this Trust Agreement to the Company shall be deemed to be
     references to such subsidiary. Further, with respect to assets contributed
     by the Company for the benefit of such participants, for purposes of
     Article III and claims of creditors, references in Article III to the
     Company shall also be deemed to be references to such subsidiaries."

     3.   Section 3.2(c) is amended to read:

          "(c) If, pursuant to paragraph (a) hereof, the Trustee receives notice
     from the Company of the Company's Insolvency or the Accounting Firm
     determines that the Company is Insolvent, the Trustee shall discontinue
     payments to Plan participants or their beneficiaries and shall hold the
     assets of the Trust for the benefit of the Company's general creditors,
     including any assets contributed by the Company for the benefit of Plan
     participants who are employees of a Company subsidiary, although such
     assets (including Common Stock) may also be subject to the claims of the
     creditors of such subsidiary. Nothing in this Trust Agreement shall in any
     way diminish any rights of Plan participants or their beneficiaries to
     pursue their rights as general creditors of the Company with respect to
     benefits due under the Plan or otherwise."

     4.   Sections 12.2 and 12.3 are amended to read as follows:

          "12.2  The Trust shall not terminate until the date on which Plan
     participants and their beneficiaries are no longer entitled to benefits
     pursuant to the terms of the Plan. Upon termination of the Trust, any
     assets remaining in the Trust shall be returned to the Company, including
     any assets contributed to the Trust by the Company for the benefit of Plan
     participants who are employees of a Company subsidiary, although such
     assets (including Common Stock) may also be subject to the claims of
     creditors of a subsidiary.

          12.3  Upon written approval of participants or beneficiaries entitled
     to payment of benefits pursuant to the terms of the Plan, the Company may
     terminate this Trust prior to the time all benefit payments under the Plan
     have been made. All assets in the Trust at termination shall be returned to
     the Company, including any assets contributed to the Trust by the Company
     for the benefit of Plan participants who are employees of a Company
     subsidiary, although such assets (including Common Stock) may also be
     subject to the claims of creditors of a subsidiary."

     5.   The effective date of this First Amendment shall be May 16, 2001.

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<PAGE>

     IN WITNESS WHEREOF, this First Amendment of Trust Agreement has been duly
executed by the duly authorized officers of the parties hereto, effective as of
the day and year first above written.

ATTEST/WITNESS:                              MAF BANCORP, INC.

/s/  Michael J. Janssen                      By:  /s/  Allen Koranda
----------------------------                    ---------------------------

Name: Michael J. Janssen                     Name: Allen Koranda
     -----------------------                      -------------------------

Title: Senior Vice President                 Title: Chief Executive Officer
      ----------------------                       ------------------------

                                             Date: 5/16/01
                                                  -------------------------

ATTEST/WITNESS:                              LASALLE BANK, N.A., TRUSTEE

/s/  Linda U. Porcher                        By:  /s/  William R. Kursar
----------------------------                    ---------------------------

Name: Linda U. Porcher                       Name: William R. Kursar
     -----------------------                      -------------------------

Title: Vice President                        Title: Senior Vice President
      ----------------------                       ------------------------

                                             Date: May 16, 2001
                                                  -------------------------

                                       4<PAGE>

Exhibit No. 10(ii) - Amendment dated May 16, 2001 to the Mid America Bank, fsb
                     Deferred Compensation Trust Agreement.

<PAGE>

                                   AMENDMENT
                                    OF THE
               MID AMERICA FEDERAL SAVINGS AND LOAN ASSOCIATION
                          DEFERRED COMPENSATION TRUST

     THIS AMENDMENT of the MID AMERICA FEDERAL SAVINGS AND LOAN ASSOCIATION
DEFERRED COMPENSATION TRUST is made as of the 16th day of May, 2001, by and
between Mid America Bank, fsb (f/k/a Mid America Federal Savings and Loan
Association) (the "Association") and American National Bank and Trust Company
("Trustee").

     WHEREAS, the Association has adopted deferred compensation plans for the
benefit of certain employees and directors  (each a "Plan"); and

     WHEREAS, the Association has adopted a Trust Agreement under the Plan
(hereinafter called "Trust"); and

     WHEREAS, the Association and Trustee desire to amend the Trust in response
to Internal Revenue Service Notice 2000-56 relating to treatment of certain
assets held in the Trust;

     NOW, THEREFORE, pursuant to the authority granted under Section 7.01 of the
Trust, the Association does hereby amend the Trust as follows:

     1.   Article IV is amended by adding a new Section 4.01A to read as
follows:

          "4.01A Contributions by MAF Bancorp, Inc. Notwithstanding anything in
     this Trust Agreement to the contrary, any assets (including MAF common
     stock) contributed or deemed contributed by MAF Bancorp, Inc., the parent
     holding company of the Association ("MAF"), for the benefit of
     Participants, shall be subject to the claims of the general creditors of
     MAF as well as the general creditors of the Association. With respect to
     assets contributed by MAF, MAF shall be deemed to be the grantor hereunder
     and references in this Trust Agreement to the Association shall, with
     respect to such assets, be deemed to be references to MAF. Further, for
     purposes of Article V and claims of creditors, with respect to such assets,
     including MAF common stock, references in Article V to the Association
     shall also be deemed references to MAF."

     2.   Article V is amended by adding a new Section 5.03 to read as follows:

          "5.03 Insolvency of MAF. If, pursuant to Section 5.01 and 5.02 hereof
     (each as modified by Section 4.01A), the Trustee receives notice of the
     Insolvency of MAF or determines that MAF is Insolvent, the Trustee shall
     discontinue payments to Participants or their beneficiaries and shall hold
     the

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<PAGE>

     assets of the Trust (including MAF common stock) which have been
     contributed or have been deemed to have been contributed by MAF for the
     benefit of MAF's general creditors, although such assets (including MAF
     common stock) may also be subject to the claims of the creditors of the
     Association. Nothing in this Trust Agreement shall in any way diminish any
     rights of Participants or their beneficiaries to pursue their rights as
     general creditors of the Association or MAF with respect to benefits due
     under the Plan or otherwise."

     3.  All references in the Trust to Mid America Federal Savings and Loan
Association shall be amended to be references to "Mid America Bank, fsb".

     4.  The effective date of this First Amendment shall be May 16, 2001.

     IN WITNESS WHEREOF, this Amendment of Trust Agreement has been duly
executed by the duly authorized officers of the Association hereto, effective as
of the day and year first above written.

ATTEST/WITNESS:                           MID AMERICA BANK, fsb

/s/  Michael J. Janssen                   By: /s/  Allen Koranda
----------------------------                 -----------------------------

Name: Michael J. Janssen                  Name: Allen Koranda
     -----------------------                   ---------------------------

Title: Senior Vice President              Title: Chief Executive Officer
      ----------------------                    --------------------------

                                          Date:  5/16/01
                                               ---------------------------
Acknowledged and Received:

AMERICAN NATIONAL BANK AND
TRUST COMPANY, TRUSTEE

By: /s/  Stephen C. Lewis
   -----------------------------

Name: Stephen C. Lewis
     ---------------------------

Title: First Vice President
      --------------------------

Date:  8/2/01
     ---------------------------

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